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Classic Camera Repair » Archives-2004 » Do you have a Leicaflex lens, and a set of calipers? « Previous Next »

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Tim

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Posted on Sunday, November 28, 2004 - 07:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Hello,
Maybe somebody can help me.
I need some dimensions from a Leicaflex lens mount.
(metric dimensions would be helpful.)

The minor diameter of the lens flange,
dimension “A”
The major diameter of the lens flange,
imension “B”

The diameter marked “4”

http://www.hellzone.com/photos/leicaflex.gif


thank you very much,
tim

[email protected]
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Henry

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Posted on Monday, November 29, 2004 - 07:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

I can help you...have several 3 cam lenses. But I'm heading out the door at the moment...yeah, to work. Sometimes in this economy it is necessary even when one is retired!

Email me direct as a reminder and I'll get out the calipers and lenses this evening.

Henry
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David Ritchie

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Posted on Monday, November 29, 2004 - 08:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Tim, I measured my two cam lens with the following results:
A. 45.98mm
B. 48.95mm
4. 59.6mm
The above are the average of the readouts on my digital calipers. Actual reading varied as much as .02 plus or minus.
It will be good to learn what Henry gets.
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Henry

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Posted on Monday, November 29, 2004 - 07:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Let's see here...on a Leica 50mm f/2...

A = 1.811" = 45.9994mm
B = 1.929" = 48.9966mm
4 = 2.348" = 59.6392mm

Leica 35-70mm f/3.5

A = 1.811" = 45.9994mm
B = 1.929" = 48.9966mm
4 = 2.347" = 59.6138mm

The only difference I found between the two was .001" on the R dimension.

Have fun.

Henry
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Henry

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Posted on Monday, November 29, 2004 - 07:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

So to compare David's and mine...

A = 1.810" for David's
B = 1.927"
4 = 2.346"

David's is about .001-2" smaller everywhere. This could even be the difference in our two dial calipers.

Henry
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Tim

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Posted on Tuesday, November 30, 2004 - 08:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Thanks so much for all your help..
I do have one more question regarding
this... Is the actual Top Dead Center (TDC) of the lens at 12:00 in the picture, or is it rotated.. (if so, CW, or CCW, about how much?)
Thanks again,
tim
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Henry

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Posted on Tuesday, November 30, 2004 - 05:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Yep, pretty well looks like TDC to me.

Btw, what are you doing? Why you need these dimensions?

Henry

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