to cine lens, or not
Posted 07 January 2011 - 10:19 AM
So my dilemma is do I convert them to PL mounts, get an adapter and use them with the 7D since I already own them and they are intended for cine use (focus especially), or is the conversion and rig necessary to use them not worth it? Are the optics of these older cine lenses comparable with modern Canon lenses intended for this camera?
If I didn't already own them, this would not be a difficult decision. I'm thinking that with the right support, rods, etc., I could save money and have a setup that works well for filmmaking. On the other hand, getting them to work on a 7D may be a kluge, and maybe they're lame compared to todays "L" lenses in optical quality, ease of use. etc.. I dunno.... What would you do?
Posted 07 January 2011 - 10:26 AM
AS far as i know, the only way to PL a 7D is the "hot rod" system which requires removing the whole front of the camera and putting a hard mount on, and costs a few thousand.
Another option would be to look into a Micro 4/3rds system, which has adapters available. The new Panasonic camera, AF-100, is a 4/3rd sensor/mount in a video body, which might be more useful for you. Plus, it has all the audio inputs needed for a normal video camera and records to a more NLE friendly codec (AVCHD)
Posted 10 January 2011 - 12:01 AM
Posted 10 January 2011 - 04:10 PM
If you can figure out a way to mount your lenses on the Panasonic GH2, then you can use that camera's 1:1 feature which should match nicely with your lenses. The GH2 offers similar video settings, quality, and codec to the AF100, but it is a point-and-shoot form factor with poor pro audio, time code, and monitoring capabilities.
Posted 10 January 2011 - 11:38 PM
Posted 11 January 2011 - 11:37 AM
Posted 11 January 2011 - 11:46 AM
FYI, the arri b-mount is for 35mm lenses
Doh! You're right. I was thinking 16mm. Your 20-120 would cover four-thirds sensor fine. Not sure about the 7D.
Posted 12 January 2011 - 09:23 AM
I suspect the 25-250mm is the same basic design but I don't have one in hand to look at.
I'm buying one of the Polish BNCR/EOS adapters that require removing the EOS mount's four screws to install their adapter. There are new Angie zooms that are retrofocal and are obviously PL mount. Angie had short zoom on a 7D at this year's NAB, it produced an awesome image. Anyone out there who has tried a modern PL mount Angie on a 7D?
One huge advantage of a motion picture zoom lenses over Canon lenses is they're parfocal, you can zoom in, focus, and then zoom out. That doesn't work with still photo zooms. My otherwise killer little EF-S 17-55mm F2.8 drives me nuts when shooting documentary style. I've got the docco habit of always zooming in to focus, then out to frame...which of course never works with a still zoom.