Create realistic lens blur with depth in Photoshop cc 2020


Hi guys,
I am Manjot from lenspassions photography. In my last video, you watch the new feature
object selection introduced in photoshop 2020 You also watched the improved version of subject selection. In this video, you will learn about the new
improved version of lens blur feature in photoshop 2020
Before going further, kindly subscribe to my channel that didn’t and click on the
bell so you will be notified when I will upload a new video. we start from where we left in the last video
and that is a newly improved subject selection I recommend you watch the entire tutorial
first and once you understand it, watch it again and try it for yourself. As you know the Select Subject command lets
you select the most prominent subject in an image in a single click. Powered by advanced machine learning technology,
Select Subject is trained to identify a variety of objects in an image—people, animals,
vehicles, toys, and more. Watch how you can access Select Subject For better understanding, I have already added
the new background of bricks here Creating a duplicate layer by using Ctrl+j
in win and command +j in mac select quick selection tool from the tools
bar choose Select>Subject. Or Use the Object Selection tool, click Select
Subject in the options bar. click Select Subject in the options bar. Select the Subject automatically selects the
prominent subjects in the image. You can see that Select Subject is faster
and focused on analyzing imagery, because it has been updated using Adobe Sensei
AI machine learning, and has improved edge detection You can then refine the selection using other
selection tools. As I am showing in this image
If you want to know more about refining watch my previous videos
I have inserted the card above and added the link in the comment section When we change the background we need to add a color cast of the background to the subject So I added a solid background and filled it
with new background with matching color Bring the solid color layer above the masking
layer Chose the blend mode normal to soft light
See the difference before and after Now following the same way you can change
any background Now I come to the very important feature that
is also improved in photoshop 2020 Kindly watch the video at the end because
it will very beneficial and especially for those
who can’t afford fast lenses With improvements made to Lens Blur, you can
take more advantage of the depth information in the image captured by your camera. You can now set a focal point to choose what
to blur and keep in focus in your image. With GPU improvements,
you’ll also notice faster performance while applying the Lens Blur filters. Add blur to an image to give the effect of
a narrower depth of field so that some objects in the image stay in focus and other areas
are blurred. You can use a simple selection to determine
which areas are blurred, or you can provide a separate alpha channel depth map to describe
exactly how you want the blur added. When it comes to creating depth of field in
Photoshop many users use Gaussian blur or other techniques that hardly look realistic
or even close to the depth of field a real camera creates. In this video, you will watch how to create
realistic depth of field in Photoshop using Depth Maps. First I am using Gaussian blur feature
I have already made the selection by using subject selection and refining the same
Now going to the filter menu and select the Gaussian blur
Enter the desired value and click ok The effect is not showing because it is masking
layer so I am disabling the mask Now the background is blurred now
You can see here a ghost appearance is showing on the edges of the subject
I am zooming it and it is very much clear So that lens blur is more important
Now I am again starting from the mask layer after undoing all actions
Go again to the Filter Menu and this time select lens Menu
Going to depth map menu and select the layer mask
And the background was blurred perfectly You can also adjust the depth by using the
slider You can also invert the blurring effect either
foreground or background You can also specify the depth by using new
crosshair cursor click that area where you want a shallow or deep depth of field
After adjustment click ok The effect was already applied so I am disabling
the mask and now you can see the realistic blurred background
No ghost appearance and not any fringe is showing
Watch the difference before and after In this image, we simply need to blur the
background But what where so many objects or required
selective blur then we can’t blur like as a single background
It doesn’t make sense so in that case, we need to create a depth map
The Lens Blur filter uses the depth map to determine the position of pixels in an image. With a depth map selected,
you can also use the crosshair cursor to set the starting point of a given blur. You can use alpha channels and layer masks
to create depth maps; black areas in an alpha channel are treated
as though they’re at the front of the photo, and white areas are treated as if they’re
far in the distance. So first need to create an alpha channel
I already opened an image here you can see multiple objects near or far the subject
Select the main subject with subject to select the refining it
Choose a selection and then click ok Use Ctrl+J in window and Command+J in mac
to create a new layer of selected pixels Now time to create a depth map you need to
decide which selection you want to focus or blurred
The darker the shade of gray the less blur is applied to your image and Black in fully
focused and white in fully blurred And The gradient on the right is the gradient
used on the channels as an alpha layer. So you need to fill black the selection by
using Alt+Backspace in win and option+backspace in mac to keep the woman in fully focused
Take care foreground should be black in the tool panel
After that, I am selecting the foreground in dark gray want to slightly blurred
First, make a selection then fill it with dark gray
Now I am selecting the rocks behind the subject these are not far behind so after creating
selection I filled it medium gray Means this are will be blurred dark gray
Now I want to blur the all background so after making a selection I filled it white
Now we have 100% black selection means fully focused dark gray very less blur medium gray
means blur more than dark gray and in last 100% white means fully blurred
To create an alpha channel now you need to use gradient
Select the first layer and then add the gradient adjustment layer
Here are many gradients presets you need to select a black and white gradient
So in dark gray area, I used more black area that near the subject and gray that is a little
far Start with black and fading it with gray
Now come to 50% gray that I want to more blur than the foreground
After selection added a gradient adjustment layer and change white color to gray that
was filled in selection Start with 50% gray and fading it with light
gray In last come to the white selection, this
is the background area that I want to blur to show a shallow depth
Start with very light gray to 100% white Now I converted all gray layers to smart objects
by opening the layer menu Then selected all area with Ctrl+A in Win
and Cmd+A in the mac Then copy it and open the channel tab then
create a new layer and this is alpha channel layer
Use Ctrl+V in win and cmd+V in mac paste the selection on the alpha layer
Then select the alpha layer and select the RGB layers and go back to the layers tab
Now I am hiding the above layers where we created the depth map
Selecting the key layer Then Choose Filter>Blur>Lens Blur. For Preview, choose Faster to generate quicker
previews. Choose More Accurate to view the final version
of the image. More Accurate previews take longer to generate. For Depth Map, choose a source (if you have
one) from the Source pop‑up menu. Drag the Blur Focal Distance slider to set
the depth at which pixels are in focus. if you set focal distance to 100, pixels at
1 and at 255 are completely blurred, and pixels closer to 100 are blurred less. If you click in the preview image, the Blur
Focal Distance slider changes to reflect the clicked location and brings the depth of the
clicked location into focus. You can also specify the depth by using new
crosshair cursor click that area where you want a shallow or deep depth of field
Here you can see where I click with crosshair depth is changing according to the depth map
Here I click on a woman as the main subject that was black in map and rest of are blurred
according to a map that I have created with the selective selection
You can also create a layer mask for little adjustments I change brush opacity to 50%
and reveal the area that was blurred much that I don’t want In lens blur option you can invert the selection
or alpha channel you’re using as the depth map source, select Invert. Choose an iris from the Shape pop‑up menu. If you wish, drag the Blade Curvature slider
to smooth the edges of the iris, or drag the Rotation slider to rotate it. To add more blur, drag the Radius slider. For Specular Highlight, drag the Threshold
slider to select a brightness cutoff; all pixels brighter than the cutoff value
are treated as specular highlights. To increase the brightness of the highlights,
drag the Brightness slider. To add noise to an image, choose Uniform or
Gaussian. To add noise without affecting color, choose
Monochromatic. Drag the Amount slider to increase or decrease
noise. Blurring removes film grain and noise from
the original image. To make the image look realistic and unretouched,
you can return some of the removed noise to the image. Click OK to apply the changes to your image. I recommend you watch the entire tutorial
first and once you understand it, watch it again and try it for yourself. And also keep in mind
Using Gaussian Blur to create Depth of Field is not the best way of doing this and you
clearly see that on the edges of objects and small details
As you watched, the Lens blur is more realistic. Recap
Open an image Create selective selection according to the
depth you want Black is fully focused, gray is less blurred
and white is fully blurred Use gradient to fade black to gray to black
or gray to white Select all selection and copy them
Open channel tab create a new alpha channel Paste the selection here
Unhide alpha channel Go to the layers tab
Select the main layer use lens blur filter Select alpha from a depth map source
Use crosshair tool to select the main subject or the subject you want to blur and focus
After adjustment click ok then you can watch the magic of depth map
That’s all for today I will come again with new feature of photoshop 2020 Thanks for watching

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