Aspect ratio for Super 16mm
Posted 26 April 2011 - 01:18 PM
I was wondering if the Arri SR2 is capable of shooting in a 4:3 aspect ratio, as opposed to its native 16:9 ratio. If it is possible, how does one go about shooting in 4:3?
Thanks for any help.
Posted 26 April 2011 - 02:18 PM
I was wondering if the Arri SR2 is capable of shooting in a 4:3 aspect ratio, as opposed to its native 16:9 ratio
Actually, if I'm not mistaken, I think the original native ratio of the Sr2 gate was 4:3, but all the cameras I've seen or worked with had been converted to S16. So, I guess, if you manage to find an "unconverted" one, you can shoot "regular" 16mm in 4:3.
Posted 26 April 2011 - 02:54 PM
Another option would be to look towards older cameras which are still in good service, such as the SR1, Eclair ACL and Eclair NPR as well as the CP16 which may not have been converted but are still quiet enough for sync sound. I believe Aaton LTR-7's also came in N16mm, though i'm not 100% on that as most all Aatons I've seen have been S16mm.
Posted 26 April 2011 - 03:10 PM
Posted 27 April 2011 - 12:19 PM
Thanks again for the help.
Posted 27 April 2011 - 01:45 PM
Posted 27 April 2011 - 03:54 PM
Thanks for the replies guys. Instead of changing the groundglass (which I'm told is expensive), or renting a different camera with a 4:3 aspect ratio, how could I go about shooting 4:3 with the SR2? Anything I can do to the viewfinder or when framing the shot?
Thanks again for the help.
As a rough guide, you can use the TV safe markings on the left and right of frame. If you shoot a 4:3 framing guide centered in the 1.66:1 frame, you'll soon get an idea of where your 4:3 frame lines should be.
Or could I just block off the left and right sides of the lens with black wrap or something?
Don't bother even attempting this. The only place for a hard matte is in the gate. Just shoot the full s16 aperture, and then crop in post.
Posted 01 June 2011 - 08:09 PM
I was wondering if the Arri SR2 is capable of shooting in a 4:3 aspect ratio, as opposed to its native 16:9 ratio.
I thought that the aspect ratio of Super 16mm was 15:9? Of course close enough to the HD aspect ratio of 16:9 which is very convenient when doing HD trasnfers. Correct me if I'm wrong.
Posted 01 June 2011 - 08:18 PM
The 16mm camera aperture is sometimes listed as:
10.26 x 7.49mm = 1.37 : 1
The Super-16 camera aperture is sometimes listed as:
12.52 x 7.41mm = 1.69 : 1
However, I believe there was some variation among manufacturers.
Posted 21 June 2011 - 10:37 AM
I never got my SR upgraded to Super 16 but I thought that was one of the steps. Of course I may be splitting hairs. Re-centering the lens moves the lens a miniscule amount, but projected may lead to slight deformities in the image. Not that I would be able to tell.
And of course shooting in Super 16 mode while using the 1.33 ground glass gives one a bit of reframing room left and right if need be in digital post. So maybe re-centering is a moot point.
Edited by timHealy, 21 June 2011 - 10:38 AM.
Posted 21 June 2011 - 10:15 PM
If a print is needed, the best option is to re-centre the mount to Standard and use a Standard 16 ground glass with 1.33 markings. Some early Super 16 SRs had fixed mounts, but most are dual - you simply remove the mount and turn it 180 degrees (and move the locating pin back to top right). It's a good idea to have the flange depth and flatness checked afterwards, though.
If a print is needed, but converting the camera back to Standard is impractical, it is possible to keep the camera in Super but frame with a Standard 16 1.33 ground glass. The only issue is that the lenses will not be centred to the image area - wide angle distortions will be offset and zooms will track off to one side.