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So how does using FF lens on a smaller format "ruin" it?
I mean, if I've got a Canon 135/2 and mount it on a 5D, 1D II and a Rebel ... how does using any of these different sensor size cameras get ruined by using full frame glass? The projected image from the lens will be the EXACT SAME, they will simply be capturing a different cropped portion of the projected image circle.
Imo, this is no different than projecting an image from an enlarger to cover an 8x10 sheet of paper, then replacing the 8x10 area of capture with a 5x7 sheet of paper. The projected image will be EXACTLY the same, only the area of cropped capture will be different.
The main reason for using MF glass on FF is two-fold, less vignetting, smoother transitions. If you like the higher contrast afforded by platforms with smaller sensors and their glass designed to produce a smaller image circle and its corresponding projection differences, then you may not appreciate the large image circle projection from the larger platforms.
Another way to consider it is to compare Leica M vs. Leica R ... load a roll of the same film (same capture area/grain structure) into each and yet you get different "looks". What properties are involved that yield the variance? Imo, it isn't the different format of the capture, it is the properties of the projected image that render the difference. So it is with choosing to use MF glass ... it offers a different image projection, even if you are only capturing a cropped portion of what it might provide with its larger image circle (a product of being farther from the image plane).
However, that projected image is the EXACT same projection whether you mount it to an MF, FF, APS-H, APS-C or 4/3 camera. The only thing that changes, is the area captured/recorded of that projection. The projected image never changes. If you like the drawing style of the projection from MF glass ... it hasn't changed, no matter what you project it onto.
If you mount MF glass on a camera with a MF sensor size of 44x33, does it give you the MF look at the 33mm edge? If the projected image @ 33mm renders the MF "look", then why wouldn't a projection capture @ 36mm edge of FF render the "look" ... isn't it the same projection?
Edited on Jul 01, 2013 at 09:22 AM · View previous versions
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