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Fitting a Chrosziel FF and Mattebox to my system


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#1 Mihai Nicolau

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Posted 12 August 2008 - 03:26 PM

Hello,

I'm going to buy a support system from Zacuto for my sony EX1 and I would like to know if i'll have any problems fitting the Chrosziel Studio Rig FF with 2 handwheels and one of their matteboxes with swing-away action.
I'll also have an aditional 35mm adapter (Letus Ultimate) on the front of the Ex1 with still lenses attached. So the FF and the mattebox must fit these lenses.

I'm concerned that the follow focus won't fit below my still lenses when mounted on the adaptor. Being the 2 hanwheel model, will the shaft connecting the 2 hanwheels have enough space below the lens to properly function ? I don't have any experience with this and from the pictures i have seen of the unit it seems very unlikely.
Zacuto uses some .08 pitch zip gears to wrap around the still lenses so that they can be used with a FF unit. what kind of focus drive will I need from Chrosziel to work with ehse .08 zip gears ? They have many options to choose from and i'm totally baffled.

What about the mattebox. It looks higher than a normal one without a swing-away bracket and i'm afraid that it won't fit.

Any advice highly appreciated. Thanks!
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#2 Mitch Gross

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Posted 12 August 2008 - 04:31 PM

If you check the Zacuto website they have images of the various systems configured. The Letus offsets the height of the lens, which can be adjusted for using the Z-riser. .08 focus gear ptch is also known as .32 and this is standard film gearing. You can purchase the appropriate gear for your Chrosziel.

Abel can help you with all of this.
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#3 Mihai Nicolau

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Posted 12 August 2008 - 05:25 PM

Well yes but none of their product photos has the components i'm talking about. Believe me i've looked at their photos to figure out where all the little parts go times and times again :D . I'm afraid that it would be so offset that i couldn't even adjust it with the Z-riser. Can this happen ?

Hmm..thank you for the gear pitch info. But i still don't understand it. Here is the line-up of gear pitches directly from Chrosziel's catalog:

Focus drive for Angenieux, Canon ENG - mod 0.5
(Ø28.45mm - B8.0mm) - teeth 55
201-10 Focus drive for Fujinon ENG - mod 0.6
(Ø32.50mm - B8.0mm) - teeth 52
201-23 Focus drive for Canon, Fujinon cine style HD & ENG - mod 0.8
(Ø46.30mm - B8.00mm) - teeth 56
201-22 Focus drive for Zeiss, Canon, Fujinon video prime lens - mod 0.8
(Ø36.80mm - B8.00mm) - teeth 44
202-17 Focus drive for Fujinon ENG - mod 0.6 (for old video studio rig 202-01)
(Ø38.30mm - B8.00mm) - teeth 62

Focus drive for studio rig FILM
201-16 Focus drive for Angenieux, Canon, Schneider ENG - mod 0.5
(Ø35.00mm - B8.00mm) - teeth 68
201-17 Focus drive for Fujinon, Nikon ENG - mod 0.6
(Ø28.70mm - B8.00mm) - teeth 46
201-21 Focus drive for Canon 20x8 ENG - mod 0.5
(Ø35.00mm - B8.00mm) - teeth 68
201-12 Focus drive for Canon & Fujinon cine style HD & ENG and
Zeiss, Canon, Fujinon video prime lens - mod 0.8
mod 0.8 (Ø25.60mm - B8.00) - teeth 30

So what should I choose... :huh: Can somebody explain to me what all those things mean ? Pitch (i know this is the spacing between the actual teeth of the focus drive), mod, and this sign Ø and drives with the same mod but different number of teeth.

Thank you!
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