f/1.8 on m4/3, ASP-C, FF; are they the same?

Started Nov 1, 2010 | Discussions thread
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redrunnertc Contributing Member • Posts: 710
Re: Please stop confusing the normal people....

nugat wrote:

This was simpler back when light (exposure) meters were separate handheld devices. You set the film ISO on the meter and measured the light and got a set of pairs of numbers: shutter speeds and corresponding apertures. Eg. f16/125, f8/250, f5.6/500 etc. Each of the pairs gave the right exposure for a given scene and ISO.

FYI - this is EXACTLY how the "Program Shift" feature works on Panasonic cams. You can see on the sliding scale the f-stop and shutter speed to decide how much DOF or stop-motion you want and what the corresponding other factor will be

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