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DPChallenge Forums >> Tips, Tricks, and Q&A >> chromakey - not at all happy
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Showing posts 1 - 14 of 14, (reverse)
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06/01/2005 10:08:03 PM · #1
So I spent the 100 bucks for the backdrops and stupid money on the Primatte tool from Digital Anarchy and I HATE the results



I attemped to control the spill of the chroma green each time I got close the foreground tones were so muddy they were just plain ugly...

so my question is ... has anybody used the primatte tool and what am I missing in the tweek department .

Thanks
06/01/2005 10:22:18 PM · #2
anyone ???
06/01/2005 10:27:42 PM · #3
sorry, can't help you.

FWIW, the colors in the shot look okay, but I don't know exactly what I am supposed to be looking for, so I guess I am truly useless, right now. :)
06/01/2005 10:28:31 PM · #4
Sounds like you're talking a foreign language to me. lol
I don't have a clue what chromakey is.
06/01/2005 10:39:24 PM · #5
I have the chromaky background and I too am not happy. It just stay rolled up behind my bedroom door. A lesson learned I call it. If you substitute blue background or even green then you are less likely to get the blue haze. At least that is what I think.
06/01/2005 10:44:13 PM · #6
I use ultimatte advantedge to extract the green. a few things though.

WB is crutial.. If there is ANY extra red, your spill will correct with ungodly amounts of red,, making blondes a dark strawberry blonde.

UA costs about 500 bucks but it's amazing.. You can even leave in the shadows if you want. Pretty easier interface if you don't know what your doing. just use the dropper on a green area click a few boxes on the right and hit ok. but you also have total control if you know how to work the channels and all that which I do not.

It also matters what kind of digidrops your using. I have found very little luck with the 'tripped out' ones like i see in yours. I use mostly the Owen's Originals,, Artistic Scenics are awesome,, looks better if you Gaussian Blur it out a bit to creat DOF. I also use their Muslins disc. Make sure that your lighting matches the background, if not you can tweek the background a bit to make it more suitable (as if it were an actual background using dodging burning etc.) I also use a few of the Ultra High Res Digital Backgrounds but less of those. It's an expensive habit but once you get what you need it's awesome


this was created using above EQ.
06/01/2005 10:44:29 PM · #7
I too have a useles chromakey background taking up space in my dining room, my problem was getting the hair to look natural, photos of my baby boy were easy to edit, but when I tried taking pics of my little girl with wispy hair it was impossible (for me anyway) to make it look natural, I also chalked it up to a lesson learned.
06/01/2005 10:45:41 PM · #8
The shot was done against a green screen (background).
The primatte tool is supposed to knock out the green and leave a very detailed mask that a background can be added to.



I very much like the IDEA of chromakey but I am worred about the performance...

The issue that i am trying to resolve is removing the green cast while maintaining the 'pop' of the image
06/01/2005 10:47:23 PM · #9
Are your background chroma colors bleeding over onto your subject? The photo you linked to doesn't appear to have any "spill" that I see. I do see the contrasted outline of the subject's arm but that appears to be due to the angle of the lighting.

I'm assuming that the chroma color is actually either blue or green and that even the orange we see is something that you injected into the shot during the editing.

One thing I wonder about is whether you have the lights turned up too high and you're getting too much bounce off the chroma surface.

Kev
06/01/2005 10:52:55 PM · #10
this one was also done using a green screen and Ultimatte Advantedge.
06/03/2005 11:59:44 AM · #11
It seems to be a great deal of difference between primatte and Advantedge.

Advantage seems to clean spill much better and does not try to color correct that spill by simply bumping the red (does not work well for dark skinned models)...

Guess I am going to shell out the $$$ on advantedge
06/03/2005 12:35:32 PM · #12
One thing that I am finding out with the chromakey is that you have to light the backdrop as well, and have seperation between the subject and it. Causes less spill. I don't use either of the programs (not going to fork out $500 to try it) and don't have much of a problem. My chromakey is blue also.
Might want to Look Here, also.
06/03/2005 07:02:41 PM · #13
Originally posted by dacrazyrn:

One thing that I am finding out with the chromakey is that you have to light the backdrop as well, and have seperation between the subject and it. Causes less spill. I don't use either of the programs (not going to fork out $500 to try it) and don't have much of a problem. My chromakey is blue also.
Might want to Look Here, also.


That was actually my thread,, the biggest problem (solution found!) was the red I spoke of in my ealier post of THIS thread. It turned out to be a WB problem. It was solved by using a custom preset WB.

Message edited by author 2005-06-03 19:03:02.
12/29/2006 08:53:41 AM · #14
nomad469
if you evenly light the backdrop and make sure to keep any wrinkles to a minimum and read the Primatte tutoral and or watch the video you can easily knockout your background

here are 2 that were processed. before and after. the sample photo was downloaded from the Primatte site and then processed in photoshop


BEFORE


AFTER

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