6D vs 7D --- Image Quality (there's no comparison)

Started May 4, 2013 | Discussions thread
Dave Luttmann
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Re: 100% cropped 5DIII samples in real world
In reply to TTMartin, May 9, 2013

Pushing and Pulling are terms that come from the darkroom.

If you pulled an image you were darkening the image, and if you pushed an image you were lightening it (often to make film perform at other than its designed ISO).

So pulling the shadows would mean making them darker.

So more photographically correct terminology would be that you would pull back highlights and push up shadows.

Correct. I remember all this from many years of darkroom work, masking, etc. Of course, it actually has nothing to do with shadows. Exposing a target with a large scene brightness range means exposing more for the highlights. Invariably, this means the midtones can be moved from zone 4 or 5 down to zone 1 to 3. In order to place the midtones back where they should be involves increasing their values by 2to 4 stops. Because of this, we get a breakdown in tonality in the midtones. It has nothing at all to do with shadows. Unfortunately, some people dont understand this issue...which is why it keeps coming up

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