Caprock Anti-Moire Filters - Page 3 - DVXuser.com -- The online community for filmmaking

Andrew Brinkhaus · 11-03-2009, 10:51 PM

My Sigma 24-70 f/2.8 is 82mm...bummer.

Sttratos · 11-04-2009, 05:14 AM

Isaac, about the sharpness, is the filter only usable for close ups and mediums or is there enough sharpness left for establishing external shots ? If not asking too much, would it be possible to post a full res 1080p frame grab of a very wide shot or at least a full shot with and without the filter?
Thanks in advance. This filter may be the "solution" we are all looking for.

joe 1008 · 11-05-2009, 02:28 AM

I also had good results with the cokin system, using the netties 143 and 145, especially the 143 quits a lot of moiré though there is some softness, too. But you will get a nice, not TOO soft look, maybe desireable for some some your stuff.

Sttratos · 11-05-2009, 07:33 AM

For me the smaller the sharpness loss the better really. I'm looking forward to Isaac's reports.

Peter J. DeCrescenzo · 11-05-2009, 02:52 PM

Quote:

Originally Posted by Isaac_Brody

My 2.0 came today. ... a quick test on this piece of fabric in my room that brings out the worst moire looked promising. ... A 2 is the best tradeoff between elimination and sharpness. ...

Hi Isaac: Thanks very much for posting preliminary results/impressions from your testing.

"J" brings up an interesting question here:
http://www.dvxuser.com/V6/showpost.p...05&postcount=5

Do you have any idea if focal length has a significant impact on which strength CapRock filter one "should" use?

Again, your efforts on this topic are much appreciated!

Isaac_Brody · 11-05-2009, 03:52 PM

Quote:

Originally Posted by Peter J. DeCrescenzo

Hi Isaac: Thanks very much for posting preliminary results/impressions from your testing.

"J" brings up an interesting question here:
http://www.dvxuser.com/V6/showpost.p...05&postcount=5

Do you have any idea if focal length has a significant impact on which strength CapRock filter one "should" use?

Actually yes, I wouldn't use this on my telephoto lenses. I'd really only use this on my 28mm or a 35mm. The blurring is unacceptable on my 135mm lens but it's not an issue on my 28mm. I'm sure there's an explanation for this but I don't know why that's the case. I don't really notice moire on my 50mm, or rather I'm not really shooting wides on a 50 so the Caprock isn't really needed there. I haven't had moire issues for what I've shot so far, just when shooting wides and that's when I'll break this out and use it.

I'll post some footage when I have some free time. I'm working on a feature script so that takes precedence over Caprock tests at the moment. I'll find some nice juicy moire stricken brick buildings to shoot soon enough.

ROCKMORE · 11-05-2009, 07:50 PM

I posted this once before, but has anyone tried Tiffen softFx filters to see what effect if any they have on the aliasing and moire problems?

http://www.tiffen.com/sfxpics.htm

killacam · 11-06-2009, 12:38 AM

could you use this with another filter like the fader nd? how would you stack them? would you need the double filter ring to put the fader in front of the anti-moire

ROCKMORE · 11-06-2009, 01:52 AM

Quote:

Originally Posted by killacam

could you use this with another filter like the fader nd? how would you stack them? would you need the double filter ring to put the fader in front of the anti-moire

I have a Soft-FX #.5 # 1 & #2. I have stacked them together on video cameras. They work well to soften the nasty video look on older SD broadcast cameras and don't blur the image too much because of the dimple design in the glass as apposed to etched glass filters. The .5 is very light but useful.
As for the question about stacking with a fader ND I'm not sure what size that filter is, but these are standard 72mm thread front and back.
Maybe someone at Caprock is listening to this post and can tell us the advantages of their anti-aliasing filters over the Soft-FX design, and what does the Caprock anti-aliasing filter actually do technically.

Anthonyb · 11-08-2009, 03:57 PM

I've been speaking to the caprock people and they now offer a 4x4 glass filter at the 2.0 range, but it's limited to 3"x3" of the glass... Kinda lame, but better than nothing.

11-03-2009, 10:51 PM	#21
Andrew Brinkhaus Senior Member Join Date: May 2005 Location: Los Angeles, CA Posts: 2,372	My Sigma 24-70 f/2.8 is 82mm...bummer. __________________ Andrew Brinkhaus \|director of photography www.andrewbrinkhaus.com Los Angeles

11-04-2009, 05:14 AM	#22
Sttratos Senior Member Join Date: Feb 2008 Posts: 154	Isaac, about the sharpness, is the filter only usable for close ups and mediums or is there enough sharpness left for establishing external shots ? If not asking too much, would it be possible to post a full res 1080p frame grab of a very wide shot or at least a full shot with and without the filter? Thanks in advance. This filter may be the "solution" we are all looking for. Last edited by Sttratos; 11-04-2009 at 06:29 AM.

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11-05-2009, 02:28 AM	#23
joe 1008 Senior Member Join Date: Dec 2005 Location: Barcelona Posts: 643	I also had good results with the cokin system, using the netties 143 and 145, especially the 143 quits a lot of moiré though there is some softness, too. But you will get a nice, not TOO soft look, maybe desireable for some some your stuff.

11-05-2009, 07:33 AM	#24
Sttratos Senior Member Join Date: Feb 2008 Posts: 154	For me the smaller the sharpness loss the better really. I'm looking forward to Isaac's reports.

11-05-2009, 07:50 PM	#27
ROCKMORE Senior Member Join Date: Jul 2009 Posts: 101	I posted this once before, but has anyone tried Tiffen softFx filters to see what effect if any they have on the aliasing and moire problems? http://www.tiffen.com/sfxpics.htm

11-06-2009, 12:38 AM	#28
killacam Member Join Date: Apr 2009 Posts: 80	could you use this with another filter like the fader nd? how would you stack them? would you need the double filter ring to put the fader in front of the anti-moire

11-08-2009, 03:57 PM	#30
Anthonyb Member Join Date: Oct 2008 Posts: 91	I've been speaking to the caprock people and they now offer a 4x4 glass filter at the 2.0 range, but it's limited to 3"x3" of the glass... Kinda lame, but better than nothing.