XF56 f1.2 released and specs

Started Jan 6, 2014 | Discussions thread
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Red5TX
Red5TX Senior Member • Posts: 1,586
Re: XF56 f1.2 released and specs
1

Caerolle wrote:

I see this misunderstanding of exposure on the forum a lot lately. People need to go back to using hand-held light meters and setting exposures across multiple cameras to see that exposure is independent of sensor size. Depth of field will change at a given f-stop though.

I actually tested this a while back. I set my 1/2.3" sensor compact and my full-frame camera both to the same aperture and shutter speed, and the ISO was within 1 stop.

I too used to believe that the light gathering was changed by the factor of sensor size, but it is not so: at the same aperture, no matter the sensor size, the exposure is the same, give-or-take differences in the camera meters.

Exactly.  I can use a light meter to tell you the proper ISO, aperture, and shutter speed without knowing your sensor size.  This would be impossible if sensor size were a relevant variable in determining exposure.

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