XF56 f1.2 released and specs

Started 7 months ago | Discussions thread
bigpigbig
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Re: XF56 f1.2 released and specs
In reply to malcolml1, 7 months ago

malcolml1 wrote:

Yes - exactly - that's what I believe too. but some others argue differently.....and I am trying to understand why!

They are either misinformed or making an necessary conversion from actual ISO to some hypothetical equivalent ISO.

Light meters have no input for sensor size or film size. I can shoot ISO 100 35mm film or an 8x10 sheet of ISO 100 film and if the same aperture is used then the same shutter speed will be required for an equivalent exposure.

Will more "total light" reach the 8x10 film sheet, of course. But it is irrelevant to the exposure (tone). Will more detail be captured by the 8x10 sheet, of course. But it will have the same exposure (tone).

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