CPU\'d lenses may become more and more important as camera technology advances.
For example:
Take a look at the recent thread about alt lenses vignetting on the 5D II. It doesn\'t happen with Canon lenses, and the cause seems to have something to do with the electronic data recieved from the lens.
It\'s reasonable to assume that the next generation of cameras may have even more compatibility issues with alt glass, for similar reasons.
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Another possible issue, though something I\'m not sure of, yet:
The 5D II\'s processor has something called \"Peripheral Illumination Correction.\" This evidently improves shadow detail on images that hit the sensor from the sides. (or something like that.) Evidently, it is pre-programmed for the most important Canon lenses, and can be user-programmed for others. (or something like that) Can it be programmed for alt glass? I\'m guessing no, because the required electronic feedback doesn\'t exist.
Hmmm. I think I\'ll start a new thread about this.
Mar 21, 2009 at 12:14 PM
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