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Rainbow Lori

PostPosted: Sat Aug 06, 2005 11:40 pm
by Slider
Shot this one this morning (with the camera).

Straight up at the sky with flash fill in using my 70-300 Tamron at 300mm.

1/1000s at F6

Although I like the colours of the bird, I am not sure about the purple haze along the branches.

I assume it is from the strong backlight, but how to I stop it from happening in the first place or is it just a photoshop job to sort out?

Image

PostPosted: Sun Aug 07, 2005 1:43 am
by KerryPierce
Nice shot of the bird, Mark. It does look a touch underexposed though.

The purple fringing is a common problem with digital, where ever you have very high contrast, like dark branches against a bright sky. It's similar to chromatic aberration, in that a lot of it is caused by the lens.

Some lenses exhibit the problem more than others. Lens coatings can reduce the problem, as well as stopping down in aperture. It's also said to be partly caused by an overflow on the sensor, from the bright area to the dark area.

There are photoshop actions that can make it easier to reduce/eliminate the issue. Paint Shop Pro 9 has a native tool to handle it.

PostPosted: Sun Aug 07, 2005 8:27 am
by Slider
KerryPierce wrote: It does look a touch underexposed though.

There are photoshop actions that can make it easier to reduce/eliminate the issue. Paint Shop Pro 9 has a native tool to handle it.


Thanks Kerry,

I think it was just beyond the limits of the flash (way up in the tree) and I did bring the exposure up a couple of stops in Nilkon Capture.

I have Paint Shop 9 but have been using Photoshop more. I'll have to have another look at it. Thanks for the tip.

PostPosted: Sun Aug 07, 2005 1:11 pm
by Slider
Here is the same image after using the "Chromatic Aberration" tool. Very handy. Thanks again for the tip Kerry.

Image

PostPosted: Sun Aug 07, 2005 2:14 pm
by meicw
Nice capture, mark I like the diagonal composition.

Regards
Meicw

PostPosted: Sun Aug 07, 2005 4:40 pm
by KerryPierce
Slider wrote:Here is the same image after using the "Chromatic Aberration" tool. Very handy. Thanks again for the tip Kerry.


That looks much cleaner. :) It's a useful tool. Glad I could help. :D