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Unusual Russian mirror lens
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PostPosted: Mon Dec 22, 2014 11:16 pm    Post subject: Unusual Russian mirror lens Reply with quote
Not seen one of these before:

http://www.ebay.co.uk/itm/Large-Mirror-reflector-Lens-GOST-made-in-RUSSIA-5-261-69-with-filters-case-/400824140087?

Anyone know anything about it?


PostPosted: Mon Dec 22, 2014 11:39 pm    Post subject: Reply with quote
It's actually an MTO 500mm, which is reasonably common. Search for those keywords and you'll find far more info Smile

I found it decent, but big and heavy!


PostPosted: Mon Dec 22, 2014 11:51 pm    Post subject: Reply with quote
If you want to buy it, you might want to remove that link...


PostPosted: Tue Dec 23, 2014 12:04 am    Post subject: Reply with quote
I already have the tamron 350 and 500mm thats enough mirrors for me .... at the mo.....I think..... Confused


PostPosted: Tue Dec 23, 2014 12:16 am    Post subject: Reply with quote
marcusBMG wrote:
I already have the tamron 350 and 500mm thats enough mirrors for me .... at the mo.....I think..... Confused


Sure, but I've bookmarked the link now, there's really no reason for it to stay there... Laughing

I wonder how the MTO would compare to my Celestron 80/400 for moon shots.


PostPosted: Tue Dec 23, 2014 1:16 am    Post subject: Reply with quote
ManualFocus-G wrote:
It's actually an MTO 500mm, which is reasonably common. Search for those keywords and you'll find far more info Smile

I found it decent, but big and heavy!


Quite mysterious that they continued the production of those MTO (since 1957), whereas in 1960 they created the MTOM, which is way more compact and lighter (see here). It also perform quite good. This MTOM never was produced in large production, only prototypes.


PostPosted: Tue Dec 23, 2014 2:58 am    Post subject: Reply with quote
I had F8 lens several times and kept only more rare f6.3 lens, F6.3 lens is stunning really.


PostPosted: Tue Dec 23, 2014 10:24 am    Post subject: Reply with quote
bugger am watching this lens...........................it very bad.....maybe full of fungus......so dont bid


PostPosted: Tue Dec 23, 2014 3:47 pm    Post subject: Reply with quote
davev8app wrote:
bugger am watching this lens...........................it very bad.....maybe full of fungus......so dont bid


I heard it has not only a nasty scratch on the front element, but also mirror-separation and sticky aperture blades!


PostPosted: Sat Jan 24, 2015 6:14 am    Post subject: Reply with quote
BurstMox wrote:
Quite mysterious that they continued the production of those MTO (since 1957), whereas in 1960 they created the MTOM, which is way more compact and lighter ... It also perform quite good. This MTOM never was produced in large production, only prototypes.


Actually, the MTOs (MTO-500 and MTO-1000) were only predecessors of a whole range of Soviet/Russian Maksutov's mirrow lenses that had manufactured in the production quantities (MTOM did not, as it was an experimental model only). You can see that little (and not very little Very Happy ) beauties here http://oly43club.ru/forum/index.php?showtopic=88&st=0

Hope, you will find this info useful.


PostPosted: Sat Jan 24, 2015 3:35 pm    Post subject: Reply with quote
blotafton wrote:
davev8app wrote:
bugger am watching this lens...........................it very bad.....maybe full of fungus......so dont bid


I heard it has not only a nasty scratch on the front element, but also mirror-separation and sticky aperture blades!


emphasis mine -- we all know how true that is...not!
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