DaveMart
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 p.84 #19 · 'Unofficial' Photokina RUMOR Thread | |
Koivulehto wrote:
DaveMart wrote:
One of the many advantages of an EVF camera is that it would allow smaller. lighter, less complex lenses, as you don't have to worry about clearing the mirror.
It might therefore make sense to go to a new mount, so that Canon are effectively offering 'electronic rangefinder' lenses.
They could leverage the existing lens base by some kind of adaptor, which would let EF/EFs lenses function.
If they seee it as an electronic Leica, then two or three relatively wide primes and a fairly wide tele would do, with longer focal lengths catered for by the adaptor.
Let's speculate a bit more of how Canon might approach this (if they really would be on this track):
- It would be much better for EF lens brand if EF lenses would fit directly in the new body
- For long/big EF lenses, the main challenge in designing a miniature body is to reach good ergonomics for holding the lens. This is easier to accomplish if Canon can use the existing lens-sensor depth for the body alone, without splitting it between the adaptor and the body
- For new miniature lenses, branded e.g. as EF-M, maintaining full EF-S compatibility doesn't need to cause a real body+lens overall size penalty, because the new lenses can be designed inside the mount (= approximately flush with the body), providing the manual focus and zoom control issues can be solved
Of course Canon might use the adaptor approach in spite of the reasoning above.
I don't know enough about lens and camera design to make any authoritative comments, but my assumption was that if you used EF lenses without an adaptor, then if you had designed the body optimally to take account of the lack of a mirror, then you might have problems.
Hence my suggestion of an adaptor.
Of course, you could make the camera fully compatible with EF, but then you mihgt have to compromise the body design.
Let's not forget that Canon make money selling lenses, so they might be able to make some extra money if they could sell 'EVF optimised' lenses! - without destroying their customer base, of course.
Regards,
DaveMart
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), EF-S mount didn't exist yet, right, so it would make sense that these lenses wouldn't mate up to the old APS-H size.
