>
> 24mm x 36mm = 864mm^2
> 600mm x 700mm = 420000mm^2
>
> Given the difference.. WOW! I'm curious, I understand field work, action
> shots, etc.. BUT, why would someone use a 35mm in the studio then?? 6x4.5,
> 6x6 or 6x7, just has such HUGE advantages it's not funny.. Ok, I'm doing
> the math here..
6x7 is 60mm by 70mm, not 600mm by 700mm. Actually, it's slightly smaller,
2-1/4" by 2-3/4", nominally. 120 negatives are usually about 57-58mm
wide. Since 6x7 matches the shape of papers more closely, you get about
a 2.5 larger, linearly, negative. Which is about 6, or so, times the
area. That's enough to make a substantial increase in quality for things
like calendars and magazine ads.
Paul
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