C100: 1st Major Event Shoot...The Good...The Ugly

i used to be the one saying "only shoot 24 if it's to look cinematic" but now it's pretty much a crapshoot, tons of TV shows are done in 24 and it doesn't seem to matter much. i shoot 24 pretty much all the time.
 
I've been shooting for 2 years only on 24p for web, DVD and blu-ray delivery and haven't seen one bit of a problem for me to even consider changing
 
Yes, me too. 24p is my default project setting. I shoot 30p if I know I want to slow the footage down for a subtle slow-motion effect.
 
mhood said:
Well, isn't this embarrassing. Apparently, I am an idiot. I forgot to interpret all footage as progressive when I imported with Media Browser. There's still some very slight moire in a few places but nothing at all like I was getting. Would it be easier just to give up and shoot everything at 24p? Nothing I do ever gets broadcast and is nearly always delivered on the intra/internet. Sorry for the fire drill. To quote Roseanne Roseannadanna: "Nevermind."

This camera rocks...even in the hands of an old vidiot.
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Had a feeling. I just wasnt' seeing it in other tests/shoots.
 
Moire can sometimes be a problem on all cameras and all formats. When I used to shoot film I would never see moire though the viewfinder, but in a post video/digital environment it would show up and sometimes be impossible to get rid of. I picked up an old fashion trick that is foolproof. I look at the fabric in question and squint. Seriously. If it's going to moire you are going to see it. Now, shooting digital with the C300 I always squint at the talent before we get started and if there is a problem, get them to change outfits. Of course if you're shooting a ballroom filled with people you have to rely on the other good tricks that have been mentioned on this thread.
 
Moire preventable.

Moire preventable.

J Davis said:
Just an FYI, there is no such thing as a Moire free digital camera. Every single cam with an array of pixels on its sensor can moire.

You should have done the opposite with the aperture. If u narrow the dof slightly so your talent is in focus but the green isn't the moire on the green will go
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There is such a thing as a moire-free digital camera, but manufacturers just don't make many of them. "Every single camera with an array of pixels on its sensor can moire." ...only in the absence of a properly designed optical low-pass filter (OLPF), or if the pixel aperture ratio is high and the pixel pitch is smaller than the lens resolving limit. The aperture ratio or fill-rate is always low for each of the three primaries on a single-chip camera. Using a bayer pattern CFA, the theoretical maximum fill rate is below 50% for the medium (green) wavelength primary. The problem is that Canon chose to place an OLPF (otherwise known as an AA filter) in the camera which blurs the image to half the sampling frequency (The Nyquist) of the medium wavelength primary on the C100, which is sampled at twice the frequency and twice the fill-rate of the the other two primaries. Canon chose sharpness over moire control. Larry Thorpe has explicitly said this during multiple SPMTE presentations which I attended.
 
mhood said:
Well, isn't this embarrassing. Apparently, I am an idiot. I forgot to interpret all footage as progressive when I imported with Media Browser. .
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Aliasing can happen when the NLE deinterlaces the image because you lose 50% resolution. All edges will become stairstepped.

When talking about moire (which is a pattern of aliasing), we are usually talking about the pattern mess that happens near sharp areas with lots of crisscrossed sharp lines. It can also happen when deinterlacing but usually it only creates aliasing.

For example, an NLE will probably never create a colored moire mess like a DSLR does, even when doing heavy scaling or deinterlacing. I thought you were talking about that type of moire.

A deinterlaced image is easier to spot because everything is 50% less resolution. I wonder how many AVCHD- shoots have actually come out accidentally deinterlaced without anyone even noticing.
 
I'm in a shoot so I can't read the whole thread. But the OP states that he's shooting 30p. Make sure you are correctly interpreting the 30"psf" in your NLE. If you don't, your looking at interlaced footage. What NLE are you in, OP?
I shoot 30p all the time and I don't get any moire and I point the camera at pretty hard scenes where moire would be a problem.
 
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