8 x 10, 240mm lens

Sal Santamaura said:

I have a 250mm f/6.7 Fujinon W as well as a 240mm f/9 Germinar W in Copal 1. Is that the Germinar you're referring to, or do you really have a 240mm Apo-Germinar? According to Arne Croell's article

http://www.arnecroell.com/docter.pdf​

even the Docter infinity image circle specification (which he questions with respect to whether it's sharpness- or merely illlumination-based) of 280mm for a 240mm Apo-Germinar wouldn't cover 8x10.

My pristine sample of the Fujinon is, of course, brighter for composing/focusing, but the Docter Germinar W has similar coverage when stopped down to f/32 or smaller, and it's sharper than the Fujinon. Usual caveats about sample variation apply.

Click to expand...

TheFlyingCamera said:

I thought I replied to this earlier but I don't see my response, so I'll reply again. I have the 240 Germinar-W. I can say from personal experience that I've used it on my Canham 5x12 and applied significant front rise without running out of useable image circle.

Click to expand...

Ian Grant said:

Post #9 you said it was the "Holy Grail" but it's a bit later you say you use one.

The other lens being missed is the 240mm f9 Apo Ronar, I have one missing the front cell (I bought it for the Copal #1 shutter).

Ian

Click to expand...