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View Full Version : Remove Ektar 127mm (Speed G) from it's lens board?



Athiril
14-Feb-2011, 22:38
Just wondering how you remove the lens from the speed graphic lens board to put on another lens board.

On the back it has the raised ring with three holes in it that surrounds the rear element of the lens.

Want to put it on one of the Calumet lensless CC400's I picked up today (may make no sense to transplant it but I want to play with my 'new' camera damnit ha ha).

Jon Shiu
14-Feb-2011, 23:40
One way would be to remove the three screws holding the flange in place and then rotating the flange to unscrew it from the lens. Normally, I would say you could rotate the shutter to unscrew it from the front, but there may be an indexing pin sticking out of the back of the shutter into the lensboard which would keep it from rotating.

Jon

Athiril
14-Feb-2011, 23:58
One way would be to remove the three screws holding the flange in place and then rotating the flange to unscrew it from the lens. Normally, I would say you could rotate the shutter to unscrew it from the front, but there may be an indexing pin sticking out of the back of the shutter into the lensboard which would keep it from rotating.

Jon

Sounsd like for the time being I'm better off gaffa taping it in it's board to one of the calumet boards for the time being so I can return it to the speed graphic.

John Kasaian
15-Feb-2011, 00:05
Be aware that while the 127mm Ektar is a very nice lens it doesn't have the coverage to give you any movements on a 4x5

Athiril
15-Feb-2011, 10:34
Be aware that while the 127mm Ektar is a very nice lens it doesn't have the coverage to give you any movements on a 4x5

Full tilt on a 4x5" speed graphic.
http://farm4.static.flickr.com/3491/3873640188_e523a9c395.jpg (http://www.flickr.com/photos/athiril/3873640188/)
Forrest II (http://www.flickr.com/photos/athiril/3873640188/) by athiril (http://www.flickr.com/people/athiril/), on Flickr

Jim Noel
15-Feb-2011, 10:58
Athiril,
You need to remove the retaining ring,the thing on the back with the three holes, then the lens will come off and can be put on any other board. There are no screws to remove.
The ring can be removed by driving two small nails part way through a board separated by a distance so that each will fit into one of the holes. It is not necessary to have one in all three holes. Turn the ring counter-clockwise.

Jon Shiu
15-Feb-2011, 15:19
Yes, sorry I assumed there were screws in the holes, but since you just said holes there probably isn't. Just unscrew the ring like Jim says.

Jon

tom thomas
17-Feb-2011, 16:54
Here is a similar lens with the 3 holes being described by Athiril. They are 120 degrees apart. I like Jim Noel's idea of couple nails driven into a board to function as a spanner. Could also try a couple screws in a plastic toothpaste handle that fit two of the holes safely. I'd been thinking about using needle nosed visegrip pliers, opened up to span the holes but one slip could wreak havoc.

I just realized how to make a nice tool, using a plastic toothpaste handle and some short bolts/nuts (brass?) just smaller than the diameter of the holes. Drill out holes in the handle after cutting off the brush (or keep the brush on the handle to use for cleaning gear) to match the distance between the retainer holes, secure the bolts with nuts to keep them from twisting sideways under the pressure of turning like a couple nails might do in a piece of wood.

You could predrill several holes to match the retainers for other lenses should you have more. Get another set of small bolts to use on the lens retainers that have the two grooves cut 180 degrees apart. Drill extra holes to match them. Small enough to be carried in camera kit along with a small cresent wrench to enable moving one bolt.

Tom