[photo-3d] Re: roll curl

["John Goodman" <jgood@xxxxxxxx>]

Bob Maxey wrote:

> Film with a curl is problematic in that it is not flat, and
> if mounted in mounts without glass, you can end up 
> with images that are not as sharp as they could be.

Even after hanging a roll with a heavy weight for a day or two, 
I've had chips start to curl in a sorting box before I mounted 
them all. I think humidity must be an important factor? Isn't 
there differential expansion and contraction between the 
emulsion and base according to the relative humudity? I've 
mounted curly chips in glassless RBTs (they're held flat when I 
set the window), but when I've undone such mounts, months 
later, the chips just sit there flat as can be. I keep slides in de-
humidified storage near 50% RH, so perhaps they just relax 
over time.

[re Spicer corners]

> Actually,  Bill Gates will soon rewrite all stereo mount
> specifications and they will be round. 

Like the old joke about how many of Bill's minions (or MS 
engineers) does it take to change a light bulb?

Answer:  None! Gates just declares darkness the new 
standard...

John Goodman