Why not a 21.6mm x 21.6mm sensor?

Started Jan 23, 2013 | Discussions thread
Steen Bay
Veteran MemberPosts: 6,336
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Re: Why not a 21.6mm x 21.6mm sensor?
In reply to Dr_Jon, Jan 23, 2013

Dr_Jon wrote:

Are the lenses designed to perform okay that far out? That the image circle gets there doesn't mean the designers worried about issues outside the standard m43 sensor area (BTW I always wondered about that and the MAV sensors, also Vignetting).

Vignetting isn't a problem. The GH2 doesn't have more vignetting when shooting 16:9 images than it has when shooting 4:3 images. The diagonal of the sensor area that's used is the same in both cases. A MAR sensor just takes full advantage of the 21.6mm image circle with all the supported aspect ratios. The part of the sensor that's outside the image circle isn't used.

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