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| p.4 #15 · EOS-M - Canon mirroless system |
If this sensor is about 20mm wide and a 3:2 ratio, the lens would be about a 40mm equivalent lens, which would make sense, since it looks similar in proportion to the m4/3 20mm pancake. If this sensor is actually Canon's 1.6x crop sensor, then Sony should take notice of this lens design, because the Zeiss 24 is huge in comparison, despite being a little faster.
Remember we don't know how the lens performs or what the register of the camera is. Canon could have gone with a much longer register (as Samsung did) to make compact lens design easier, or included compensating microlenses on the sensor or accepted the quality tradeoffs that Sony did with the similar-sized 16/2.8. And the Zeiss 24 is unusual in that it is extremely telecentric, which is why it is so large and also one reason why it performs so well on the NEX-7.
Frankly I suspect the large size of the Zeiss 24 is in part a reaction to the response the 16/2.8 got, the originally shown prototypes were much smaller and it grew to the current size late in the game. The 16 gets widely panned for its poor edge performance, ignoring the simple fact that it is in fact a very good performer across most of the frame and that for the cost, it's an excellent performer. Even the Sigma 19/2.8, which is widely considered a remarkable performer, is only a little better at the edges than the Sony 16, and the Sigma is both larger and less wide, making the design simpler to execute.
I think Sony's problem could be in the inconsistent design of the sensor assembly and how it handles oblique light rays, so they have to design the lenses to work with the lowest common denominator. Vivek on another forum took apart the NEX-7 sensor and found an extra piece of coated glass between the dust shaker and sensor that the 5N doesn't apparently have. It's all pretty odd, and I wish that Sony had a clearer handle on it. I sold the ZA 24 after a while, partly because I wasn't a fan of the size.
Judging by the pics, the registration looks maybe slightly longer than NEX, although not nearly as long as NX, but we'll see. I'm still not convinced that the sensor is a full 1.6x crop aps-c.
Edited on Jul 20, 2012 at 04:14 PM · View previous versions