FULL COLOUR SCREEN PRINTING (This information only applies to full colour - CMYK files) Unit costs decrease significantly as quantities become higher. (Digital Inkjet is recommended for small print runs) Photographic images and some solid colours can appear 'dotty'. Print resolution is more obvious as the image gets smaller, but not noticeable when viewed from a distance. Matching spot PMS colours can be difficult Small type and logos printed in colour or reversed out of coloured backgrounds are a problem (black is normally OK) External life expectancy (weather resistance and lightfastness) of up to 3 years.