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Carsten, thanks so much for the information. I have printed out the scale you provided in the link, after sizing it in photoshop. Looks like it will work just right.
My lens is the black version,...

Thanks a bunch Dan. I am anxious to play with it.
I did measure the length of the lens in both old and new mountings and as best as I could tell, it is the same length. I will try to get a more...

I am thinking I may have to just try Jon's suggestion and follow the instructions in Simmons book. I keep getting confused.

Dan, I held the lens out at arms length, front of the lens facing me. ...

Thanks Dan, will play with it and do some figuring.

Jon, I have tried to screw in 5 of my tapered cable release and they will not catch. The threads on the cable releases are only on the tapered...

Jon, I have tried to screw a standard tapered cable release into this thing and it will not mount. The opening is visibly larger than the cable release and the inside is not tapered like the cable...

Jon, thanks. I have the book and found the instructions (BTW, thanks for the lens/shutter :) )

Dan, the blades are visible when I open the aperture to f/4.5. When I go beyond f/4.5, they just...

I finally mounted my 15" Walle Tele Raptar into a Betax #4 that had 210mm Velostigmat cells mounted.

So, the shutter is f/4.5 - f/64. The Raptar was f/5.6 - f/32. Any ideas on how to determine...

Al, the chart indicates that the #4 shutter has a thread diameter of 62mm, which is the thread diameter of the lens (I measured it last night). So, looks like your's is a #4. I am looking for an...

Al, I just mounted mine on a lens board and put it on my 8X10 and it will not cover the format at infinity (I just look through the cut-out corners of the ground glass and can't see through the lens...

Thanks John. For testing I usually just make a lensboard out of matte board and mount the lens on what ever camera I want to use it on. I just now held it inside the front standard of my 5X7 camera...

Thanks for the in-put and images John. Is yours the shuttered version, or barrel version? Apparently they came both ways. If shutter, what shutter is yours?
I read that it will cover 5X7 at...

Me Lady just discovered this lens amongst some darkroom gear that was her late fathers. It's mounted on a Graflex lens board. I would like to play with it as a possible portrait lens for 5X7. I...