Posted by Spex on 12/21/07 16:07

>> Chromatic Aberration.
>>
>> Around contrasty areas you'll see green and purple or blue and red lines
>> caused by the refracting at different wavelengths. It has always been
>> there just not as obvious in the low res world of SD.
>>
>> Lens can be coated to reduce this but it can lead to ugly bokeh if the
>> lens is over optimised.
>
> It is a lens design (or alignment fault) characteristic, not a matter
> of coatings...

That's contrary to Canon's claims of using flourite elements and
coatings to reduce CA.

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