[OM] Re: 420 and 25/2.8

[Wayne Harridge]

> 
> Does anyone here know what the "system performance" is?
>

It's easy enough to measure if you're looking at linear distortion and I'm
sure optics designers know how to measure all the other lens performance
parameters you might be interested in, e.g. CA, field curvature, coma, MTF,
etc.

...Wayne



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