Pentacon Six

Pentacon Six
Pentacon Six
Medium format/APS-C exposure difference?

I have borrowed Pentacon Six TL 6×6 camera and the biggest problem is exposure. Since it doesn’t have light meter, I have a lot of trouble getting the right exposure. The prism who comes along has a light meter but it doesn’t work right. I was trying to use ma APS-C (0.019 CoC, 1.6X) camera to determine the right exposure, but I guess there is an exposure difference between APS-C and 6×6 so I’m wondering, how can I calculate that difference and use my APS-C as a light meterr?

Thanks in advance!

Exposure is exposure. If you have the digital set to the same ISO, aperture, and shutter as the 6×6, the exposures should be the same. The only difference should be depth of field, which will be greater on the digital. The focal length of the lenses should be fairly equal as well, with conversions applied. You want the in-camera meter to see the same scene that the 6×6 is seeing.

If you camera has a spot meter, use that. Then the focal length won’t matter.

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