Arthur Benoit Lambrecht Posted February 25, 2014 Share Posted February 25, 2014 Hey! I'm looking for some information on a camera that I bought some time ago. This is an Arriflex and it serial number is 1828. Someone can help me to identify what model is it? Beause I need to know the shutter's apperture... Thanks for help! Link to comment Share on other sites More sharing options...
John Holland Posted February 25, 2014 Share Posted February 25, 2014 Is it 16mm or 35mm ? It must have something on it to indicate what model it is . Link to comment Share on other sites More sharing options...
Arthur Benoit Lambrecht Posted February 25, 2014 Author Share Posted February 25, 2014 It's a 35mm camera, I think the angle is about 60°, do you think it's possible? Link to comment Share on other sites More sharing options...
Premium Member Dom Jaeger Posted February 25, 2014 Premium Member Share Posted February 25, 2014 The very first Arriflex 35 had a bowtie mirror with a 120 degree opening, which would mean two 60 degree gaps. Is yours like this: http://www.cinematography.com/index.php?showtopic=53764 Link to comment Share on other sites More sharing options...
Arthur Benoit Lambrecht Posted February 25, 2014 Author Share Posted February 25, 2014 ok, thank you for this interesting topic that i didn't find before. So my camera is a model 1, and it time exposure is 1/144 at 24 fps. Thank you to having answered! Link to comment Share on other sites More sharing options...
Phillip Mosness Posted February 28, 2014 Share Posted February 28, 2014 (edited) Looks like it's still 1/48th according to these folks but maybe they're talking about later models with different shutter angle http://cinematography.net/edited-pages/Can%20someone%20explain%20butterfly%20shutters%20%20.htm Edited February 28, 2014 by Phillip Mosness Link to comment Share on other sites More sharing options...
Premium Member Dom Jaeger Posted February 28, 2014 Premium Member Share Posted February 28, 2014 The first Arri 35 had a shutter angle of 120 degrees, so the exposure time is 1/72 sec at 24 fps. The butterfly shutter spins at half the rate of the pulldown cycle, so each 60 degree gap exposes one frame every 180 degrees of shutter. Link to comment Share on other sites More sharing options...
Arthur Benoit Lambrecht Posted March 3, 2014 Author Share Posted March 3, 2014 Yes, you're right, I made a mistake! Because the time takes the shutter for one cycle is not for one but for two picture (1/12 sec). Thank a lot! Link to comment Share on other sites More sharing options...
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