Focus problem with speed graphic

**Dan Fromm** · 21-Jun-2014, 15:10

Originally Posted by tom thomas

What is the serial number of your Speed Graphic. Knowing then it was made could help determine if it should have a Fresnel installed or not.

Good idea, but there were retrofits.

**Leigh** · 21-Jun-2014, 15:32

Originally Posted by tom thomas

...You don't appear to be using a Graflex original lens, ie the Nikkor 150mm.
Could that be affecting the focal distance?

No.

You can use any lens with this camera that has a flange focal length (FFL) less than the maximum bellows draw.

Obviously for subjects closer than infinity, the FFL must be short enough to permit focusing on the subject.

- Leigh

**IanG** · 22-Jun-2014, 02:35

Originally Posted by Dan Fromm

Good idea, but there were retrofits.

Also some late models were sold without a fresnel. I'm using one (a Crown Graphic) today, I had to fit the fresnel on the outside to retain the focus register.

It doesn't help that there were Spring and Graflok backs sold with and without fresnels fo quite a few years.

Ian