Grahex #2...f/4.7, 135mm...4x5 Speed Graphic

[Dean Taylor]

hello

A beginner asks about removing the lens from the lens board...as you know, the back of the lens (inside camera, behind lens board) has two notches, which appear to require a tool of some type (a 'fork' arrangement)...

Does the lens simply unscrew from the Graphex #2 shutter, or, is there a 'latch' (lack of better term) to depress beforehand? Initial, tentative attempts to undo it found quite a bit of resistance...we balked at applying more force until we checked with pros...

thank you

Dean Taylor

 

[Jon Shiu]

To remove the lens from the lensboard, you need to unscrew the lockring from the back of the board. Usually, you use a adjustable spanner to unscrew it, but you could possibly improvise.

It would be possible to unscrew the shutter from the lockring, but usually there is a pin sticking out the back of the shutter into a indexing hole in the board to keep it from rotating. Sometimes the pin has been removed, but if the shutter doesn't rotate best not to force it.

Jon

 

[Dean Taylor]

APUG and Jon--sincere thanks for helping out...

yes, there is an indexing recess for the pin...

armed with this new information, we might proceed now without needless anxiety...cool

Best,

Dean

 

[bdial]

FWIW, I've had poor luck improvising spanners, they are available from various sources, here is one of several;
http://www.edmundoptics.com/lab-production/general-tools/spanner-wrench-set/1457/
Other places that I am familiar with are Micro-Tools, and SK Grimes