MTO 500 f8 + Nikon D200??

[inombrable]

I have recently got my hands into one of this mirror lenses but i am having problems mounting it in my camera (D200).

I have seen on the web (can't remember where) pictures with it and mounted on a D300 (almost the same camera) so i might be doing somethin wrong, i can mount the lens but only with the m42-nikon adapter with infinity element, i would like to be able to use the adapter without glass and apart from that reach infinity, is that possible?

Hope is not very confusing

Thanks

[iangreenhalgh1]

No, sadly not. M42 register is 45.42mm, Nikon, from memory is 46.5mm. Therefore, without shortening the lens barrel by 1.08mm you can't reach infinity.

M42 and Nikon are a bad mix, sorry to say.

[inombrable]

Thanks Ian, I know about m42 and nikon but i was also wondering if there was a way of adjusting focus to infinity as i do with my tamron 55B.

In fact the first issue is that with the glasless adapter it can't be mounted because it hits the flash !!!

[iangreenhalgh1]

Sorry, was teaching you to suck eggs their. I don't know the MTO, maybe it would require a lathe to remove some metal from the back of it, it needs some Nikonian with experience of this issue to shed some light I think, or maybe someone who is familiar with the MTO lens. Good luck, hope you get it sorted, I hear this lens is a very good one.

[inombrable]

yes i found some info on nikon italia forum (don't know italian) but apparently is a matter of taking out three small screws and adjusting from there, maybe tomorrow i will try. Thanks ian.

If anyone has done it, i would apreciate the help !!

[iangreenhalgh1]

Perhaps Orio could be of assistance with deciphering the Italian forum?

[M. Valdemar]

I'm almost certain the MTO's are T-Mount lenses. Just unscrew the T-Mount and replace it with a Nikon T-Mount.

Don't try using an adapter.

Read this thread too:

http://www.fredmiranda.com/forum/topic/901892

[inombrable]

Hey Valdemar, i thought the same about the mount (that is why i decided to buy the lens) but my several T-Nikon rings do not fit the thread on the lens and my M42-Nikon adapters do !! Anyway i will check again


Ian, the idea about Orio is a good one, he might be able to help with the translation. Thanks

[martyn_bannister]

See this thread on the trick to dissemble the 1100mm version. IIRC the T-Mount fits onto a non-standard spigot and it is possible to mount one on a Nikon. if you get the right T-Mount.

Good luck!

Some samples amongst THESE

[peterqd]

[iangreenhalgh1]

Er, I wasn't suggesting it should be done, just saying that it might not be possible without butchery.

[inombrable]

I cheked the mount again and is definetely an M42 native and has an m42-T adapter on it.

Martyn thanks for the tip in fact the focusing is a bit bumpy so i will need to fix that.

So i think the only option will be to try to adjust the focusing helicoid to get infinity. Unlucky i am moving out and all my tools (not many) are in a box (i hope) so i will need to wait for the moment.

peter, no butchering of mount or lens instead a good cleaning and re lube are on its way!!!

[memento]

Russian mirror lenses are NOT T-mount !!! They are M42. It looks identical to T-mount at first view but the threads and register distance are different.

Even though there is a lot of problems with Nikon DSLR and the register distance when using lenses with other mounts, this should normally NOT apply to these mirror lenses because their hard stop on the focus ring is a little bit "past" infinity. So, if you just get an M42-Nikon adapter without lens, you normally should be able to use the lens without any problems.

The only remaining issue is the one with the flash housing of some cameras ..... the only solution that I am aware of, is to add a short extension ring of some sort and to completely remove the hard stop at the focus ring. Thomas

[Attila]

[inombrable]

Hey Thomas thanks for the info, i will do that this holiday.

Thanks all for the help and have a happy christmas!!!!

[Farside]

I had exactly the same problem when I wanted to fit my Rubinar 300 mirror to my Pentax - the flash overhang fouled the lens body.
I found that site about adjusting the infinity stop and the three screws under the rubber collar. The 300 was the same setup so I did just that, mounted it on a glassless M42 extension and carefully set infinity (or just a touch past it) while focussing on a telegraph pole a mile away.
It works great, the only drawback (if you can call it that) is it now has the M42 extender as a permanent attachment to the lens, so I don't ever take that off and use it for anything else. No big deal.
I put up a thread about it on here a couple of years ago - if you search under Rubinar 300 you might find it.

<edit>
Here it is...
http://forum.mflenses.com/adjusting-infinity-on-rubinar-300-4-5-t17773,highlight,%2Brubinar+%2B300.html

And a sample... (click on for larger)