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DPChallenge Forums >> Tips, Tricks, and Q&A >> HELP Green spots on photos of people
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Showing posts 1 - 19 of 19, (reverse)
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10/20/2004 03:50:30 PM · #1
Here is what happened, last weekend my son was in a bodybuilding contest and I took the pictures for the show. On very picture there is green spots on just the people no where else in the picture. I use P.S. for editing and have to use the healing tool to remove them. I took shots for night shot and school days and there is no green spots on them. Does anyone know whats up with this? Why just people (skin) shots?
10/20/2004 03:52:53 PM · #2
Odd. Post so we can see what you mean. Lens flare? Sensor cleaning?

Message edited by author 2004-10-20 15:53:09.
10/20/2004 03:56:33 PM · #3
I am at work and will have to wait until I get home to post pictures. These spots run just along the face and then maybe some on the leg etc? but not on the whole picture or on all of the body.
10/20/2004 03:58:33 PM · #4
Weird reflections into lenses after being oiled down?
10/20/2004 04:02:34 PM · #5
Maybe, I will post some pictures tonight, I thought maybe it was PS because you could not see them until you enlarged the picture for editing. But when I printed a couple shots, there they where just like on PS.
10/20/2004 06:18:11 PM · #6
So is this a real bodybuilding competition where contestants oil their bodies and such? Wonder if it's reflection/refraction from body oils? Or maybe something to do with the lighting that was unique to the venue.

Edit: Damn typos.

Message edited by author 2004-10-20 18:19:05.
10/20/2004 06:27:49 PM · #7
When you cut down on fat and build your muscles and are well defined with a rather massive body which happens to be oiled and sprayed with bronze you body is basically a mirror.
10/20/2004 06:29:20 PM · #8
Lighting conditions weren't probably ideal for photos. What kind of ISO were you using? Lens used?
10/20/2004 07:04:49 PM · #9
yes the lighting was poor. I used the 24-85mm lens at ISO 400. I will be home soon and will upload a picture for you guys to check out
10/20/2004 08:22:33 PM · #10
here is an example of the picture with green spots. on this one they are on the face and left arm and left leg. you will have to enlarge picture to see the
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10/20/2004 09:03:08 PM · #11
bump for help
10/20/2004 09:09:26 PM · #12
I enlarged it, and its very obvious. Seems to be on the harshest light. My G/F was real curiuos why I was blowing up his body, but she liked it the photo with or without the spots.

But I really dont know what would cause that. Good luck.
10/20/2004 09:13:12 PM · #13
Very strange indeed. At a high zoom, it looks like some kind of dithering in flesh tones that quickly go from light to dark. I would verify that you are using the Adobe RGB, rather than sRGB, color space in your camera. The Adobe colorspace has a larger gamut in the green color spectrum and may not dither as strangely as sRGB. If you are already shooting Adobe RGB, perhaps try the same scene in RAW mode and see if it still happens.
10/20/2004 09:13:41 PM · #14
thanks Riggs, it sure has me stumped, never had this happen before
10/20/2004 09:27:38 PM · #15
It definitely follows the patterns of light--though it's ineteresting that it occurs on the bottom transition light to dark but not the top.

What format was this shot in, raw or JPEG?

Can you post a full resolution extract of one area with spots? (ie., a 640x480 extract at full resolution? Maybe we'll be able to see them better then.
10/20/2004 09:45:47 PM · #16
Originally posted by nshapiro:

It definitely follows the patterns of light--though it's ineteresting that it occurs on the bottom transition light to dark but not the top.

What format was this shot in, raw or JPEG?

Can you post a full resolution extract of one area with spots? (ie., a 640x480 extract at full resolution? Maybe we'll be able to see them better then.


can do
10/20/2004 09:55:05 PM · #17
its was shot in JPEG

' . substr('//images.dpchallenge.com/images_portfolio/17547/thumb/114392.jpg', strrpos('//images.dpchallenge.com/images_portfolio/17547/thumb/114392.jpg', '/') + 1) . '
10/20/2004 10:29:37 PM · #18
I just did some searching out of curiousity. Most comparable problem I could find happened to someone with a 20D, shot RAW but when he used the Canon DPP to convert to JPEG, he got green spots, like a topological map, in what were presumed to be overexposed areas. (That was from a thread on the Fred Miranda site).

So my guess is that the in-camera conversion did the same thing here, where these were little sparkles of overexposed areas. Best guess anyway.

You could try another shot with some overexposure and see if you can replicate.

On the other hand, looking at those dots, it looks like you are all set for the implied lines contest!
10/20/2004 10:32:10 PM · #19
Originally posted by nshapiro:

I just did some searching out of curiousity. Most comparable problem I could find happened to someone with a 20D, shot RAW but when he used the Canon DPP to convert to JPEG, he got green spots, like a topological map, in what were presumed to be overexposed areas. (That was from a thread on the Fred Miranda site).

So my guess is that the in-camera conversion did the same thing here, where these were little sparkles of overexposed areas. Best guess anyway.

You could try another shot with some overexposure and see if you can replicate.

On the other hand, looking at those dots, it looks like you are all set for the implied lines contest!


lol, thanks nshapiro, I will try that
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