Macbook Pro display problem

[JonBuoy]

I wonder if any of the YACF Mac users could help a lowly PC user

My sister's MacBook Pro4.1 is a thing of beauty but... it displays pictures badly.  Photo's uploaded from a camera or viewed on Flickr etc have an extremely 'blocky' appearance to them.  This is particularly noticeable on large areas with subtle changes in shade - they just aren't subtle.  On a PC I would suspect that the colour pallette was set too small. I have checked that the display is set for 'Color LCD' and 1440 * 900 but on a Mac I just don't know what to do next.

[Jaded]

Sounds like aggressive jpg compression? What size are the files in KB, and in pixels?

[JonBuoy]

Sounds like aggressive jpg compression? What size are the files in KB, and in pixels?

...is the correct answer !

I think that the small selection that I looked at were indeed a bit too jpegged.

Further investigation produced a "They aren't all like that"  -  and indeed they aren't.

Thanks for the reply and apologies for wasting your time.

[Jaded]

 

No problem.