{"id":29763,"date":"2019-03-27T14:24:40","date_gmt":"2019-03-27T21:24:40","guid":{"rendered":"http:\/\/photoshopcafe.com\/?p=29763"},"modified":"2019-05-22T13:32:49","modified_gmt":"2019-05-22T20:32:49","slug":"blur-photo-background-photoshop-using-blur-masks-depth-maps","status":"publish","type":"post","link":"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/","title":{"rendered":"How to blur a photo background in Photoshop using blur masks and Depth Maps"},"content":{"rendered":"<p>This week I have made a really fun and useful tutorial that not only gives you great results, it will also teach you a little bit about channels. Don&#8217;t worry, they aren&#8217;t as scary as they sound. This Photoshop tutorial shows you how to blur the background of a photo to add a realistic depth of field by using Depth Maps, or blur masks as they are sometimes called. This method allows you to add a different amount of blur on different parts of the photo.<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/kHaJkhylarA?rel=0\" width=\"853\" height=\"480\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\">\ufeff<\/span><\/iframe><\/p>\n<p>The photo <a href=\"https:\/\/stock.adobe.com\/images\/lady-tourist-with-a-backpack-standing-on-top-of-the-mountain\/63665390?prev_url=detail\">used here<\/a><\/p>\n<h2><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29766\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_01.jpg\" alt=\"background blur in photoshop \" width=\"750\" height=\"505\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_01.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_01-600x404.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_01-300x202.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_01-100x67.jpg 100w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_01-120x80.jpg 120w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/h2>\n<h2>Creating a Depth Map Powered Background Blur in Photoshop<\/h2>\n<p>In this Photoshop tutorial, you will learn how to blur a background to simulate depth of filed from a nice expensive lens. You have heard the term bokeh, or depth of field or background blur. This all comes from a large opening in the lens that throws the background out of focus. Maybe you don&#8217;t have that lens, or couldn&#8217;t open the aperture because of too much light, or you used a drone, a GoPro or a phone. Or maybe you just want to have that control yourself in Photoshop. We will use masks to control where and how much of a blur will be applied to a photo. This allows you to create a very realistic depth of field effect that add depth as well as simplifies the composition of an image and makes it more pleasing.<\/p>\n<p>&nbsp;<\/p>\n<h4>Step 1. Select the subject (foreground)<\/h4>\n<p>Choose the Quick select tool.<\/p>\n<p>Choose select subject, or use the quick selection tool to select our woman.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29767\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_02.jpg\" alt=\"select and mask\" width=\"645\" height=\"197\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_02.jpg 645w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_02-600x183.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_02-300x92.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_02-100x31.jpg 100w\" sizes=\"auto, (max-width: 645px) 100vw, 645px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29768\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_03.jpg\" alt=\"marching ants selection\" width=\"750\" height=\"502\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_03.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_03-600x402.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_03-300x201.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_03-100x67.jpg 100w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_03-120x80.jpg 120w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h4>Step 2.<\/h4>\n<p>Choose Select and Mask to refine the selection<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29769\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_04.jpg\" alt=\"\" width=\"135\" height=\"34\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_04.jpg 135w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_04-100x25.jpg 100w\" sizes=\"auto, (max-width: 135px) 100vw, 135px\" \/><\/p>\n<h4>Step 3.<\/h4>\n<p>First we will make the edges nice, automatically.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29770\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_05.jpg\" alt=\"the select and mask workspace\" width=\"750\" height=\"431\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_05.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_05-600x345.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_05-300x172.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_05-100x57.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>Turn on show edges<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29771\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_06.jpg\" alt=\"show edges\" width=\"282\" height=\"209\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_06.jpg 282w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_06-100x74.jpg 100w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_06-160x120.jpg 160w\" sizes=\"auto, (max-width: 282px) 100vw, 282px\" \/><\/p>\n<p>Adjust the amount slider until you can just see the edges.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29772\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_07.jpg\" alt=\"outline in photoshop\" width=\"750\" height=\"432\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_07.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_07-600x346.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_07-300x173.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_07-100x58.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>Turn show edges off again<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29773\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_08.jpg\" alt=\"a smooth edged selection\" width=\"750\" height=\"432\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_08.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_08-600x346.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_08-300x173.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_08-100x58.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h4>Step 4.<\/h4>\n<p>Choose the refine brush and go around the edges of the hair to get a better selection.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29774\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_09.jpg\" alt=\"refine brush around hair\" width=\"556\" height=\"725\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_09.jpg 556w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_09-230x300.jpg 230w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_09-100x130.jpg 100w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><\/p>\n<h4>Step 5.<\/h4>\n<p>Choose Selection as the output option and click ok<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29775\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_10.jpg\" alt=\"output to selection\" width=\"307\" height=\"195\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_10.jpg 307w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_10-300x191.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_10-100x64.jpg 100w\" sizes=\"auto, (max-width: 307px) 100vw, 307px\" \/><\/p>\n<h4>Step 6.<\/h4>\n<p>Now you have a selection around our woman,<\/p>\n<p>Click on the new Layer icon in the Layers panel to create a new layer.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29776\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_11.jpg\" alt=\"make a new layer\" width=\"241\" height=\"362\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_11.jpg 241w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_11-200x300.jpg 200w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_11-100x150.jpg 100w\" sizes=\"auto, (max-width: 241px) 100vw, 241px\" \/><\/p>\n<p>Fill the selection with black on the new layer. (Press D to reset the color and use Option+Delete (Mac) Alt+Backspace (windows) to fill.<\/p>\n<p>Press Cmd\/Ctrl+D to deselect<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29777\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_12.jpg\" alt=\"fill with black\" width=\"750\" height=\"406\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_12.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_12-600x325.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_12-300x162.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_12-100x54.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h4>Step 7. Selecting the midground<\/h4>\n<p>Choose the background layer in the layers panel<\/p>\n<p>Grab the quick select again. This time select the ground near our traveller. Use the alt\/option key to remove from a selection if you went too far.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29778\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_13.jpg\" alt=\"fill foreground with black\" width=\"750\" height=\"413\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_13.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_13-600x330.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_13-300x165.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_13-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h4>Step 8.<\/h4>\n<p>Choose select mask<\/p>\n<p>Turn on show edges<\/p>\n<p>This time make the outline thicker<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29779\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_14.jpg\" alt=\"making a better edge in photoshop\" width=\"750\" height=\"413\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_14.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_14-600x330.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_14-300x165.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_14-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>Turn off Show Edges<\/p>\n<h4>Step 9.<\/h4>\n<p>Use the refine tool to clean up the selection around the bush<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29780\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_15.jpg\" alt=\"use refine brush in photoshop CC\" width=\"750\" height=\"411\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_15.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_15-600x329.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_15-300x164.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_15-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h4>Step 10.<\/h4>\n<p>Click ok<\/p>\n<p>Make a new layer<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29781\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_16.jpg\" alt=\"make a new PS layer\" width=\"238\" height=\"360\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_16.jpg 238w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_16-198x300.jpg 198w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_16-100x151.jpg 100w\" sizes=\"auto, (max-width: 238px) 100vw, 238px\" \/><\/p>\n<h4>Step 11.<\/h4>\n<p>Choose 40% gray as the foreground color<\/p>\n<p>To get 40% gray, click the color swatch.\u00a0<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29782\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_17.jpg\" alt=\"reset colors\" width=\"35\" height=\"52\" \/><\/p>\n<p>Choose black, and then under HSB, change the B to 40 (B is for brightness).<\/p>\n<p>Press Cmd\/Ctrl+D to deselect<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29783\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_18.jpg\" alt=\"choose a % of gray in photoshop \" width=\"534\" height=\"380\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_18.jpg 534w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_18-300x213.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_18-100x71.jpg 100w\" sizes=\"auto, (max-width: 534px) 100vw, 534px\" \/><\/p>\n<p>Fill the selection with 40% gray<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29784\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_19.jpg\" alt=\"Depth map\" width=\"750\" height=\"416\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_19.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_19-600x333.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_19-300x166.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_19-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h4>Step 12. Making the Depth Map<\/h4>\n<p>Hide the background, so only the black and gray layers are showing.<\/p>\n<h4>Step 13.<\/h4>\n<p>Press Shift+Cmd+Option+E (Mac) Shift+Ctrl+Alt+E (Windows) This will create a new layer on top that contains the content from the 2 visible layers.<\/p>\n<p>Hide all the layers except for the new merged layer we made in step 13.<\/p>\n<p>Press Cmd\/Ctrl+A to select all<\/p>\n<p>Press Cmd\/Ctrl+C to copy<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29785\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_20.jpg\" alt=\"blur mask\" width=\"750\" height=\"408\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_20.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_20-600x326.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_20-300x163.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_20-100x54.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h4>Step 14.<\/h4>\n<p>Open the Channels panel<\/p>\n<p>Click the new icon to create a new Channel (alpha 1)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29786\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_21.jpg\" alt=\"Channels in Photoshop \" width=\"243\" height=\"504\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_21.jpg 243w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_21-145x300.jpg 145w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_21-100x207.jpg 100w\" sizes=\"auto, (max-width: 243px) 100vw, 243px\" \/><\/p>\n<h4>Step 15.<\/h4>\n<p>If the channel is black, press Cmd\/Ctrl+I to invert it and make it white<\/p>\n<h4><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29788\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_23.jpg\" alt=\"invert\" width=\"750\" height=\"412\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_23.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_23-600x330.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_23-300x165.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_23-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/h4>\n<h4>Step 16.<\/h4>\n<p>Press Shift+Cmd\/Ctrl+V to paste in place. (The Shift key makes it paste in place)<\/p>\n<p>You should see a black foreground, gray midground and white background. This is our mask, or depth map<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29789\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_24.jpg\" alt=\"final mask in channels\" width=\"750\" height=\"409\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_24.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_24-600x327.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_24-300x164.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_24-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h4>Step 17.<\/h4>\n<p>Click on RGB at the top to make sure that the RGB is selected and showing and the eye next to the Alpha channel is off. (If it looks red, you haven&#8217;t done this step correctly, look at the screen shot carefully)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29790\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_25.jpg\" alt=\"select layer\" width=\"750\" height=\"410\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_25.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_25-600x328.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_25-300x164.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_25-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h4>Step 18.<\/h4>\n<p>Go back to the Layers panel and hide everything except for the background which is our image. Click on the background to make it active.<\/p>\n<p>Press Cmd\/Ctrl+J to duplicate the background, this gives us a safety layer.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29791\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_26.jpg\" alt=\"apply a filter to a photo\" width=\"750\" height=\"405\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_26.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_26-600x324.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_26-300x162.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_26-100x54.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>Choose the duplicated background layer if it&#8217;s not already selected. This is where we are going to apply our effect.<\/p>\n<h4>Step 19 applying the Lens Blur<\/h4>\n<p>Choose Filter&gt;Blur&gt;Lens blur<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29792\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_27.jpg\" alt=\"lens blur filter\" width=\"453\" height=\"473\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_27.jpg 453w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_27-287x300.jpg 287w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_27-100x104.jpg 100w\" sizes=\"auto, (max-width: 453px) 100vw, 453px\" \/><\/p>\n<h4>Step 20.<\/h4>\n<p>Change the blur amount to add more blur to the photo. The problem is, everything blurs.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29793\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_28.jpg\" alt=\"Photoshops lens blur\" width=\"750\" height=\"414\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_28.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_28-600x331.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_28-300x166.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_28-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>Here is the key.<\/p>\n<p>Under Source at the top, choose alpha 1 (our map) for the dropdown menu.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29794\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_29.jpg\" alt=\"Choose our channel;l\" width=\"216\" height=\"108\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_29.jpg 216w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_29-100x50.jpg 100w\" sizes=\"auto, (max-width: 216px) 100vw, 216px\" \/><\/p>\n<p>Now it should protect our woman in the foreground and apply the full blur to the background.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29795\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_30.jpg\" alt=\"background blur\" width=\"750\" height=\"414\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_30.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_30-600x331.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_30-300x166.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_30-100x55.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>Something interesting happened in the mid-ground where we made it gray. It only blurs 40%. the same percentage as the shade of gray. This means that the amount of blur is directly proportional to the shade of gray used.<\/p>\n<p>Click ok to apply<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29796\" src=\"http:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_31.jpg\" alt=\"final background in photoshop blur and bokeh\" width=\"750\" height=\"504\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_31.jpg 750w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_31-600x403.jpg 600w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_31-300x202.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_31-100x67.jpg 100w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/mask-blur_31-120x80.jpg 120w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>This is just a simple example of how this effect can be used, with 3 level of blur. You can use gradients or multiple shades of gray to build up a very complex blur mask if you put the time in.<\/p>\n<p>I really hope you enjoyed this week&#8217;s tutorial here at PhotoshopCAFE.<\/p>\n<p>PS Don\u2019t forget to <a href=\"https:\/\/photoshopCAFE.us1.list-manage.com\/subscribe\/post?u=69dd14bbcb9895c234db8095c&amp;amp;id=548063c647\">join our mailing list<\/a> and follow me on Social Media&gt;<\/p>\n<ul>\n<li><a href=\"https:\/\/www.instagram.com\/photoshopcafe\/\">Instagram<\/a><\/li>\n<li><a href=\"https:\/\/www.youtube.com\/photoshopcafe\">Youtube.<\/a><\/li>\n<li><a href=\"https:\/\/www.facebook.com\/photoshopCAFE\">facebook<\/a><\/li>\n<li><a href=\"https:\/\/twitter.com\/photoshopCAFE\">twitter<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>(Ive been posting some fun Instagram and Facebook Stories lately)<\/p>\n<p><a href=\"http:\/\/photoshopcafe.com\/blendmodeebook\">You can get my free Layer Blending modes ebook here<\/a><\/p>\n<hr \/>\r\n\r\n<strong>PS Don\u2019t forget to follow us on Social Media for more tips..<\/strong>\r\n<ul>\r\n\t<li><a href=\"https:\/\/www.instagram.com\/photoshopcafe\/\">Instagram<\/a><\/li>\r\n\t<li><a href=\"https:\/\/www.youtube.com\/photoshopcafe\">Youtube.<\/a><\/li>\r\n\t<li><a href=\"https:\/\/www.facebook.com\/photoshopCAFE\">facebook<\/a><\/li>\r\n\t<li><a href=\"https:\/\/twitter.com\/photoshopCAFE\">twitter<\/a><\/li>\r\n<\/ul>\r\n(I've been posting some fun Instagram and Facebook Stories lately)<br \/>\r\n\r\n<a href=\"https:\/\/photoshopcafe.com\/vault\/\">You can get my free Layer Blending modes ebook along with dozens of exclusive Photoshop Goodies here<\/a>\r\n\r\n<a href=\"https:\/\/photoshopcafe.com\/vault\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48395 size-full\" src=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2021\/03\/PS-vault-newsltter.jpg\" alt=\"photoshop goodies for free\" width=\"550\" height=\"363\" srcset=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2021\/03\/PS-vault-newsltter.jpg 550w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2021\/03\/PS-vault-newsltter-300x198.jpg 300w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2021\/03\/PS-vault-newsltter-100x66.jpg 100w, https:\/\/photoshopcafe.com\/wp-content\/uploads\/2021\/03\/PS-vault-newsltter-120x80.jpg 120w\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" \/><\/a>\n","protected":false},"excerpt":{"rendered":"<p>How to add a background blur to a Photo in Photoshop. Learn to make a blur mask \/ depth map to blur different parts of the photo with a realistic depth of field bokeh effect. <\/p>\n","protected":false},"author":6,"featured_media":29797,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43,51,52],"tags":[71,147,344,391,7284],"class_list":["post-29763","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-photoshop-tutorials","category-photo-tutorials","category-special-effects","tag-layers","tag-channels","tag-lens-blur","tag-blur","tag-bokeh"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to blur a photo background in Photoshop using blur masks and Depth Maps - PhotoshopCAFE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to blur a photo background in Photoshop using blur masks and Depth Maps\" \/>\n<meta property=\"og:description\" content=\"How to add a background blur to a Photo in Photoshop. Learn to make a blur mask \/ depth map to blur different parts of the photo with a realistic depth of field bokeh effect.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/\" \/>\n<meta property=\"og:site_name\" content=\"PhotoshopCAFE\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/photoshopCAFE\" \/>\n<meta property=\"article:published_time\" content=\"2019-03-27T21:24:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-05-22T20:32:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/blur-background.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Colin Smith\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@photoshopCAFE\" \/>\n<meta name=\"twitter:site\" content=\"@photoshopCAFE\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Colin Smith\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/\"},\"author\":{\"name\":\"Colin Smith\",\"@id\":\"https:\/\/photoshopcafe.com\/#\/schema\/person\/a2452c052fad7b30a7d49eeefb8ec2b1\"},\"headline\":\"How to blur a photo background in Photoshop using blur masks and Depth Maps\",\"datePublished\":\"2019-03-27T21:24:40+00:00\",\"dateModified\":\"2019-05-22T20:32:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/\"},\"wordCount\":964,\"commentCount\":30,\"publisher\":{\"@id\":\"https:\/\/photoshopcafe.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/photoshopcafe.com\/wp-content\/uploads\/2019\/03\/blur-background.jpg\",\"keywords\":[\"Layers\",\"Channels\",\"lens blur\",\"blur\",\"bokeh\"],\"articleSection\":[\"Tutorials\",\"Photo Tutorials\",\"Special Effects\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/\",\"url\":\"https:\/\/photoshopcafe.com\/blur-photo-background-photoshop-using-blur-masks-depth-maps\/\",\"name\":\"How to blur a photo background in Photoshop using blur masks and Depth Maps - 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