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FORUMS Photography Talk by Genre Critique Corner 
Thread started 15 Nov 2018 (Thursday) 22:10
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Noise Reduction and Sharpening

 
TeamSpeed
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Nov 18, 2018 06:17 |  #16

1. Shadows aren't ever blown, only highlights. Rarely do you have pure black pixels in an image, but very easy to have pure white, thus blown highlights.
2. In order to keep both the sky and a bird within the dynamic range of the camera, it is very common to bring up the shadows of the bird. A silhoutte of a bird is quite frankly boring IMO.
3. If you don't want the bird to be shadowed, then you will often have to blow out the sky to get the exposure on the bird correct out of camera.


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Isaac ­ Maxwell
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Nov 18, 2018 07:48 |  #17

I’m talking about the black spot under the chin that stays black no matter how much lightening or shadow reduction you use. I would call that blown. Those details can’t seem to be recovered. I couldn’t get them in DDR. You guys couldn’t get them in LR or PS. Is there a different word for pixels that are too dark to recover detail from? Am I the only one who sees them? I’ve viewed the images on my pc monitor and my iPhone screen, so it would be odd for it to be my two devices and only my two devices.


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Nov 18, 2018 08:47 as a reply to  @ post 18753476 |  #18

Yes, that. I don’t have access to my pc right now, or I would have circled it myself.


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Nov 18, 2018 09:30 |  #19

Isaac Maxwell wrote in post #18753481 (external link)
Yes, that. I don’t have access to my pc right now, or I would have circled it myself.

That is part of the birds natural plumage. Whatever you do don't photograph a leopard otherwise you will be in apoplexy.


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Nov 18, 2018 10:33 as a reply to  @ john crossley's post |  #20

Oh, well this is slightly embarrassing. I had to scroll to the second to last image of Red-Shouldered Hawk in Merlin to find an example of a hawk with this feature, but alas, there it is.

My apologies if I came off a bit defensive. I just thought I was losing my mind.


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Nov 18, 2018 11:00 |  #21

Isaac Maxwell wrote in post #18753535 (external link)
I just thought I was losing my mind.

you've come to the right place.

:D


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Nov 19, 2018 17:21 |  #22

Isaac Maxwell wrote in post #18753481 (external link)
Yes, that. I don’t have access to my pc right now, or I would have circled it myself.

That isn't a "blown shadow", ie. it's not pure black. As you raise the levels 3 stops, it doesn't go from black to gray, it actually shows its brownish colors. Again, rarely will you get a section of the image where the RGB values are actually 0,0,0. However on the flip side, it is quite easy to get blown highlights (RGB of 255,255,255). There is no way to pull data out of that, the pixel is saturated and no longer contains color info.

It looks like you already received your answer, but I feel this is good follow-up info for others too. Keep shooting and sharing!


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Nov 19, 2018 20:58 as a reply to  @ Isaac Maxwell's post |  #23

"Blown" is usually reserved for the clipping in highlights. If you underexpose a photo and clip shadows, they can appear to be blocky when you try to raise shadows (though as recent exchanges show with this photo, it's more about low resolution). I think the main thing that's challenging with this photo is that your subject doesn't take up much of the frame. If you are interested in wildlife, you'll need to get longer telephoto lenses. You'll be able to get more detail by framing your subject in most of the frame. It's also then easier to meter your subject. If it's just a portion of the sky, chances are that you're mainly metering the sky.


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Nov 20, 2018 05:55 as a reply to  @ davesrose's post |  #24

Yeah, I’m working on fixing that. It’s a slow process, though. I’m almost at the point where I can pick up a used 75-300mm so I can get a little closer. Long term goal is a 100-400mm, but that’s a little way off.


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Nov 20, 2018 05:59 |  #25

There are at least two good third party options, no reason to stay with just Canon lenses, especially the 75-300. Just not a good lens. The Canon 55-250 is a better lens, but also consider the Tamron 100-400 or Sigma 150-600.


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Nov 20, 2018 08:58 |  #26

I'm working with the basics and have no idea what I'm doing. John, I'm curious how you used the healing brush to remove the halo. I'm using my humble CS2 and a few plug-ins.

After putting too much time into it, here is my edit...


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Nov 20, 2018 09:50 |  #27

Intheswamp wrote in post #18755017 (external link)
I'm curious how you used the healing brush to remove the halo.



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Intheswamp
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Nov 20, 2018 11:46 |  #28

Wow!!! Very simple! Thanks for sharing that, John. I appreciate it.


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Post edited 2 months ago by Isaac Maxwell. (2 edits in all)
     
Nov 21, 2018 23:01 |  #29

Finally got some time to redo this edit. I followed basically the same process (noise reduction and sharpening in DDP followed by cropping and sharpening in PSE) but I turned everything way down from my initial post. I also lightened up the image significantly. I think it looks a whole lot better.

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Jeez, looking at it now, I think I should have just lightened the bird and the wire and left the sky darker. Maybe I'll go back and fix that real quick.

Edit: I tried it, and I had a lot more oversharpening artifacts and a lot more noise than this image and I applied the same amount of each to both images. Seems weird to me.

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Noise Reduction and Sharpening
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