T3D Re: Distortion et all in zooms. (TECH-3D digest 285)

["Bob Howard" <bobh@xxxxxxxxxxxxxxxxxx>]

RE: Greg W. didn't like my remark about zooms and suggested I check 
out an RBT camera. I didn't refer to RBT in that post, but my remark 
 of course could disparage their use of zooms. From the loose 
standards of marking lenses I would think that RBT would have to do a 
job of selccting that would be unenconomical.
 I think more that slight errors in image size of the pair can be 
compesated for by the brain and it may not matter! I have 
corresponded with Keppler on several occassions and have respect for 
the tests in Pop Photo (which is about the only game in town.) 
For John B. his Nikkor (or Nikon) Macro lenses might well pass 
distortion 1% limit as they are COPY lenses designed for text as 
well as close-ups. I think the only RBT camera I would want is the 
Hexar combo. BobH
(I have many zooms and find I get excellent photo images from all in 
spite of their inbred faults. One reason in newer ones is aspheric 
surfaces on some elements. But I think I would be hard pressed to 
find two that matched on even the same settings of focal length.)


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End of TECH-3D Digest 286
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