Iv got a Canon digital ixus i and i need some tips. Its a 4 MP camera and is great for point and shoot photos. Or so i thought.

Look at the below photo:



Notice the wheels, round the alloy where it meets the tyre, a blue tint.

I get this discolouration a hell of a lot these days. What is it, what causes it? What can i do to stop it?

Cheers

Lens problem? have you cleaned the lens?

My people call it "a highlight".

not touched the lens, seems clear and not dirty at all

heres a section in the native res:



The camera is in the highest res and quality itll do. Kinda expected better from canon.

Quote from: maximusotterMy people call it "a highlight".

Nothing constructive to add? :-)

Quote from: Binary Shadow

Quote from: maximusotterMy people call it "a highlight".

Nothing constructive to add? :-)

Erm, my comment is the only constructive one in this entire thread. Finely textured black, such as that of tire sidewalls, may get blue highlights do to optical dithering. Note a blackbirds wings in the sun.

its not just around the tyre tho its round the tree in the backgroud as well, its pretty messy if you zoom in at all

See if the quality is set to anything but the highest setting, youre probably just sensitive to compression artifacts.

tis set to max res and superfine (max quality). dunno what quickshot is but might try turning that off for a bit.

Have uploaded the full image as it comes off the camera:

http://homepage.ntlworld.com/a.woodford/imagef.jpg

Take a look, notice around the tree top left, top of the roofs. if you zoom in on it its orrible.

QuoteAnother enhancement, called QuickShot, allows users to take a very fast picture without having to wait for the camera to focus. The camera just switches to infinity and fires.

Sounds like a bodge to me lol

U-huh.

Its called Chromatic Abberation.  Nothing to do with pixels or file size - just poor lens qualiteh, tbh.

http://www.dpreview.com/learn/?/Glossary/Optical/chromatic_aberration_01.htm

great my poor quality Ã,£220 (when purchased) camera fluffs every photo i take.. great!

Ã, 
Go into your image editor, draw a circular mask (marquee tool) loosely around the rim and desaturate the Blues.

Before:



After:

oh... sweet cheers