New 6X & Chrosiel Follow Focus at DVinfo.net

John Richard · December 22nd, 2006, 09:27 AM

Does anyone know if Chrosiel has a new Ring Gear that fits the 6X for their Follow Focus system?

Chris Hurd · December 22nd, 2006, 09:40 AM

Good question -- have we determined what that diameter actually is?

Steve Rosen · December 22nd, 2006, 10:14 AM

When I ordered my lens from Christine @ ZGC (highly recommended, by the way), she told me that she talked to Chrosziel and they said a focus ring is in the works, probably not available till February..

Will Griffith · December 22nd, 2006, 11:50 AM

in the meantime....

maybe this will work?

http://store.zacuto.com/product.php?...2&cat=8&page=1

Steve Rosen · December 22nd, 2006, 12:40 PM

That's interesting, it doesn't say the gear pitch, but I would assume standard cine (which is the same as the Chrosziel 20x gear, but different than the integral gear on the 16x)...

Are you using it?

Will Griffith · December 22nd, 2006, 12:45 PM

Quote:

Originally Posted by Steve Rosen

Are you using it?

No. But I may order one next month....assuming it is
cine pitch.

Steve Rosen · December 22nd, 2006, 02:20 PM

My only concern would be that the focus collar on cine and video manual lenses (for which this is designed) don't rotate more than 360 degrees, and the start and stop is always in the same place - so if there is a rough spot where the two ends of the strap meet, you can customize the fit so the FF unit will miss it...

These AF lenses (I don't have the WA yet, speaking of the 20x) tend to rotate more than 360 and, because they are AF, the start and stop points aren't in the same place from shot to shot - so if there is a rough spot, it will be difficult to miss...

If you're lucky, the diameter of the lens will be exactly the distance of the cut gear strap, from tooth top to tooth top, if not there will be a noticeable glitch area.

(all of this would mean, by the way, cementing the strap to the lens barrel rather than using the clamp in the photo)...

Might be safer to wait for the Chrosziel, or have a custom gear made (it's not rocket science)...

Jonas Nystrom · December 22nd, 2006, 05:34 PM

The manual focus ring on the lens is about 106 - 108 mm diameter and have a 340 mm circumference. I think that the Zacuto Zipgear has a 0.8 pitch.

December 22nd, 2006, 09:27 AM	#1
John Richard Major Player Join Date: May 2006 Location: Incline Village, Nevada Posts: 604	New 6X & Chrosiel Follow Focus Does anyone know if Chrosiel has a new Ring Gear that fits the 6X for their Follow Focus system?

December 22nd, 2006, 09:40 AM	#2
Chris Hurd Obstreperous Rex Join Date: Jan 2001 Location: San Marcos, TX Posts: 27,368 Images: 513	Good question -- have we determined what that diameter actually is? __________________ CH Search DV Info Net \| 20 years of DVi \| ...Tuesday is Soylent Green Day!

December 22nd, 2006, 11:50 AM	#4
Will Griffith Regular Crew Join Date: Apr 2003 Location: Tennessee Posts: 164	in the meantime.... maybe this will work? http://store.zacuto.com/product.php?...2&cat=8&page=1 __________________ will griffith producer/editor

December 22nd, 2006, 05:34 PM	#8
Jonas Nystrom Major Player Join Date: Jan 2006 Location: Göteborg, Sweden Posts: 306	The manual focus ring on the lens is about 106 - 108 mm diameter and have a 340 mm circumference. I think that the Zacuto Zipgear has a 0.8 pitch. __________________ Jonas Nyström, DoP :: HOT SHOT® SWEDEN :: www.hotshot.nu :: RED #1567, RED 18-50mm T3 :: XL A1, Letus Extreme :: XL H1, 20X & 6X lens (for sale) :: www.vimeo.com/nystrom

December 22nd, 2006, 10:14 AM	#3
Steve Rosen Major Player Join Date: Dec 2005 Location: Monterey, California Posts: 895	When I ordered my lens from Christine @ ZGC (highly recommended, by the way), she told me that she talked to Chrosziel and they said a focus ring is in the works, probably not available till February..

December 22nd, 2006, 12:40 PM	#5
Steve Rosen Major Player Join Date: Dec 2005 Location: Monterey, California Posts: 895	That's interesting, it doesn't say the gear pitch, but I would assume standard cine (which is the same as the Chrosziel 20x gear, but different than the integral gear on the 16x)... Are you using it?

December 22nd, 2006, 02:20 PM	#7
Steve Rosen Major Player Join Date: Dec 2005 Location: Monterey, California Posts: 895	My only concern would be that the focus collar on cine and video manual lenses (for which this is designed) don't rotate more than 360 degrees, and the start and stop is always in the same place - so if there is a rough spot where the two ends of the strap meet, you can customize the fit so the FF unit will miss it... These AF lenses (I don't have the WA yet, speaking of the 20x) tend to rotate more than 360 and, because they are AF, the start and stop points aren't in the same place from shot to shot - so if there is a rough spot, it will be difficult to miss... If you're lucky, the diameter of the lens will be exactly the distance of the cut gear strap, from tooth top to tooth top, if not there will be a noticeable glitch area. (all of this would mean, by the way, cementing the strap to the lens barrel rather than using the clamp in the photo)... Might be safer to wait for the Chrosziel, or have a custom gear made (it's not rocket science)...