MFlenses - A new life in a digital age
MFLenses 2026

Manual Focus Lenses Forum

Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.

Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.
DiskFreeVault safely moves Mac apps and data to external storage.
Spotlight

Featured partner placement for the forum front page.

Meyer Optical 500mm mount question.
View previous topic :: View next topic  


Reply

I got this lens a while back. It is a giant. As to the mount, at first glance it is m42 but the adapters and cameras I have for it all only screw on maybe a turn and a half. Am I missing something? Is this a spotting scope maybe? It has a diaphragm. I have not used it much due to this and the fact that is too heavy for my tripods.


Reply

Sounds like it's a T-Mount. Same diameter, different thread pitch.


Reply

I agree, probably T Mount. Same 42mm diameter but different thread pitch. Don't force it!


Reply

That definitely sounds like a T thread, but has Meyer ever produced any lenses in that mount?


Reply

Jiaming wrote:
That definitely sounds like a T thread, but has Meyer ever produced any lenses in that mount?


They made lenses for Pentacon Six with interchangable mounts, like this one.


Reply

Interesting to know! I wish I could read German though Smile


Reply

Jiaming wrote:
Interesting to know! I wish I could read German though Smile


http://allphotolenses.com/lenses/item/c_1363.html


Reply

Thanks for the info!


Reply

Do you have a picture of the mount and lens itself?


Reply

mo wrote:
Do you have a picture of the mount and lens itself?


This is the same lens (different example). Mine does not have the hood but did come in a lovely leather case. As I said before it is very large guessing I would say 20 inches (~50cm) long and and likely weighs in at 4.5 kilos.

Thanks all for your help. I have an adapter on its way. I am working on a tripod system (gimbal) to use with it, I also have a Celstron 1250mm Cat to use with the tripod so it will be a multi use thing. I hope to show pics in DIY when I get it completed.