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Old 14-08-2012, 05:46 PM
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theodog (Jeff)
Every photon is sacred !

theodog is offline
Join Date: Oct 2007
Location: Coonabarabran
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Originally Posted by gregbradley View Post
.......... to only work in a narrow ISO band like 100 - 400 and after that very poorly.

Most astro work is ISO800-6400 so medium format may be very disappointing for that. They seem to excel in studio controlled lighting conditions.

This then begs the question, is ISO real or a ghost comparison to film standards? ie How is it measured now and compared to the "old" film standards?
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