Quote:
Originally Posted by Doug Pardee
With the micro-4/3 system, lenses are not required to be telecentric. The flange-back distance is mainly limited by needing enough room for non-telecentric lenses to get a decent amount of light into the corners and edges, and of course leaving room for the shutter mechanism and all of the stuff stuck on the front of the sensor.
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Now I'm thoroughly confused (not unusual for me).
A shorter flange-back distance in u4/3 means the rays to the corners of the sensor are
at a higher angle from perpendicular. If the lens is not telecentric, then either the sensor must employ u-lens offset or the image processor must compensate for vignetting, CA, etc, introduced by the sensor. If it's the latter, then the image processor must know the characteristics of the lens re telecentricity. If true, then only u4/3 lenses in shorter focal lengths would perform well. Just how confused am I?