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ISO 50 - Reduced DR on original DP's

Started Aug 18, 2015 | Discussions thread
MOD Kendall Helmstetter Gelner Forum Pro • Posts: 20,587
Re: ISO 50 - Reduced DR on original DP's

SRT201 wrote:

Interesting. So there's no gain on the imager and it's all just a matter of underexposure and multiplication during the development stage.

In that case then the ISO 50 with -1 compensation should be identical to ISO 100's normal exposure. Correct? Fairly easy to test.

"In theory there is no difference between theory and practice. In practice there is."

- Yogi Berra

Are the Quattro's ISO-less as well?

All of the Sigma cameras are.

That said, when using SPP to actually process the raw files they do not behave as if they were ISO-less.

You should test and see what happens (especially in the shadows), but I agree with the statement that you lose about a stop of highlight recovery.

 Kendall Helmstetter Gelner's gear list:Kendall Helmstetter Gelner's gear list
Sigma 70-200mm F2.8 EX DG OS HSM Sigma 8-16mm F4.5-5.6 DC HSM Sigma 24-70mm F2.8 EX DG HSM Sigma 50-500mm F4.5-6.3 DG OS HSM Sigma 85mm F1.4 EX DG HSM +4 more
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