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any information about this lens?
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PostPosted: Wed Apr 26, 2017 7:31 am    Post subject: any information about this lens? Reply with quote

The only clue on it is writing www.pmspms.com S 0027 which is lead to nowhere.
I guess it's a projector lens. it has green coating. I measured approx. 70mm and f around 2,8 or f3



sample with NEX


Anyone can give me light?
Thanks


PostPosted: Wed Apr 26, 2017 7:18 pm    Post subject: Reply with quote

A photo of the letters & numbers may help us; the typeface/font used can be a clue.


PostPosted: Thu Apr 27, 2017 12:07 am    Post subject: Reply with quote

There is definitely something Tamronesque about that visible element... did they make weird stuff for projectors and the like Question


PostPosted: Thu Apr 27, 2017 8:53 am    Post subject: Reply with quote

LCD projector lens I guess


PostPosted: Sat Apr 29, 2017 5:29 am    Post subject: Reply with quote

visualopsins wrote:
A photo of the letters & numbers may help us; the typeface/font used can be a clue.

Only this sticker


PostPosted: Sat Apr 29, 2017 12:42 pm    Post subject: Reply with quote

looks pretty industrial. the website redirects to a phishing site. is it on the right way around? It looks reversed to me. Maybe some kind of air plane surveillance/spy camera lens?


PostPosted: Sat Apr 29, 2017 1:40 pm    Post subject: Reply with quote

D1N0 wrote:
looks pretty industrial. the website redirects to a phishing site. is it on the right way around? It looks reversed to me. Maybe some kind of air plane surveillance/spy camera lens?

That's exactly what I thought and seller, if i do that it will be macro only.
It has blades aperture, closed when focus ring set on farthest and open when it set on closest distance.
Here's one sample again wide open


PostPosted: Tue May 02, 2017 2:19 am    Post subject: Reply with quote

update
#1 the blades


#2 blades fully closed


#3 blades little bit closed


#4


#5


PostPosted: Tue May 02, 2017 7:33 am    Post subject: Reply with quote

Hmm, no LCD Projector lens, those do not have an iris.
Some sort of copying / relay lens possibly, would explain
why only macro.


PostPosted: Tue May 02, 2017 8:01 am    Post subject: Reply with quote

not only macro, Smile
#1


#2 crop