Why FF cameras should be always on top of DSLR/SLT line?

Started Oct 13, 2011 | Discussions thread
Klipsen Veteran Member • Posts: 6,150
Wideangle lenses need to be retrofocus - mirror or not

There's been a lot of nonsense about how lenses for mirrorless cameras can be a lot smaller, because they dont have to take the SLR mirror into consideration. Well, instead they have to deliver light to photosites hiding at the bottom of a well, and oblique rays wont get there. As a consequence, you probably won't find an 8 mm APS-C lens that actually has its rear rear nodal point 8 mm from the sensor's surface.

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