DIY anamorphic lens

lolo

hello, surfing on the web i find this article

http://www.zuggsoft.com/theater/prism.htm

wich is a DIY version of this:

http://www.google.com/products/catalog?q=anamorphic+lens&hl=en&safe=off&client=safari&rls=en&prmd=imvnsl&resnum=3&um=1&ie=UTF-8&tbm=shop&cid=13391610980519609452&sa=X&ei=H5ZuTqKrF9O4tgfLprTOBQ&ved=0CE4Q8wIwAA#ps-sellers

has anyone tried to put an anamorphic lens for a proyector into a camera lens?

starstuff

Oh I remember reading that page a few days back. I believe it should be entirely possible, think I'm gonna buy a few clean prisms and try it out for myself :-)

A mount shouldn't be too difficult once the desired effect is achieved?

Also worth a look is this filter:
http://www.vid-atlantic.com/cinemorphic.html

Albeit it doesn't strech the image...

starstuff

Do you think it is a requirement the prisms are wedge-shaped? Any flat/wide enough shape should do the trick, no?

lolo

well i think it has to be wedge-shaped in order to be a prism,
but what do you mean by flat/wide?

...but either way i think you can take the glass to an optic store and ask for them to shape the glass as desired,

and also as it says on the article that there are some award plaques made of glass that have the desired shape, so you can ask also in a trophy store if they have any wedge-shaped prism.
like this ones:
http://www.evright.com/showproduct.asp?P=CB8A
http://www.massillonplaque.com/product-detail.php?templateid=4&productid=85

please come back here and post your results :)

starstuff

@lolo

Well obviously wedge-shaped, my mistake. What I meant was that I'm having a hard time finding prisms that are large enough for this purpose. Since I live in Germany those links are a bit out of reach. I will try and see if I can get some blank trophy pieces.

fatpig

i fear that if you use parts not designed for optical purpose, your image will be anamorphic, but also very unsharp and distorted. lets hear if you get results! :)

lolo

@starstuff
hahah i just made a quick search on google haha looking

Glastrophäe (thanks to google translator) in germany

http://www.helm-pokale.de/glastrophaee-hollie-c-817_1929-6.html?sessID=n2r189949b6jr4sd46r153gjvthj7h52

these are at 29 euros, but i think you could probably find them cheaper as you speak german without the help of google hahahahhaha greetings :)!

starstuff

@lolo
LOL, I searched for an hour and couldn't find something like that, funny!
It's all about the keywords...I used different ones, not the ones that are the most obvious :D

@fatpig
I fear that too but meh, worth a shot to see where this could take us. I'm more worried about reflections, seeing as those glasses are not coated but for that price I'd be happy to experiment :)

B3Guy

I was thinking of simply shooting a lightly convex mirror, combined with a flat mirror to de-flip. thoughts?

starstuff

I also found these with regard to optical purposes:
http://www.opticalprismsuk.com/category/WEDGE__PRISMS,l.html

They optionally come with an anti-reflection coating, not sure about the sizes though, if they'd suffice.

lolo

@starstuff hahah yeap, funny hahahah

well, about the reflections, that may also turn into an aesthethic of his own if we are lucky :)

or perhaps placing some of those cheap ebay circular polarizer filter in between the pieces and in front of the two prisms will cut those reflections into the real lens

lolo

@starstuff well haha your link looks more promising :-) hahahah

lolo

@B3Guy that should probably work, but i don´t know how the focus will be, i´m mean
? can you focus to the target from the image
or, you have to focus to the flat mirror
or you must focus into the convex mirror (btw where do you get a convex mirror?)

B3Guy

IDK where to get one. It's a mirror. It reflects. you don't focus on the mirror, you focus "thru" it to the subject.

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