Originally posted by JimmyDranox That defense is at least ''slim''.
Perhaps, but several assertions in Sator's article are fairly ludicrous when the history of interchangeable lens cameras is considered. "FF-sized lens mount"? Give me a break.
With a few notable exceptions, mount diameter for 35mm format cameras have been no more than 48mm since the introduction of the film type and for those that are larger, the size was never a consideration for marketing or review purposes. The talk about mount diameter vs. ability to do IBIS (interview quotes from Fuji folk) is also pretty silly and is a stronger indicator of image circle deficiencies of Fuji lenses then it is on the design constraints of their competitor's product. That the Sony system is deployed in the wild and appears to be working just fine should be proof enough that the laws of physics have been honored.
As for the matter of lens size on a mirrorless camera, many makers have been very successful in producing very petite optics for MILC.* Any bloat associated with the FE mount lenses lies with the design goals and not with the camera type.
Steve
Note: FWIW, the diameter of the lens mount as with the diameter of the rear element does not directly affect image circle or acceptability of IBIS. More important than image circle is so-called cosine^4 law and aspects of sensor design where angle of incidence (calculated from the margins of the exit pupil, IIRC) is critical for edge and corner performance. Those issues exist regardless of image circle and are a concern whenever the rear element sits close to the focal plane.
* Perhaps I am fudging a little here, but lenses for 35mm rangefinder cameras are traditionally quite tiny and manage quite nicely with rather short registration distance, though not quite as short as Sony FE (18mm). For example:
- Leica M (27.95mm)
- Leica Screw, aka M39/LTM (28.8mm)
- Contax G1 (29mm)
- Contax/Kiev Rangefinder (34.85mm)
Last edited by stevebrot; 04-05-2016 at 04:04 PM.