On Jan 1, 2011, at 22:17, David Chisnall wrote:
> 
> On 1 Jan 2011, at 21:22, Banlu Kemiyatorn wrote:
>> 
>> Looks like low quality jpeg compression to me. 
> 
> Except that the screenshot is a png...

There are severe haloing artefacts around all edges in that picture, not just 
text. There's also a very faint, blurred grid of about 30x30 px squares 
(typically an effect of buggy sampling code), but little to no noise. It looks 
more like a sharpening filter than JPEG artefacts.


-- 
Jens Ayton


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