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Forum: Pentax SLR Lens Discussion
04-12-2016, 09:02 AM
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Hi Steve. I'll have to look through my account settings and see about fixing that not accepting personal messages thing. Makes me seem very anti-social.
Anyway: about the Zenitar. Yes, I use mine without the clear rear filter. When I first got it I tested it with and without the filter, and found the overall sharpness and contrast better (to my eyes) without it. Of course I had to adjust the infinity focus, but that's an easy job. I think the rear filter is just a simple dioptre rather than anything really important.
This only applies to APS-C digital, because that's the only way I've used the Zenitar. Of course, if you're going to use it with B&W film you'll want to keep the rear filter in place, so you can use the supplied colour filters when needed.
I didn't keep any of the test shots I did with the filter fitted, but here's a couple of random shots without it. The corner sharpness is good enough for my own amateurish needs, but then I'm no pixel peeper.
(This one is de-fished using PT Lens)
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