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super16mm lens mount


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#1 Robert Glenn

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Posted 04 October 2005 - 04:34 PM

It's a basic question, but the conversion of regular 16mm to 35mm mountwise just means recentering the mount 1mm to the left, or is it the right? This is if you're behind the camera. Also is it exactly 1mm?
Thanks
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#2 Robert Glenn

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Posted 04 October 2005 - 04:56 PM

It's a basic question, but the conversion of regular 16mm to 35mm mountwise just means recentering the mount 1mm to the left, or is it the right? This is if you're behind the camera. Also is it exactly 1mm?
Thanks

sorry i meant regular 16mm to super16mm
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#3 Nathan Milford

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Posted 04 October 2005 - 06:31 PM

Facing the gate, the super 16 area of the gate expands to the left (opposite of the claw). It follows that the mount will also move to the left. I'm not sure if it's 1mm exactly. I'm not at my bench so I don't have access to my notes, but I'd wager you're moving it somewhere between 1.07 - 1.25 mm. It really depends on what the camera manufacturer decided was the 'real' Super16 aperture. They vary by as much as 250 microns between manufacturers.
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#4 Robert Glenn

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Posted 04 October 2005 - 06:49 PM

Facing the gate, the super 16 area of the gate expands to the left (opposite of the claw). It follows that the mount will also move to the left. I'm not sure if it's 1mm exactly. I'm not at my bench so I don't have access to my notes, but I'd wager you're moving it somewhere between 1.07 - 1.25 mm. It really depends on what the camera manufacturer decided was the 'real' Super16 aperture. They vary by as much as 250 microns between manufacturers.

thanks nathan!
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#5 Dimitrios Koukas

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Posted 05 October 2005 - 03:12 AM

thanks nathan!


Remember to change the gate too ..... ;)
Dimitrios Koukas
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#6 Stephen Williams

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Posted 05 October 2005 - 03:58 AM

but I'd wager you're moving it somewhere between 1.07 - 1.25 mm. It really depends on what the camera manufacturer decided was the 'real' Super16 aperture. They vary by as much as 250 microns between manufacturers.



Hi,

You would win! I have 1.13mm in some notes I have. As you say it varies by manufacture.

Stephen
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#7 Nathan Milford

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Posted 05 October 2005 - 08:56 AM

Hi,

You would win! I have 1.13mm in some notes I have. As you say it varies by manufacture.

Stephen



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#8 Robert Glenn

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Posted 05 October 2005 - 04:29 PM

thanks again guys..... I'm trying to make a dual rod support for my NPR and my mattebox has no horizontal or vertical adjust, so precision is important! A 1.1mm offset should get everything centered pefect I think.
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