Re: Samyang 24mm tilt-shift lens to be released mid-year
U.C. wrote: sebboh wrote:
medium format typically has a longer flange distance making it more complicated. the optics aren\'t necessarily any more complicated than some of the lenses samyang already makes. it\'s the need to actually make precision machined parts that makes T/S so expensive. autofocus has removed the need for a lot of precision in lens manufacturing and the tilt shift mechanism manufacturing can\'t really be shared with any higher volume products. the mechanism isn\'t complex though, it just requires a high level of precision.
That\'s true, but for t/s a far bigger image circle is needed, one that\'s more comparable with medium format. Or to put in another way: a larger FoV when shifting.
This is my understanding as well. It seems like it took Canon a little time to sort out the abberations and challenges caused by tilt/shifting to max levels. I\'m sure it is easy to just make a larger image circle, but not so easy to make one that is very sharp and free of distortion/abberations. Also think that corner-corner sharpness is more important on a TS lens since they tend to find a lot of use in architectural and tilting for max DOF.
Sep 04, 2012 at 03:01 PM
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