Quote:
Originally Posted by White Rabbit
Hi Alex
Could you explain how you up the iso to 6400 in post production.
Thanks
Sandy
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I always shoot RAW (NEF in Nikon terms) and then post-process in Nikon Capture NX2. Nikon D700 has amazing RAW headroom and allows to recover about 2-3 f/stops of extra info.
How I do it depends on an image and is hard to explain, I use my normal daylight image processing experience. Mostly I use control points or gradient to select portions of the image and then apply levels and/or curves to brighten the highlights and midtones. Sometimes I use a few iterations to get the output I want.
I am not sure if this is "technically" correct, but my understanding is that by doing so I amplify the highlights/midtones signal by 1 or two f/stops for parts of the image (effectively increasing ISO sensitivity in highlights/midtones).
I found that with Nikon DSLRs RAW format you can underexpose by 2 f/stops at say ISO1600, then increase the exposure level in post production by 2 f/stops and arrive at the same output as if you shot at ISO6400 (the only difference is in noise reduction as set by the camera).
Hope this helps.
Alex