The Filters We Need With Digital...

Started Oct 5, 2008 | Discussions thread
JensR Forum Pro • Posts: 17,694
Re: A "bonus" use for the polarizer...

Hi Joseph!

When you’re shooting
outdoors, and your digital camera doesn’t really work at an ISO lower
than 200 (and even the ones that say they go down to 100 are
typically better at 200

To my knowledge, SNR is (almost) always best at base ISO. Some cameras offer an extension towards lower ISO values (Canon 5D has native 100 but can go to ISO 50 with a custom function, Sigma SD14 similarly) and usually manufacturers warn that there is some drawback to that, for example limited highlight-headroom or the like.

I do not know of a camera that gains better SNR at a higher than native ISO. If you could provide links and more info (like what you mean by "better"), this could change, though.

Cheers
Jens

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'Well, 'Zooming with your feet' is usually a stupid thing as zoom rings are designed for hands.' (Me, 2006)
My Homepage: http://www.JensRoesner.de

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