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what kind of len is that ?


Kcwong

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It is one of the 100 Screw Mount Compur Summicron f:5cm (50mm).

 

Compur : Internal leaf shutter.

 

Designed to offer a higher flash synchronisation.

 

100 is a maximum. Other source say 58 ex.

Edited by Leicaiste
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Barnack Leicas had 1/30 sec for flash time, for some use this might be too long.

So Leitz decided to create this lens using 1/100  & 1/200 sec for flash use.

some additional info:

http://www.leica-historica.de/VIDOM93_1.pdf

 

raaaaaaaaaaare item asking 5 digit price!

http://collectiblend.com/Cameras/Leitz/Leica-IIIg-with-Compur-Summicron.html

http://www.auction2000.se/auk/w.Object?inC=WLPA&inA=20130930_1754&inO=32

 

Thomas

Edited by duckrider
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But I have another question: what is the piece mounted on top of the shutter button?

Thank you!

Compur-Summicron mounted You have to open two shutters:

first focal plane of the camera, now in the second step compur opens & closes, now the camera's focal plane shutter has to be closed.

 

All this needs to be coordinated in right chronology.

 

For this the arm on shutter button is for.

 

The rarest part -often missed when a Compur-Summicron is offered!

 

Thomas

Edited by duckrider
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Compur-Summicron mounted You have to open two shutters:

first focal plane of the camera, now in the second step compur opens & closes, now the camera's focal plane shutter has to be closed.

 

All this needs to be coordinated in right chronology.

 

For this the arm on shutter button is for.

 

The rarest part -often missed when a Compur-Summicron is offered!

 

Thomas

thank you, Thomas

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