D7100 Banding Issue...

Started Apr 15, 2014 | Discussions thread
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Re: The typical apologists are out in force again
In reply to _sem_, Apr 16, 2014

_sem_ wrote:

trac63 wrote:

A lot of people, including myself, see it as photographically irrelevant. That does not make us "apologists".

Here is a photo I took at ISO 6400 with significant shadow areas in the frame:

No sign of banding.

I get a little bit of banding at ISO 12,800 but even that is fixable with Topaz DeNoise. And 12,800 is an insane speed that I never use anyway.

This is not how one gets banding. At high ISO, banding gets masked by noise. If you lift such shadows, you only get noise.

Banding is a problem if one wants to do HDR-like rendering without having to do multiple exposures, by using the whole available sensor DR at base ISO. With proper exposure and careful processing (in LR for instance), good sensors allow over 5 stops shadows lifting without the lifted shadows looking noisy, washed-out, posterised or banded. Similar torture tends to reveal banding with the D7100 earlier than the other typical issues.

I haven't seen any DX camera that you can push shadows more than 5 stops without seeing an increase in noise.  With 5 stops you're looking at ISO 3200 equivalent and you're going to see noise there and a loss in detail.  The best results are always going to be with a multi-exposure, blended image.  Even FX has a loss of detail with 5+ stop push.

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