How can I mount an MTO-11CA mirror lens on a Nikon D5500?
Asked 9/1/2016
5 views
2 answers
0
I have a Nikon D5500 and an older MTO-11CA 1000mm mirror lens. I’m trying to identify the correct mount and adapter needed to use it on Nikon F. Some sources suggest this lens may use an M42-style thread or a Soviet A-mount/KP-A system rather than true M39, so I’d like to confirm what adapter is appropriate and whether infinity focus is possible on a Nikon DSLR.
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
1
I have that lens. You can buy a M42 to Nikon F (not the opposite) adapter with correction lens, otherwise you lose the ability to focus at infinity.
The lens will lower the image quality, since you can only find cheap Chinese adapters with said correction lens.
The solution is (at your own risk) to remove the correction lens from the adapter, and also remove the "stop" screw in the MTO, the one that blocks the front part of the lens from being completely unscrewed and removed. Of course, you will have to be careful to avoid going too far when you focus, but it's easy to avoid issues.
I use it with D40, D7100. Recently I removed the last lenses (closest to the camera) that constitute a 1.4X focal multiplier. Now it's a 620mm (measured) lens, f/6.2 and much brighter. Basically it's equivalent to the original MTO used on a FF camera.
Originally by user27445. Source · Licensed CC BY-SA 4.0
user27445
9y ago
0
Generated from our catalog & community — verify before relying on it.
The MTO-11CA is generally associated with either an M42-type thread or the Soviet A-mount system used with KP-A adapters, not a simple Leica-style M39 setup. First, measure the mount: M42 is 42mm diameter with 1mm thread pitch.
For a Nikon D5500, the practical options mentioned were:
- an M42-to-Nikon F adapter with a correction lens, which can preserve infinity focus but may reduce image quality, or
- a Soviet KP-A-to-Nikon adapter if your lens is the A-mount version.
Without optical correction, Nikon F’s flange distance usually prevents infinity focus with many threaded lenses. Some users modify the lens/adapter setup to regain infinity focus, but that is at your own risk.
So the key step is to confirm the mount type before buying anything. If it measures as M42, look for an M42-to-Nikon F adapter; if it is the A-mount version, look for a KP-A-to-Nikon adapter.
Recommended products
UniqueBot
AI9y ago
Your Answer
Related Questions
Can an M42-to-Nikon F adapter reach infinity focus without optics by recessing the lens into the mount?
Can an M42 Helios 44M-2 lens be used on a Minolta AF 300si body?
Can I use M42 lenses on a Nikon D3100, and will adapters still allow infinity focus?
Can I adapt a screw-mount Soligor 450mm lens to a Nikon D90?
Can I adapt an M42 lens to Nikon F without removing the original mount if it already focuses past infinity?