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Old 9th March 2016, 09:27 PM
Lostlabours Lostlabours is online now
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Join Date: Apr 2012
Location: West Midlands/Aegean
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Look at the maths the long edge of 645 and then 67, it's only 1/6th longer for the 6x7 negative. I agree with Alan that a 6x9 will show a slightly better jump.

If you're shooting B&W I'd suggest looking at switching films, if you can shoot Pan F rather than a 100 or faster ISO film you'll see a much greater increase in quality (using the Mirror lock and a tripod) than the insignificant difference between 645 and 67.

Ian
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