"john_doe_ph_d" wrote in message
> larry moe 'n curly wrote:
>> My Kodak C330 has an adjusment for exposure compensation and another
>> for manually selecting ISO 80-400. The manual says that both affect
>> picture brightness, so what's the difference between the two?
>
> Exposure compensation: If the camera automatically selects the lens
> aperture and shutter speed, you may want, in some situations, to
> increase or decrease the brightness of the image. If the latter, for
> instance, then if you use + exposure compensation the camera will
> increase the exposure settings above and beyond what it would otherwise
> have used. So you are directly affecting picture brightness in your
> selection of + or - exposure compensation.
>
Above is correct. You are changing the exposure settings away from what the
Camera indicates.
Below is true, but it is unlikely that the OP will be using Manual Settings,
and the extra brightness will not happen in any Auto Mode.
Changing the ISO setting will make the Camera more or less sensitive to
light. However the Camera Automation will then use a different Exposure
Value (Shutter speed - aperture setting) from what it would have done at the
previous ISO. The bright areas of the picture will mostly be just as bright
as they would have been.
However raising the ISO figure will allow the camera to work within a hand
holdable Shutter Speed Range, when a lower ISO would have meant it being
below this speed.
> ISO: This is basically setting the gain on the sensor. So for a given
> lens aperture and shutter speed, if you increase the ISO the sensor is
> more sensitive and the picture will be brighter. This comes at the
> expense of additional noise as the noise gets amplified also.
>
Roy G
>> Stay informed about: ISO setting verses exposure compensation - Kodak C330 
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