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Thread started 11 Jan 2018 (Thursday) 06:59
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Is there any easy way to change this background?

 
TeamSpeed
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Post edited 5 months ago by TeamSpeed. (5 edits in all)
     
Jan 12, 2018 07:04 |  #16

Not sure what happened there? :)

I like this method because it gives me another tool to use when doing portraits and need the black background to be really black.

Perhaps these tips will help.

1) After you use CTRL on the alpha 2 channel to make the selection, go to masking and make sure you don't have any parts of the bird included. Just brush white over the areas in the head that are included, etc.

2) When you create a layer under the revealed selection and fill it with blue, set the opacity to about 35-40% on that blue channel.

3) Merge your image and then just use saturation to bring the blue up a bit more, it will be a bit bland due to #2


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docg
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Jan 12, 2018 07:11 as a reply to  @ TeamSpeed's post |  #17

Do you remember which channel you used in the initial step? Red, green or blue?

I tried red and then green. Also I may have over adjusted in the steps where the levels are tweaked.


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Jan 12, 2018 07:13 as a reply to  @ TeamSpeed's post |  #18

Thanks. I posted a question and comment before I read you're post with the tips.


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Jan 12, 2018 07:25 |  #19

I think I used blue, you want the sky to be bright.


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Jan 12, 2018 07:39 as a reply to  @ TeamSpeed's post |  #20

OK. Thanks. I'll try again this afternoon.


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Jan 12, 2018 07:58 |  #21

Justin Time wrote in post #18539247 (external link)
In my opinion it would be much easier to replace the sky and the branches with a nice blue sky with clouds.
There is a good deal of fringing in the branches.
Also it would be quite simple to select the bird and the main branch with quick selection tool, playing a bit with feather

That's what I was doing when my wife said my lunch was ready!

Here is my take of your method.


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Using the full size image would have proiduced a much better result of course.

Martin
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Jan 12, 2018 12:11 |  #22

I just think branches look more natural personally, and you can still add clouds. Before/after, could be a bit better beyond this yet though with others' skills.


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Jan 12, 2018 12:44 |  #23

There are a several of things that I think a lot of people don't consider when replacing a sky like this. The first one is lighting, and matching the quality of the replacement sky with the light falling on the subject. Quite a few of the attempts to put just colour in the sky seemed to be far too blue for the subject lighting for example.

Second on my list of things that can often make the image look odd is the lighting direction. Not too much of a problem with this subject, as the lighting is so flat to start with. This often plays along with my previous point in producing an image with an obviously replaced sky.

My last point for this thread is depth of field. Especially problematic when dealing with images shot with a telephoto lens. Teamspeeds version above looks really good, it matches the overall colour balance of the subject, and the masking is great. The thing that I notice is that given the degree of defocus of the branches behind the bird, the clouds should really be more focused.

Alan


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Jan 12, 2018 12:47 as a reply to  @ TeamSpeed's post |  #24

I wanted to replace the grey overcast with a blue sky with no clouds but keep the branches. Still working on my version. :rolleyes:


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Jan 12, 2018 13:31 |  #25

lacogada wrote in post #18538871 (external link)
That looks good Peano ... could you please explain the steps in using the calculations to make the mask.

Thanks. Calculations takes some practice. Check out a few of the tutorials on Youtube:

https://www.youtube.co​m …ry=photoshop+ca​lculations (external link)


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Jan 13, 2018 13:16 |  #26

Interesting technique which I'll create an action for. For any on the subscription LR7 can do that now. It starts at minute 1:30

https://www.youtube.co​m/watch?v=SFuHYJvBXIQ (external link)


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Jan 13, 2018 15:37 |  #27


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Using Calculations method.

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Jan 13, 2018 19:02 |  #28

Peano wrote in post #18539486 (external link)
Thanks. Calculations takes some practice. Check out a few of the tutorials on Youtube:

https://www.youtube.co​m …ry=photoshop+ca​lculations (external link)

Thanks Peano.




  
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Is there any easy way to change this background?
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