Greg Lytle
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Posts posted by Greg Lytle
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Hi folks,
I own a Porst 650 XL and Porst 1500 XL Microcomputer and was wondering about the the precision of the split viewfinders on each of them. I read the instructions which instruct me to zoom in all the was, focus zoomed in, the zoom out to a desired wider angle. When I zoom in to focus, the split finder lines up, but the split finder lines do not stay aligned upon zooming out and I guess I thought the lens should be parafocal upon zooming. Does this mean my split viewfinder is not accurate? Any guidance is appreciated.
Thanks,
Greg Lytle
Focusing question from amateur with split viewfinder
in Super-8
Posted
Thanks Mark, I did just what you suggested, I think. I put the 1500 on a tripod and put a flat focus target 8 feet from the film plane. I then set the focus of the lens to 8 feet. It seemed dead-on. The focus ring does not move at all when zooming out, and it appears the rest of the field of view stays in focus, so I think that worked. I will do the same test on the 650 tonight. I appreciate your help!
Greg Lytle