Conversion to CMYK is very important for printing successful color photos. Under File, page setup go into screen, use auto screen. Set printer 1016 dpi and screen to 85 lpi. Click on use accurate screens, OK and use same shape for all Inks. Shape should be set at ellipse.
Screens are a very important part of production.
The lack of screens will cause colors of photos to bulk up with ink, reducing contrast and brightness and reducing the over all quality of the image. We also can accept grayscale images. As mentioned above use a high contrast level. The encoding should be binary. Click on include half tone screens and include transfer function.