Moire' Maddness-Nuclear Shirt-AF 100

dsurfer3

dsurfer3

New member
:Drogar-Sick(DBG):
I shot an interview with a gentleman wearing a pin stripped shirt. Using the AF 100 set at 1080/24P in the Cine-Like D mode. The ISO was 400 and I had shutter at 1/60. For some reason the syncro scan was at 180.0d (i didn't check it). Using the Ziess Planar 1.4/50 ZF.2 lens. The eyepiece viewerfinder was in focal assist and looked fine. I had a Zacuto EVF and it looked great...not even a hint of something going dreadfully wrong. It was shot under a lake side dock on a sunny day with Lowell Omni lighting . I don't have the luxury of lugging a 46 inch HD monitor to location shoots. Once it was loaded into PP the shirt went nuclear and the subject didn't move...just a head and shoulders shot. The shirt looks fine until I push play then it's squigglyville.

So where did I go wrong? What should the camera be set to so this will NOT happen again? Please don't tell me I can't shoot fine line fabric with my new fancy cam.

Second question is what can I use with Premiere Pro CS5.5 to eliminate the moire? Is there a plug in? Do I have to send to after effects and do 20 steps to correct? I am lost. Any and all help would be most appreciated.

ThanksEmployee Stories.Still001.jpg
 
Pin-striped shirts are terrible, even more so with HD. It happened in the promo video we shot for the company I work for. I don't really know how to get rid of it (and boy did I try).
ScreenShot2012-02-02at25140PM.jpg
 
That looks really ugly but I never had a pattern that the AF couldn't hold free of moire or aliasing and I've done many interviews with the subject wearing fine pattern clothing. Strange indeed.
 
I find that reducing the contrast on the shirt sometimes helps- in After Effects I would make an Adjustment layer and add the contrast/lightness effect. Make a mask for this effect - somewhat precise- and be sure to feather the edges to allow it to blend.
I would turn down the contrast as much as I could. The moire should be less noticable.

It also sometimes looks painfully obvious, but if you cannot reshoot it may be a solution for you. It's better than moire!
 
Little Bobby and dsurfer3, what was detail and coring set at for the two examples? I always run detail at -4, V detail at -4 and coring at 0 and haven't had any issues that stand out. The F3 is more susceptible to moire than the AF100. The C300 seems to be pretty good as well, just saw a small amount on a wedge chart, but no chroma moire.

I've actually had more issues with 2/3" 3-CCD cameras moire and aliasing wise than with the AF100.
 
In a year's worth of shooting with the AF and quite a few interviews , I have had to ask for wardrobe changes exactly twice. Once with a balck and white stripe pattern and the other time with a black and white very fine hounds tooth pattern. That's it. Were you shooting interlace?
 
Dino,
As for me I have not messed with any of the details so all are set at 0. Perhaps I need to get more intimate with my gear and just start adjusting. I will try to do a test shoot with your recommendations. I wonder if I turned the shutter speed up to 180 or higher if that would help. I appreciate the input..
 
Hi Mark,
1080P 24fps. Would interlace made a difference because I am willing to try anything...thanks for the help.
 
Little Bobby,
I did give the raw to a friend who is a FINAL CUT Evangelist and he says he has a plug in that will cure the dastardly deed of moire'. Of course he tells me it's just for MAC and wouldn't work in my puny laptop workstation with Premeire Pro. I say whatever as long as I can rid of this headache. The question is what happens to the next time? There has to be a work around or some setting that will eliminate my AF 100 from capturing this again. I will keep you informed. Thanks by the way.
 
Thin stripe shirts are terrible. Not to play armchair quarterback, but I usually (when possible) contact the person(s) we are interviewing to make sure thin stripe and white shirts are out. If you can, have them put on a jacket or monitor on a standard definition monitor. A SD monitor will show the moire' at its worst. Lastly, shoot them a little tighter to lees of the pattern.
 
editman said:
The thing with fine pattern is the AF might handle them perfectly but when you downscale it the process can introduce aliasing.
Click to expand...

Only if the specific software cannot downscale properly. Good software will do downscales properly in that no moire or artifacts are introduced.
 
Try turning down the detail. I have never had it moire yet, and I have shot some shirts that should have. (P.S. Sure it is Moire in the final footage, and that it is not caused by resizing it for playback in the premiere window.... Try watching it play back full screen at 1080p, I once noticed moire in my L&T window in FCP, but when I watched the clip full screen at full resolution, it was gone.)
 
In the days before the shoot I tell all on-camera talent/interviewees NO TIGHT PATTERNS. I typically send an email with some rules...no tight patterns, no white shirts, no red shirts.
 
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