X-Pro 1: No exposure compensation in Auto-ISO - is this a bug?

Started Feb 5, 2013 | Discussions thread
mngsmt Regular Member • Posts: 303
Re: X-Pro 1: No exposure compensation in Auto-ISO - is this a bug?

Jeff Charles wrote:

jondh wrote:

Off course it is like that. Auto ISO is used with the purpose of getting better ISO based on the available exposure not to change the exposure of the manual mode.

Right. ISO cannot change exposure. Only aperture and shutter speed can do that.

Although maybe technically correct, I think this is nitpicking. The amount of amplification applied by the camera is definitely part of the equation for calculating the "exposure".

Think of a variable ND filter that sits in front of the sensor, for example. The fact that the signal amplification (aka ISO) sits kind of "behind the sensor" is not really important in practice.

Do you expect that if you increase exposure compensation, for example, from EV0 to EV-1 the photo will be darker because ISO change from 400 to 200?

Yes. Assuming no change in exposure, increasing ISO makes the photo brighter, and decreasing ISO makes the photo darker.

Yes. That's what Auto ISO should provide. A means to manually change the brightness of the resulting photo. As any other automated exposure mode does.

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