Filter Size at DVinfo.net

David Ziegelheim · July 19th, 2006, 09:30 PM

What is the smallest matte box that will work with the HD100 lens. I assume a 4x4 will work, that a 4x5.6 isn't necessary. However, will a 3x3 also work? They are a lot smaller to carry around! (And I already have them).

Thanks,

David

Earl Thurston · July 20th, 2006, 12:10 PM

I think 3x3's would be too small. That's smaller than 82mm, which is the circular filter size.

David Ziegelheim · July 20th, 2006, 05:32 PM

However I use 3x3s on an 82mm Canon .7x WA Adapter which is in front of a 5.6mm lens. Cavision said the problems occured under 3.9mm effective.

The 16x5.5 is obviously longer. Even with a .7x adapter it is still 3.85mm.

So, shouldn't it work?

Jack Walker · July 20th, 2006, 05:41 PM

Quote:

Originally Posted by David Ziegelheim

What is the smallest matte box that will work with the HD100 lens. I assume a 4x4 will work, that a 4x5.6 isn't necessary. However, will a 3x3 also work? They are a lot smaller to carry around! (And I already have them).

Thanks,

David

If you already have the 3x3 matte box, can't you just try it?

Tom Valens · July 20th, 2006, 06:38 PM

I have a Chrosziel 3X3 matt box, with one fixed and one rotatable filter slot, that works fine when attached to the .82 WA adapter on front of the standard 16X lens of my HD100. I'd had it for my DSR500, so tried it on the HD100 before looking any further. I did need to thicken the outside of the .82 just a tad in order for the matt box to screw on tightly - I just added one layer of white masking tape to the end of the .82. The Chrosziel 3X3 doesn't work when screwed on directly to the 16X lens - crimping the outside diameter of the end of the lens binds it enough that the focus ring no longer works properly (you can see this by just squeezing the end of the lens and trying to focus). But this is a mounting problem - if there were a 3X3 mattbox that mounted under the camera that shouldn't be a problem. In any case, 3X3 is plenty large enough, even with the .82 WA adapter.

Tom Valens
Tamalpais Productions

David Ziegelheim · July 20th, 2006, 07:34 PM

Cavision has adapters to reduce the 85mm mount to 82mm, 72mm, and I believe some other sizes. What size is the base lens? I use the matte box without an adapter on the Cannon WA, and with a 52mm to 72mm adapter and a 72mm-85mm reducer without it.

Looking at the 16x5.5mm lens, it 'looked' like the 3x3 would work. it looks like it might even work on the 18x4.2, at least if a WA is not used.

July 19th, 2006, 09:30 PM	#1
David Ziegelheim Major Player Join Date: Jul 2003 Location: Warren, NJ Posts: 398	Filter Size What is the smallest matte box that will work with the HD100 lens. I assume a 4x4 will work, that a 4x5.6 isn't necessary. However, will a 3x3 also work? They are a lot smaller to carry around! (And I already have them). Thanks, David

July 20th, 2006, 12:10 PM	#2
Earl Thurston Major Player Join Date: Dec 2005 Location: Burnaby & Maple Ridge BC Posts: 289	I think 3x3's would be too small. That's smaller than 82mm, which is the circular filter size. __________________ Earl R. Thurston, Stargate Connections Inc. Made with GY-HD100: The Container Adventures: The Rescue

July 20th, 2006, 05:32 PM	#3
David Ziegelheim Major Player Join Date: Jul 2003 Location: Warren, NJ Posts: 398	However I use 3x3s on an 82mm Canon .7x WA Adapter which is in front of a 5.6mm lens. Cavision said the problems occured under 3.9mm effective. The 16x5.5 is obviously longer. Even with a .7x adapter it is still 3.85mm. So, shouldn't it work?

July 20th, 2006, 06:38 PM	#5
Tom Valens Regular Crew Join Date: Nov 2005 Posts: 28	I have a Chrosziel 3X3 matt box, with one fixed and one rotatable filter slot, that works fine when attached to the .82 WA adapter on front of the standard 16X lens of my HD100. I'd had it for my DSR500, so tried it on the HD100 before looking any further. I did need to thicken the outside of the .82 just a tad in order for the matt box to screw on tightly - I just added one layer of white masking tape to the end of the .82. The Chrosziel 3X3 doesn't work when screwed on directly to the 16X lens - crimping the outside diameter of the end of the lens binds it enough that the focus ring no longer works properly (you can see this by just squeezing the end of the lens and trying to focus). But this is a mounting problem - if there were a 3X3 mattbox that mounted under the camera that shouldn't be a problem. In any case, 3X3 is plenty large enough, even with the .82 WA adapter. Tom Valens Tamalpais Productions

July 20th, 2006, 07:34 PM	#6
David Ziegelheim Major Player Join Date: Jul 2003 Location: Warren, NJ Posts: 398	Cavision has adapters to reduce the 85mm mount to 82mm, 72mm, and I believe some other sizes. What size is the base lens? I use the matte box without an adapter on the Cannon WA, and with a 52mm to 72mm adapter and a 72mm-85mm reducer without it. Looking at the 16x5.5mm lens, it 'looked' like the 3x3 would work. it looks like it might even work on the 18x4.2, at least if a WA is not used.