What is the secret of floating ISO

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aa_2005 - 31 May 2005 23:34 GMT

My camera is Olympus C-170. It seems to have a scheme where
buy we can get "floating" ISO numbers such as 151, 179...
I was just wondering, what is the camera doing internally to
achieve such values?

tia

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JohnR66 - 01 Jun 2005 00:19 GMT

> My camera is Olympus C-170. It seems to have a scheme where
> buy we can get "floating" ISO numbers such as 151, 179...
> I was just wondering, what is the camera doing internally to
> achieve such values?
>
> tia

Perhaps it is simply linear gain adjustment on the sensor. Many film cameras
have had stepless aperture or even shutter speeds in auto mode for years.
John

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