dam'... awkward choices.

I

ICD Films

Well-known member
So... it's this dream scene with a bride wearing a wedding dress... in low light. In slow-motion. Here's the annoying part...

The Canon's moire the dress. 720p looks like hell. 1080p could be dithereded but not ideal, and 30p is a bit too fast anyway for nice slo-mo. Too much going on in the image to be able to use twixtor. So Canon excluded.

My GH1 can't do it cus it's a FPN-*****. GH2 could do it but then it's a gamble, because the blue FPN-line that occurs ISO+800 will be right in the middle of the image, and I don't have a fast m4/3 wide angle. Yes the line is static on the image but it's a serious gamble, especially since it's gonna be right in the middle of it. The line will only dissapear under 30 shutter, and that's not an option shooting in slow-motion.

550D, 5Dmk2, GH1, GH2... that's my options, and I can't figure this out :embarasse Guess I could sell 'em and get a AF100... but really this is awkward.

Is there any AMAZING anti-moire plugin/program out there? Must work on PC too...

Sony F3 down from the sky plox!!!!!!
 
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It's a dream sequence. Try a pro-mist filter (or even the old-school trick of stretching a stocking over the lens). It'll soften the image up enough to alleviate the moire.
 
Alex H. said:
It's a dream sequence. Try a pro-mist filter (or even the old-school trick of stretching a stocking over the lens). It'll soften the image up enough to alleviate the moire.
Click to expand...

Being an old guy, I'll comment that when we netted the lens we used it over the rear element, not the front of the lens. And the color of the stocking matters as well.

All the Best!

Dave
 
Alex H. said:
It's a dream sequence. Try a pro-mist filter (or even the old-school trick of stretching a stocking over the lens). It'll soften the image up enough to alleviate the moire.
Click to expand...

+1, Filters are a great way to achieve this effect, in fact probably the only way. If you take the time to experiment, I think any of the cams you listed will be able to handle the job. We know Moire can be helped with changing focal length, So that might be the answer. The gh2 could do it, and if your worrying about the banding, then add some light. It seems this is staged? if yes, there's no reason it couldnt be pulled off with some creative lighting. If it's not, and it's a live shot with only one chance to get it, then go with the gh2. At least the banding doesn't jump out like the canon moire does.
 
Not that yet another camera is really an ideal option here, but have you tried the T3i crop mode on this shot? When the sensor uses pixels that are closer together, Moire almost disappears. I don't have a T3i to test with at the moment, but if I understand correctly, you can record in all of the same modes using crop as you can otherwise, so a 720p @ 60fps with a crop to help alleviate the moire.

Just an idea. Although softening the image would probably work too.
 
@F3: a lot, lot, lot less degree, if compared with 720p on the canons!!
http://translate.googleusercontent....n.html&usg=ALkJrhg5sf723Dt-odN01uZDmnPmqgSekQ
http://translate.google.com/transla...kompakte-Ueberflieger--Aus-dem-Messlabor.html
http://www.slashcam.de/artikel/Test/Panasonic-AG-AF101--24P---Aus-dem-Messlabor.html

@T3i 3x crop: he wants wide angle, if even a normal lens was acceptable, using the GH2 with a voigtlander 25mm f/0.95 should keep the ISO under 800 and avoid the blue FPN (which I didn't even know about)

@OP: also consider shooting black and white, if that's an option; I haven't ran any tests, but I guess I should help a lot
 
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Isn't the GH1's FPN much less of a problem in 720P mode?

What exactly is causing the moire on the dress? Is it the whole dress or just one part of it? I've shot several weddings with DSLR's and never had this problem. Surely in a controled situation you can overcome it and not have to blame your cameras.

A couple of possible solutions:

Softening filter; change the storyboard to allow either different cropping or angles; move closer or further away; different dress; drape the veil over the problem area to soften the detail or block it completely with her bouquet; use extremely shallow DOF and focus on her face; add extra light to the problem areas to blow out the highlights (also adds to the dream look); Find an FCP editor who can remove the moire from the problem shots for you using the FCP Anit-moire plug in.
 
Nah it's just a weird dress, fine patterns... but yeah I just picked up another GH1 cheap that hopefully has bit less FPN... Otherwise I'll just have to live with some pattern noise... better that than the framed subject looking like a stroboscope on drugs...
 
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