We had a HP Photosmart 300 and one Windows PC, photos came out great. Then we changed to MAC, have now 2 MACs and problems when printing photos. The colours are just wrong, sometimes too blue, too green, then lack definititon. This happens from both computers, not just one. Did all the calibrating, cleaning of print heads etc but no change so we thought the printer was the problem. Have now got a new printer HP Photosmart 7460 and problems again, colours are wrong and photos lack definition, everything looks very smooth. Photos are perfect though when looked at on iPhoto. Anyone have an idea what the problem is??? It is really annoying me as I have lots of photos to print but can't do anything.