LTM to M adapter

[nebraska]

Is there a method of preventing the lens from unscrewing when removing lens with LTM to M adapter from M body?

 

[Tom A]

Not really a method as such. Just screw it in tight. Biggest problem usually occur when you try to remove the adapter from the M-mount. The older back caps (and the ones for Zeiss ZM lenses have these little "prongs" that can be fitted to the adapter and used to undo it.
I you dont have to much worry about your nails - you can also grab the lens and put a nail into the "opening" of the adapter and push it towards the unlock position. I find that I usually unscrew the lens and use the back-cap to undo the adapter though and then just screw the lens back on. Not that fast a process though.

 

[nebraska]

LTM adapter

LTM adapter

Tom,

Thank you for your helpful suggestions.

Karl-Heinz

 

[ehoward]

Another LTM to M question

Another LTM to M question

I have several LTM lenses of various focal lengths. Is there a single adapter for them, or must I have different adapters for each focal length.
Regards, Elbert Howard

 

[RobVinc]

I have several LTM lenses of various focal lengths. Is there a single adapter for them, or must I have different adapters for each focal length.
Regards, Elbert Howard

This depends on your cam.
Iif it is a Leica (not sure about the Zeiss Ikons) the adapter selects the frame in the viewfinder.
With a Bessa or R-D1 you can use one adaptor for all lenses, as you have to select the frame manually.

 

[menos]

I test a lot of LTM lenses with different mounts at the local camera shops before buying.
This is therefore a usual thing, to deal with (how to best unmount a LTM lens with adapter).

Here is what I do:

I never squeeze the LTM adapter manly tight, as possible on the LTM lens.
If all contact surfaces are plane, clean and properly finished without tents and damages + the thread is good, it is absolutely enough, to screw the adapter on hand tight ("handfest" - "Nach fest kommt ab!" ;-) )

When unmounting the adapted lens, I first push the lens release button and hold it with the left thumb.

I then grab the lens base with my right hand and unmount it.

If I unscrew the lens from the adapter, I simply turn the lens back a bit tighter and repeat.

Don't fumble with unscrewing the LTM lens and trying, to unmount the adapter.

 

[umcelinho]

The older back caps (and the ones for Zeiss ZM lenses have these little "prongs" that can be fitted to the adapter and used to undo it.

Whew. Hadn't thought about that, I'm glad I still had one of the old caps here, I had an adapter badly stuck into a rear cap. Thanks, Tom!!