tdodd
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Les, think for a moment what is happening when you shoot at high ISO. If you were to shoot at 100 ISO and expose fully to the right you would have pixels in the frame that were fully saturated and essentially noise free. But, up the ISO to 5000 and even the brightest pixels will be exposed to only 1/50 or 2% of their capacity. Other pixels will be even less well saturated. If your exposure is 2 stops under then the brightest pixels will only be receiving 0.5% of the light. If you crop the image to 1/4 of the frame then you've thrown away 3/4 of the light you captured, leaving you with just 0.125% of the light in that crop. It's not much to work with.
Looking back to your development settings in DPP for the swan shot, not only did you have High ISO NR set to low, but also you had sharpening set to 6. With a capture such as yours, in very poor light, I think you need to accept that a more hands on approach to refining your sharpening and NR adjustments is required. I don't know how intelligent DPP's sharpening is, but there was no earthly point in sharpening the noisy sky, yet it surely looks like that's what happened. Even within DPP you do have independent control over chroma and luminance NR. Roll your sleeves up and get involved in refining the settings, or look to using NR software such as Neatimage, Noise Ninja, Noiseware and others. If you were to use software such as Lightroom you would get a little more control. If you were to use Photoshop you could gain a lot more control.
Here's what DPP was able to do on your JPEG with some adjustments to the NR settings. Perhaps with access to the original raw there would be more scope to improve things.....
Full image....
Of course, applying NR has eroded detail, although to be honest there wasn't much in the way of "real" detail there in the first place, as it was so obscured by noise. Limited noise can actually create the impression of detail, but it is false detail and not worth having in my opinion. This brings me back to targeted sharpening. There's no point sharpening noise and there's no point sharpening false detail. Your best bet here is to perform edge sharpening only on the main features such as the outline of the swan, areas of different colour around the bill and head, and better defined feather areas. That's not something you can tailor in DPP, but I think setting sharpening as high as 6 was probably counter-productive.
Looking back to your development settings in DPP for the swan shot, not only did you have High ISO NR set to low, but also you had sharpening set to 6. With a capture such as yours, in very poor light, I think you need to accept that a more hands on approach to refining your sharpening and NR adjustments is required. I don't know how intelligent DPP's sharpening is, but there was no earthly point in sharpening the noisy sky, yet it surely looks like that's what happened. Even within DPP you do have independent control over chroma and luminance NR. Roll your sleeves up and get involved in refining the settings, or look to using NR software such as Neatimage, Noise Ninja, Noiseware and others. If you were to use software such as Lightroom you would get a little more control. If you were to use Photoshop you could gain a lot more control.
Here's what DPP was able to do on your JPEG with some adjustments to the NR settings. Perhaps with access to the original raw there would be more scope to improve things.....
Full image....
Of course, applying NR has eroded detail, although to be honest there wasn't much in the way of "real" detail there in the first place, as it was so obscured by noise. Limited noise can actually create the impression of detail, but it is false detail and not worth having in my opinion. This brings me back to targeted sharpening. There's no point sharpening noise and there's no point sharpening false detail. Your best bet here is to perform edge sharpening only on the main features such as the outline of the swan, areas of different colour around the bill and head, and better defined feather areas. That's not something you can tailor in DPP, but I think setting sharpening as high as 6 was probably counter-productive.
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) and I also have the Canon 50 f1.8 but not used it yet.
