Description of Print Settings 51Printer Driver Functions (Macintosh)(2) [Print Quality]Move the slide bar to adjust the balance between print quality and speed. Moving thebar to the right enhances print quality, and moving it to the left increases printingspeed.(3) [Halftoning]Select either [Dither] or [Diffusion] ink dot configurations.(4) [Photo Optimizer PRO]Optimises the colour of images taken from a digital camera or scanner. It is especiallyeffective for images affected by colour imbalance and over- or under exposure.When printing several images on one printing page, optimisation is usually applied toeach image according to its requirements. However, if the image data has beenmanipulated using cut and paste, rotation or other such operations, group optimisationof all images on the page is recommended. In such cases, select the [ApplyThroughout Page] check box.