Why so blue!

[prozac1968]

Hi,
So many of my bird shots have a blue outline especially one's with white on. This is one i have put on flickr some are a lot worse than this and i haven't even bothered to upload them.
If anyone can help me with what im doing wrong?

[RichardTaylor]

Looks like CA.
Chromatic aberration - Wikipedia, the free encyclopedia

Are you using a filter on the front of the lens?
If so remove it and see how it future pics look.

You may be able to reduce it in existing pics during PPing

[prozac1968]

Hi Richard, thankyou for that.
Im not using a filter. But did have a uv on this lens and have some other oics that are as clear as a bell, maybe i should put it back on.
Will have a proper read of the link you gave me, im a new photographer so not very up on stuff yet,
Im sure it will sink in if i read it enough.
Thought i had changed a setting or something that was causing this.
Thankyou kindly for your help.

[dakwegmo]

What lens are you using? Some lenses are more prone to CA than others, and adding any filters (including a UV) can introduce CA if your lens isn't prone to it, and make it worse if it is.

[prozac1968]

Hi,
Its a minolta af 75/300 macro zoom lens.I dont use a filter at all, but a few years ago when i did i got clear results with this camera and lens and dont understand why the problem now seems so bad.

[dakwegmo]

It seems a lot of people have the same problem with the lens. One guy even says he noticed it on film, but it's more pronounced on digital cameras. Minolta*AF 75-300 F4.5-5.6 D lens reviews

[dakwegmo]

Looking at the bigger image on Flickr, I'm thinking that might be lens flare rather than CA. If that's the case, and you were using a good coated filter before, that could have prevented or minimized the effect.

[prozac1968]

Hi again,
Thankyou so much for all your help and information.
Im going to try and put the filter back on and give that a try.
I took some other photo's yesterday of a dipper in the river and the whole image is so blue and blurred at full zoom, you wouldn't even know what bird it is. It was a very bright day.