Arri master anamorphics on sr3

[Edith blazek]

Hey, I know what happens when you put a master prime on an sr3, but can anyone here tell me if they've put master anamorphic lenses on a 16 sr3 and if it fits or not?

[David Mullen ASC]

Sure, if the lens is PL-mount and the camera is PL-mount, then it can be put on the camera.

The image circle is more than large enough for Super16/16mm since it was designed for 35mm.

The three issues to deal — first is the fact that the smaller film format is cropping the lens image by half so you need to use focal lengths that are twice as short to get a similar field of view as in 35mm, so often you find that you can’t get very wide-angle views… a 35mm 2X anamorphic in 35mm is quite wide-angle, like an 18mm spherical in 35mm, but on a 16mm camera would be twice as tight a view, more like a 35mm spherical view in 35mm. Maybe that’s wide-angle enough for you.

The second issue is the 2X squeeze factor, which means that for a final 2.40 : 1 image, the negative area is 1.20 : 1, which is more square in shape than even the regular 16mm area let alone the wider Super16 area. So you’ll be cropping the sides of your negative image to get to 2.40 : 1 after you desqueeze.

The third issue would be the lack of a 2X desqueeze in the optical viewfinder, so you’ll have to compose and operate looking at a larger but skinny image, which might be OK (easier to judge focus that way but harder to judge composition.)

[Edith blazek]

2 hours ago, David Mullen ASC said:

Sure, if the lens is PL-mount and the camera is PL-mount, then it can be put on the camera.

The image circle is more than large enough for Super16/16mm since it was designed for 35mm.

The three issues to deal — first is the fact that the smaller film format is cropping the lens image by half so you need to use focal lengths that are twice as short to get a similar field of view as in 35mm, so often you find that you can’t get very wide-angle views… a 35mm 2X anamorphic in 35mm is quite wide-angle, like an 18mm spherical in 35mm, but on a 16mm camera would be twice as tight a view, more like a 35mm spherical view in 35mm. Maybe that’s wide-angle enough for you.

The second issue is the 2X squeeze factor, which means that for a final 2.40 : 1 image, the negative area is 1.20 : 1, which is more square in shape than even the regular 16mm area let alone the wider Super16 area. So you’ll be cropping the sides of your negative image to get to 2.40 : 1 after you desqueeze.

The third issue would be the lack of a 2X desqueeze in the optical viewfinder, so you’ll have to compose and operate looking at a larger but skinny image, which might be OK (easier to judge focus that way but harder to judge composition.)

Im not talking about any of that though it's good to consider, what I'm talking about is whether the master anamorphics share the issue the spherical master primes have in their barrel hitting the viewfinder. That is why they made the 416 after all. What I was asking and hoping for is whether the slightly slimmer designs of the master anamorphics would allow them to be used with the sr3 without hitting the viewfinder.

[Dom Jaeger]

I don't have a Master Anamorphic on hand to check, but comparing pictures scaled to have the same size PL mounts, the problematic rear section profiles and diameters look identical.

[David Mullen ASC]

11 hours ago, Edith blazek said:

Im not talking about any of that though it's good to consider, what I'm talking about is whether the master anamorphics share the issue the spherical master primes have in their barrel hitting the viewfinder. That is why they made the 416 after all. What I was asking and hoping for is whether the slightly slimmer designs of the master anamorphics would allow them to be used with the sr3 without hitting the viewfinder.

Ah, now I've learned something!  Didn't know about this issue, thanks!

[Robin Phillips]

so I dont have a lens to test this with, but if I recall if you dont need to use the optical viewfinder on an SR3, you can rotate the main arm straight up and a master prime with just barely fit. at that point you're completely beholden to the video tap, so you want to make sure you have a good one. 

but I wouldnt rely on my recollection, I'd want to test it at a rental house to be sure.