Somewhere last year I stumbled upon a lot of Delrama 8 CP 1,5 lenses, made by the Dutch company Old Delft.
A tiny fixed focus 1,5x anamorphic for 8mm camera's. It uses curved prisms and mirrors instead of cylincrical lenses. I bought them with some diy projects in mind...
Sadly, the Delrama's are in pretty bad shape, as you can see. It isn't fungus, it is the silver on the mirrors that is detoiriated. You can't clean it, you'd have to redamp the mirrors to fix it. I never really looked into it, since it seems an expensive process.
So they have been lying around here for a while... Today I decided to experiment a bit more with them. The Delrama's have a screw mount that is exactly the same size as a C-mount lens. I don't have any lenses where I can fit it onto directly, but since it's so small and light, I decided to sacrifice a simple plastic lens cap from one of my Minolta's. I cut a hole into it, just large enough to fit the filter thread. It holds the Delrama pretty well.
On the last picture it is attached to my Minolta 58mm f/1.4. It seems to need a pretty long lens. With the 58mm and the GH2 it works fine, but on my 35mm it's like looking trough a tunnel.
I also 'modified' a Computar 25mm f/1.8 C-mount lens. I superglued a C-mount extension ring to the inner part of the lens barrel (that doesn't move while focusing). I loosely screw the Delrama on top of that, align it and then tighten it with the little clamp.
This results in a tiny anamorphic combination, but it only works in EXTC. Also, I think I'll have to modify the Computar lens, since it doesn't quite focus to infinity. It's a funny little combination though.
I took the Anamorphic Lens Cap and the Computar Anamorphic out for some test shots:
In hindsight I should have used a profile with more contrast, this was all shot at smooth -2-2-2-2. The damaged Delrama's probably make the image even flatter. But the light was already pretty flat.
I have no idea how it would compare to a Delrama in pristine conditions, but even with the damaged mirrors these liltle ones still look usable in some way. It is nice to be able to rack focus them.
I'm not sure what the minimum focus distance is. I read 4 meters somewhere, but I think it's closer to 2 meters. I also tried holding some diopters in front of the lens, with a +1 diopter I could focus at 0,5 meters.