Restoring An Ansco 8x10 Commercial View Camera

[Ian Grant]

The difference, of course, is in the example you provided, the glass rests from the back on a routed lip whose T distance never changes independent of GG thickness. In my instance, the glass rests on a routed lip inside the frame and the effect T distance changes with varying glass thickness.

No, the same as yours.





Fits from the inside, so yes glass thickness is critical. It seems odd that Kodak would switch to a less accurate way of mounting

Sheet lass now is made to higher tolerances compared to 60 years ago, but even nominal 2mm can vary by +/- 0.15mm.

When film holders became International fit sizes post WW2, they were based on Kodak outside dimensions, with 5x5 the old 0.200" T registered was changed to 5.00mm / 0.197" +/- 0.178mm.

With 10x8 the T register is 6.60mm +/- 0.406mm. I'd measure that T depth register of your back. I will be improving the screen on the Specialist 3 back and will measure the glass thickness first.

Ian

 

[thronobulax]

No, the same as yours.

Sorry, I was referring to the Ansco back photo you provided.

View attachment 6639

View attachment 6640

Fits from the inside, so yes glass thickness is critical. It seems odd that Kodak would switch to a less accurate way of mounting

Sheet lass now is made to higher tolerances compared to 60 years ago, but even nominal 2mm can vary by +/- 0.15mm.

When film holders became International fit sizes post WW2, they were based on Kodak outside dimensions, with 5x5 the old 0.200" T registered was changed to 5.00mm / 0.197" +/- 0.178mm.

With 10x8 the T register is 6.60mm +/- 0.406mm. I'd measure that T depth register of your back. I will be improving the screen on the Specialist 3 back and will measure the glass thickness first.

Ian

Yeah, it's puzzling why this would be done. I now have to go look at my Graflex 2x3 GG and see how they are built/measured.