----- Original Message -----
From: "Chrome Dome" <crdome@lycos.com>
>
> Just an idea, you might try placing one of those sheet plastic pseudo
statically adhesion lenses used on the rear windows of motor homes to help
drivers see what is
> behind them. Besides magnifying, I think they amplify light too. I don't
know how much distortion they create. Take your Finley to an RV dealer. You
would need to
> buy one to try it out.
Office supplies stores also carry the same, only intended as "fresnel
magnifiers" for reading, couple of bucks each sheet. Most view camera users
have a more expensive version of the same as integral part of the ground
glass assembly. It helps a lot with my G-Claron f/9 for instance, which is
difficult to focus otherwise. BTW, the fresnel lens doesn't really amplify
light. The ground glass disperse light in all directions, a small amount
in the direction of our eyes, that is why we can see an image on the GG, if
we had a clear piece of glass, no light is dispersed and that is why we
don't see any image on it. A fresnel lens refracts a lot of that dispersed
light and send it toward our eyes, that is why the image looks brighter and
gives the appearance of light amplification.
> Some argue that Renoir's deteriorating vision made him a better painter.
It'd be nice if my deteriorating vision made me at least an OK photographer!
:-)
Guillermo
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Received on Fri Feb 18 09:03:50 2005
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