Graflex RB series B lensmount question

[203Ektar]

Hi,

I recently acquired a 2 1/4 x 3 1/4 RB series B Graflex with a 127mm Ektar. I was wondering if the lens mount size is the same in the 2 1/4 x3 1/4 and 3 1/4 x 4 1/4 cameras.

Thank you,

Mike Sullivan

[Glenn Thoreson]

It should be. The 127 Ektar was set in a number 2 Supermatic shutter. The hole size on the board is the same, no matter what you put it on.

[Oren Grad]

The lens mount of my 3.25 x 4.25 RB Series B is just about 49mm in diameter, measured across the inner edges of the screw thread.

For those who aren't familiar with the Series B cameras, they have a fixed front standard with a threaded opening for a barrel-mount lens.