what causes this blue outline?
Oct 30, 2014 17:01:23 #
I've noticed a blue outline on some of my bird pics when set against a blue sky (left side of woodpecker). Sometimes I get it, sometimes I don't. What causes this, and what, if anything, can be done to prevent it. Shot with SX50, f/7.1, 1/500sec., and ISO 160. As always, thank you for your help. Donnie
Oct 30, 2014 17:08:15 #
Wait for the sky to turn orange at sunset?
or,
Could be that you are sharpening your photo too much?
or,
Could be that you are sharpening your photo too much?
Oct 30, 2014 17:11:24 #
Oct 30, 2014 17:12:43 #
Bret wrote:
Look up chromatic adoration.
Chromatic Aberration :)
Oct 30, 2014 17:13:15 #
Kingmapix wrote:
Wait for the sky to turn orange at sunset?
or,
Could be that you are sharpening your photo too much?
or,
Could be that you are sharpening your photo too much?
No pp except for cropping.
Oct 30, 2014 17:14:32 #
Oct 30, 2014 17:15:07 #
Linda From Maine wrote:
Chromatic Aberration :)
Thats more like it :-D
Oct 30, 2014 17:15:45 #
Linda From Maine wrote:
Chromatic Aberration :)
Dang and I haven't even had a beer yet...LOL
Oct 30, 2014 17:21:09 #
Bret wrote:
Dang and I haven't even had a beer yet...LOL
That's the problem! Cheers!
Oct 30, 2014 17:21:57 #
Bret wrote:
Dang and I haven't even had a beer yet...LOL
Try again later then Bret :lol:
Oct 30, 2014 17:29:28 #
Sugar'sDaddy wrote:
I've noticed a blue outline on some of my bird pics when set against a blue sky (left side of woodpecker). Sometimes I get it, sometimes I don't. What causes this, and what, if anything, can be done to prevent it. Shot with SX50, f/7.1, 1/500sec., and ISO 160. As always, thank you for your help. Donnie
I note the light is coming from over the right shoulder and it is only around the shadow (left) edges that the deeper blue line occurs (both the bird and the wood). Moreover the 'line' is uniform in width. So it must be happening from some property of light. The 'line' being enriched in blue can also be said to be depleted of red. The only property of light that I can think of that is wavelength dependent is refraction. There are others but my brain is blanking at the moment. The long wavelengths have higher indexes of refraction, so the 'line' is red impoverished because of being refracted away. Am I full of BS on this?
Oct 30, 2014 17:33:22 #
John_F wrote:
I note the light is coming from over the right sho... (show quote)
Pretty spot on I reckon
Oct 30, 2014 17:36:07 #
Oct 30, 2014 17:45:39 #
High contrast...out of focus...your camera cant tell what color that is supposed to be. Guess what color is right smack dab in the middle?
I sure hope I spelled dab right...LOL
I sure hope I spelled dab right...LOL
Oct 30, 2014 17:47:12 #
Bret wrote:
Dang and I haven't even had a beer yet...LOL
No time like the present.
:lol:
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