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Seems Sigma is rescueing Sony APS-C
#8
There are issues with large aperture lenses, with a lot of light loss. Because Sony on the A7/9 series very heavily lifts signal amplification with large aperture lenses, people do not complain because they are oblivious to the issue. Also the throat diamater is the reason why the STF lens is only 100mm and only f2.8, because Sony wanted round bokeh discs all over and the narrow mount limited the focal length and aperture with that in mind.

Canon and Nikon have not chosen a wider mount for no reason, even if the FUD-machine might want you to think that. With this new knowledge in mind, for sure the Sony FF mirrorless mount is the worst of the bunch to choose.

Wide angle issues (on APS-C "NEX" (5 and 7) and maybe some lenses on A7/9) were due to "incompatible" sensor stack glass thickness, not due to anything mount related.
  


Messages In This Thread
Seems Sigma is rescueing Sony APS-C - by marco - 01-08-2019, 12:01 PM
RE: Seems Sigma is rescueing Sony APS-C - by you2 - 01-09-2019, 07:04 PM
RE: Seems Sigma is rescueing Sony APS-C - by Brightcolours - 01-10-2019, 02:53 PM

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