Question about a Photo Phenomena

December 10th, 2011
I know there's a lot wrong with this photo, but I have a specific question about the greenish splotch on the kitty's body. I've had this happen before, but I'm not sure what creates it.

What have I done to make this happen? How do I avoid it? Advise/ information is much appreciated.

December 10th, 2011
lens flare... use a hood or a coated lens and it goes away... need to get to work or I would explain the physics... google can too

some lens flare more than others... it means you have a strong light source on the edge or just off the edge of the frame....
December 10th, 2011
@icywarm Thank you. I thought lens flare was something else when the sun or light source flares out from the source. I never would have thought of this green stuff as flare. Good to know.
December 10th, 2011
Actually...I bet you had a filter on your lens. Probably a UV filter? Maybe a CPL? Lens flare is usually a tint of yellow or orange cause it is the sunlight that is being refracted. However, a green flare usually means it's from a filter. I get it a lot while shooting interior photos from my UV filters on.
December 10th, 2011
It happens to me too when I have the UV filter on (which is pretty much all the time). I only noticed it after I uploaded but there's a slight green tinge under the baboon's right eye here: I reckon it's exactly what happened to your kitty.
December 10th, 2011
@jasonbarnette @deens
Thank you. I do have a UV filter on. So the filter is refracting the light?
December 10th, 2011
@herussell Yes. It's called Ghosting. Did you see the burning light bulb filament I uploaded about a week ago? The first time I tried that I was getting these horrible green flares right in the middle of the photo, which ruined the shot. That's when I first discovered that sometimes you need to take the UV filter off the lens.
December 10th, 2011
@jasonbarnette Cool. That's good to know. Especially because I also want to try that light bulb photo someday and in the meantime I'll take off the filter from time to time. :)
December 10th, 2011
@jasonbarnette What is the point of having a UV filter on in the first place?
December 10th, 2011
@kimmistephens Technically, it reduces some of the UV glare to bring out better colors. But only so slightly that as far as I am concerned it is unnoticeable.

Realistically, it's a nice way to protect your lens. You can break the plastic parts and scuff the lens hood but if you scratch that glass lens you're done for. And if you buy good UV filters that are made of glass instead of plastic they never hurt your image quality. It's just protection, that is all.
December 10th, 2011
@jasonbarnette I could not agree more. I would rather ruin a 15-30 dollar filter than have to replace a lens which would cost hundreds. I have 2 spare filters in my bag for just that reason.
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