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Matte Box homemade Donut ? Where ? Or ...

V

Vincent Thomas

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All right, first, im someone who is more confortable in doing image and writting then being a camera technical guru. So please be indulgent of my lack of experience here.

I about to buy a matte box, a tanguerinebright viv and at the moment, i don't own a full set of cinelens with a unified front diameter liek the zeiss cp2 .
in order to save money i was advised to build a home made donut neoprene rings to adapt my different lens (Contax zeiss 21mm, 85mm, Leica Summilux , hasselblad CFI and...)

Any suggestion where i could find one already made which could fit the tanguerine mattebox (rear housing is 150mm) ?
Or what about trying to unified the front diameter of my actual lens to a certain diameter and buy a 150-114mm clamp on rings for example?

Is there any online database which could list of the front diameter of all the lens? I found difficult actually to get this kind of information...
Are the rokinon cine lens unified? If yes, in which diameter?

Thanks for all

vince*
__________________________________________________________
Vincent Thomas
VFX Supervisor / Lead Artist / Director & Cinematographer
http://fr.linkedin.com/in/vincentthomas
http://www.stranger-than-paradise.book.fr/
 
You can buy them at a place like film tools or b & h or make them from mouse pads. I've made quite a few from mouse pads. Just make the circle the max you can for the size of the pad and then make the inner circle smaller than the lens size. It should be a snug fit so it will mold forward to the matte box.
 
Just use mouse pads! We get ours from Melrose Mac which are already cut into a circle, and they are about 9mm thick. They give em away free! Then use a sharpie to draw the outline of your lens front of choice . Take a razor blade and cut the circle.

Boom Instant donut
 
When in doubt mouse pad it out!!! I buy like 5 or 6 cheap ones at walmart for like 3 bucks each every time I have a shoot with rented lenses. The best part is you can reuse them as well!!!
 
Or defile an old wetsuit
 
+ 3 on the mouse pads, but get thick ones.
 
Just order the desired thickness and size piece of neoprene you want. It's cheap. Cheaper that way than cutting up a $10 drum pad... Well, it should be, especially if you need to make a few of them. Cutting up an old wet suit would work I guess, but that could be a bit scummy too... I don't know if I like the mouse pad or drum pad approach, they often have extra sticky rubber backing on those... Mousepads are usually common and free though -- It goes through phases, not so common lately with the prevalence of touch pads, but there were times in the past where my tradeshow swag-bags would runneth-over with mouse pads.
 
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