View Full Version : Chrosziel/Petroff with Nikkors?
04-03-2007, 01:06 PM
Does anybody know if there will be issues using premium Follow focus units (Chrosziel/Petroff/Arri) with Nikkors/Canons and their respective clip-on gearing? Is their a cog size/depth issue i don't know about?
Can RED recommend any system (premium) that is working well with their pre-production units?
I know this topic has been discussed before, but this gear is vital to RED's versatility.
I'm hopeing RED will produce (or outsource) a Matte box/FF unit at the same price point/engineering quality as the rest of the system.
04-03-2007, 01:26 PM
We use a Chrosziel Follow Focus with our M2 rig on 15mm rods. Nikon lenses with the RedRock gear rings. Part No. 202-12 which is a focus drive with a 0.8 pitch.
Depending on your market I have yet to meet a Focus Puller that will settle for anything less than Arri.
04-03-2007, 01:41 PM
LOL who is pulling focus on your camera?!
In all seriousness, Arri is pretty expensive.
I think I need an "as good as" option.
04-03-2007, 01:50 PM
As I said it depends on the market you're catering to. Everyone starts with the Viper and a set of Zeiss Digi primes and before you know it they're shooting on a Z1 ;)
The upgraded RedRock FF has had some good feedback.
04-03-2007, 01:59 PM
I'm all keen to use/check out the RR FF, but I'm not sure my market will permit it.
Then again, if they produced a solid combination package (three filter, swing away, 4x5.65 etc) at a resonable price I might just bite.
04-04-2007, 08:58 PM
The underlying problems are the size of the range of focus on Nikons etc. and the less than accurate lens markings.
The smaller the gear on the follow focus the larger the appearant movement of the focus wheel for correspondingly small movements of the lens.
The tighter the fit of the gears on the focus unit to the gears on the lens, the better since the lense range of movement is small backlash will be a more noticeable problem. most all these gears are 32tooth 20 degree straight cut. There is some noticeable backlash always present there, on most of the less expensive focus systems the big backlash problem in internal gearing.
Good to tape the focus ring on the lens and measure your own distances onto it. For those who are not assts. there are small art store tapes in various colors that take a fine tip sharpy very well for pretty permanent marks on the lens.
04-04-2007, 09:20 PM
For those who are not assts. there are small art store tapes in various colors that take a fine tip sharpy very well for pretty permanent marks on the lens.
car pin striping works well also.
04-10-2007, 08:39 PM
Hi Finner I think the art store tape is the same stuff?
Looking at some of the Nikkors/Canons which shift out on the end and have about 1/8" of the part which protrudes showing when they are in the short position, it should be interesting to see how a clip on matt box will work?