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Tair 11 133mm M39
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PostPosted: Wed Jan 02, 2008 10:32 pm    Post subject: Tair 11 133mm M39 Reply with quote


PostPosted: Wed Jan 02, 2008 10:47 pm    Post subject: Reply with quote
Also very nice...
This is a rangefinder lens?


PostPosted: Wed Jan 02, 2008 10:49 pm    Post subject: Reply with quote
No, SLR around 1950..
http://www.mflenses.com/gallery/v/russian_lens/tair/tair-11_133mm_f2_8_m39/


PostPosted: Thu Jan 03, 2008 5:30 am    Post subject: Reply with quote
I just got one (for less than $15) and am waiting for my 39/42 adapter to arrive. Thanks for the encouraging samples


patrickh


PostPosted: Thu Jan 03, 2008 8:11 am    Post subject: Reply with quote
Your welcome!


PostPosted: Thu Jan 03, 2008 9:50 am    Post subject: Reply with quote
I like that shot a lot. Smile

Looks a nice lens. If ever you see one in a Nikon mount give me a shout Wink


PostPosted: Thu Jan 03, 2008 9:59 am    Post subject: Reply with quote
Use with an M42 adapter on your Nikon body, I took these pictures with Nikon D50 don't need to look always infinity support especially at a 135mm lens. On Nikon body this lens will be a great portrait lens or general purpose short tele-photo lens, effective focal length will be somewhere around 85-100mm on a Nikon body.


PostPosted: Thu Jan 03, 2008 1:38 pm    Post subject: Reply with quote
Attila wrote:
Use with an M42 adapter on your Nikon body, I took these pictures with Nikon D50 don't need to look always infinity support especially at a 135mm lens. On Nikon body this lens will be a great portrait lens or general purpose short tele-photo lens, effective focal length will be somewhere around 85-100mm on a Nikon body.


Attila, I guess the effective focal length will be around 200mm at a Nikon DSLR and 133m at a Nikon film cam.


PostPosted: Thu Jan 03, 2008 2:05 pm    Post subject: Reply with quote
No, because camera register distance is longer than lens register distance, effective focal length will be shorter , believe me I used it. What you say that is opposite way when lens register distance longer than camera register distance.


PostPosted: Thu Jan 03, 2008 2:47 pm    Post subject: Reply with quote
Attila, I am referring to the crop factor not the register distance.


PostPosted: Thu Jan 03, 2008 4:44 pm    Post subject: Reply with quote
Attila wrote:
Use with an M42 adapter on your Nikon body, I took these pictures with Nikon D50 don't need to look always infinity support especially at a 135mm lens. On Nikon body this lens will be a great portrait lens or general purpose short tele-photo lens, effective focal length will be somewhere around 85-100mm on a Nikon body.


Thanks - I might at some point if I can't find a Nikon Mount version (assuming any were made, and you never know with Soviet optics what's available in odd mounts Smile ). I frequently just carry the one lens and found not having infinity on the Trioplan a little limiting in these circumstances.


PostPosted: Thu Jan 03, 2008 4:52 pm    Post subject: Reply with quote
LucisPictor wrote:
Attila, I am referring to the crop factor not the register distance.


I this case crop factor is doesn't matter. Register distance lot more impact how can use a lens on Nikon body than crop factor. Put a range finder lens to your Canon body and see what is impact more crop factor or register distance.


PostPosted: Thu Jan 03, 2008 8:20 pm    Post subject: Reply with quote
The difference in register distance of a RF lens and a SLR is much bigger than the difference between a M42 film SLR and a Nikon DSLR!
Of course, register distance is essential when I put an RF lens at my Canon (and I have done that, remember?)

But Attila M42 has a register distance of 45.5mm, Nikon (D)SLRs have 46.5mm. This little difference only causes that any M42 lens will not focus on infinity. It does not really influence the effective FoV.
It is the smaller sensor that does that.

Compare: Canon DSLR 44mm, Leice Thread Mount 28.8mm - now that is a considerable difference. This will turn a 50mm LTM lens into a "65mm long" lens at a Canon film EOS and into a lens with the FoV of a "104mm" lens at a digital EOS.

Thus, a 135mm M42 lens, will give the Field-of-View of a 200mm lens at your Nikon DSLR.


PostPosted: Thu Jan 03, 2008 8:23 pm    Post subject: Reply with quote
Carsten , have you ever used this lens on Nikon ? I did.


PostPosted: Thu Jan 03, 2008 8:43 pm    Post subject: Reply with quote
No, I haven't, but even this lens has to follow the laws of physics and maths, hasn't it? Wink

Perhaps you can take a photo with this lens at your Nikon DSLR and then compare this photo with the view through the viewfinder of a 85mm or 100mm lens at a film cam. If your theory is right, it must be similar.

I think that it would rather look like the view of a 200mm lens on a film cam.

Do you have the chance to do that test?

If you are right, Attila, please somebody explain it to me, because then I do not understand how that is possible. But I am willing to learn...
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