Originally posted by gazonk Are you sure? That would make it more-than-full-frame MF (the 645 film size is smaller at 56 x 41.5). It would also make 76 mm the normal lens focal length, i.e. the 55mm on the road map would then be a WA lens.
Yep, looked at the wrong line in my post, the numbers I posted in another previous post are correct though
https://www.pentaxforums.com/forums/826629-post23.html Quoted post, updated with S2 numbers:
Normal 645 (at least following Pentax specs) is 56 × 41.5 mm (from 120 film - Wikipedia, the free encyclopedia) or 69.7mm diagonal.
This 39MP Kodak sensor would be 36.7*49mm and 61.2mm diagonal. Indeed a 1.1X crop (based on diagonal calculation).
The Leica S2 is 30x45mm or 54mm diagonal.
In terms of area:
1798,3mm˛ for the Kodak sensor
1350mm˛ for the Leica S2 sensor
2324mm˛ for the original 645 format.
On area based calculation: 1.3X crop (if didn't make any mistake).
For comparison:
FF is 864mm˛
APS-C is about 375mm˛ (thought there are a couple differences following sensors)
4/3 is 243mm˛.
There's the same area difference between FF and S2 than between S2 and cropped Kodak 645 sensor. The cropped 645 is more than two times as big as FF. And the original 645 one of the smallest legacy MF formats.
Really, the S2 isn't MF IMO. Bigger than FF, but no MF either. Please not that previous 'MF' sensors from Kodak were quite more cropped, so I wouldn't have called those 'MF' either. I can't go against Leica and not others equivalent.