What does extended iso range means?

Specifically for the discussion of the A-mount DSLR range
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sury
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What does extended iso range means?

Unread post by sury »

Forgive my ignorance but I have a question regarding ISO 100 setting on A900.
I have always set my A900 to ISO 200, thinking that is the "natural" setting.
I am curious why ISO 100 is not recommended or seldom mentioned. I did a
search and could not find any answers.

With best regards,
Sury
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David Kilpatrick
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Re: What does extended iso range means?

Unread post by David Kilpatrick »

It's fine. Technically, it is slightly overexposed and the tone curve is softened a bit to compensate. It makes it very good for portraiture.

David
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sury
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Re: What does extended iso range means?

Unread post by sury »

David,
Thank you. Can I leave it on instead of 200 or should I use it primarily for the portraits?

With best regards,
Sury
Minimize avoidable sufferings - Sir Karl Popper
David Kilpatrick
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Re: What does extended iso range means?

Unread post by David Kilpatrick »

For the best performance set the A900 to ISO 160, and in low light switch to 320. These settings havce proved to give the best combination of analogue gain and digital processing.

David
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sury
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Re: What does extended iso range means?

Unread post by sury »

David,
Thank you for the tip and insight. Much appreciated.

Sury
Minimize avoidable sufferings - Sir Karl Popper
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