CAVision Matte Boxes & Zoom Lenses at DVinfo.net

Robert Double · July 17th, 2005, 07:27 PM

Hi,

I am looking at putting together a rig that uses a zoom lens and the CAVision 16:9 matte box on 15mm rods. However I have a question about the matte box and how it is fixed to the rods.

The zoom lens extends during zooming. So I am hoping that the matte box attached to the rods can freely slide up and down while I zoom? Can someone confirm this is the case?

Thanks in advance to anyone who can help me out :)

Robert

Rainer Hoffmann · July 18th, 2005, 12:23 AM

Robert,

I don't use the Cavision matte box but the Chrosziel. The Chrosziel matte box does not slide freely on the rods. It takes some (gentle) force applied to the center bracket to move it backward or forward on the rods. I guess the Cavision matt box won't be much different in that respect.

Dylan Couper · July 18th, 2005, 01:09 AM

I have one, it slides up and down the rods, but I'm not sure if you'd call it "freely".

Simon Wyndham · July 18th, 2005, 01:17 AM

Robert, which camera/lens are you using?

Dan Diaconu · July 18th, 2005, 01:39 AM

Robert, I do not supposed you meant to zoom "in shoot" right (and have the MB allow for the extension of the zoom)? If the sliding means just to set up the frame, than any of them will do, otherwise, none (on rods!)(imo)

Robert Double · July 18th, 2005, 06:10 AM

Hey Guys,

Thanks for your responses......

Dan yes it is just to setup framing rather than to zoom during a shoot.... I suppose I just have to loosen the mattebox to allow it to freely move. Once focal length has been chosen, then fasten the bugger down...

Robert

July 17th, 2005, 07:27 PM	#1
Robert Double Regular Crew Join Date: Oct 2004 Posts: 74	CAVision Matte Boxes & Zoom Lenses Hi, I am looking at putting together a rig that uses a zoom lens and the CAVision 16:9 matte box on 15mm rods. However I have a question about the matte box and how it is fixed to the rods. The zoom lens extends during zooming. So I am hoping that the matte box attached to the rods can freely slide up and down while I zoom? Can someone confirm this is the case? Thanks in advance to anyone who can help me out :) Robert Last edited by Robert Double; July 17th, 2005 at 07:43 PM.

July 18th, 2005, 12:23 AM	#2
Rainer Hoffmann Major Player Join Date: Aug 2004 Location: Syke, Germany Posts: 249	Robert, I don't use the Cavision matte box but the Chrosziel. The Chrosziel matte box does not slide freely on the rods. It takes some (gentle) force applied to the center bracket to move it backward or forward on the rods. I guess the Cavision matt box won't be much different in that respect. __________________ Keep rolling Rainer

July 18th, 2005, 01:09 AM	#3
Dylan Couper Wrangler Join Date: Jun 2002 Location: Vancouver, British Columbia Posts: 8,314	I have one, it slides up and down the rods, but I'm not sure if you'd call it "freely". __________________ Need to rent camera gear in Vancouver BC? Check me out at camerarentalsvancouver.com

July 18th, 2005, 01:17 AM	#4
Simon Wyndham Trustee Join Date: Dec 2003 Location: Malvern UK Posts: 1,931	Robert, which camera/lens are you using?

July 18th, 2005, 01:39 AM	#5
Dan Diaconu Major Player Join Date: Dec 2004 Location: Vancouver, Canada Posts: 804	Robert, I do not supposed you meant to zoom "in shoot" right (and have the MB allow for the extension of the zoom)? If the sliding means just to set up the frame, than any of them will do, otherwise, none (on rods!)(imo)

July 18th, 2005, 06:10 AM	#6
Robert Double Regular Crew Join Date: Oct 2004 Posts: 74	Hey Guys, Thanks for your responses...... Dan yes it is just to setup framing rather than to zoom during a shoot.... I suppose I just have to loosen the mattebox to allow it to freely move. Once focal length has been chosen, then fasten the bugger down... Robert