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Topcon R-Topcor 5.6/300
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PostPosted: Tue May 04, 2021 2:44 pm    Post subject: Reply with quote
701641. Judge for yourself from posted images. I have not used it for quite some time, so maybe this next weekend I'll try again at the rookery.


PostPosted: Wed May 05, 2021 4:38 pm    Post subject: Reply with quote
tb_a wrote:
Lightshow wrote:
The serial #'s for my 2 lenses are 701234, 701364, anyone else that has an R 30cm f 5.6 please post your serial and how sharp it is, especially if yours is razor sharp because I'd love to know if there are better copies out there, cuz I want one.


I've got 701383; however my attempt to repair the aperture blades resulted in a mess. Unfortunately I'm unable to restore the lens into a usable condition not even without the blades. After looking at these prictures I regret it.....


Send the mess to me Wink

Gr S


PostPosted: Wed May 05, 2021 9:38 pm    Post subject: Reply with quote
stevemark wrote:
tb_a wrote:
Lightshow wrote:
The serial #'s for my 2 lenses are 701234, 701364, anyone else that has an R 30cm f 5.6 please post your serial and how sharp it is, especially if yours is razor sharp because I'd love to know if there are better copies out there, cuz I want one.


I've got 701383; however my attempt to repair the aperture blades resulted in a mess. Unfortunately I'm unable to restore the lens into a usable condition not even without the blades. After looking at these prictures I regret it.....


Send the mess to me Wink

Gr S


Up to you. Make an offer...


PostPosted: Wed May 05, 2021 11:51 pm    Post subject: Reply with quote
I have 701940, its a very nice lens, currently on fleabay.... I decided to keep a Schneider Alpa 360mm Tele-Xenar. I thought the Tele-Xenar was a little bit nicer, perhaps a placebo affect, with the Alpa name I dont know......


PostPosted: Fri May 07, 2021 12:58 am    Post subject: Reply with quote
My R. Topcor 1:5.6 f=30cm is serial number 702024. No opinions on its optical performance, barely used if ever. (Much prefer the Tamron SP Macro 300/5.6 as a practical lens.)

There's another one in the junk box in the basement with only four aperture blades left. May use it to make an autocollimator.
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