The print system needs high resolution images according to the
following specification:

Resolution
----------
Along the shortest side:

* At least 
250mm at 300pdi
500mm at 150dpi
approx 3000pixels

* Ideally
550mm at 300dpi
1100mm at 150dpi
approx 6500pixels


Quality & Format
----------------
* Jpeg images saved at maximum quality.
* Clean scans/photographs with no dust/damage etc.
* "Print Ready", i.e. no need for cropping, colour adjustment

Also all images will be converted to Adobe 1998 RGB colour
profile - for best results convert the image to this colour
format prior to uploading.