[LargeFormat] roll film back

[Ted]

> I thought 56mmx 72mm was the right standard size of the image. Your ground
> glass wants to be bigger overall so you can mount it by its edges. Mask down
> to 56x72 or draw lines on the g.glass.  Can't you get hold of a used RB
> screen?  Philip

Philip,

The focus screen for an RB 67 is Square 7X7 CM.
I machined a Ground Glass holder today out of Aluminum on the milling
machine. I made the place for the Ground Glass .125" larger than the
hole all the way around.

Ted

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