Scanning
The following options exist when printing with Friesens:
- Friesens scans all your images and provides Hi-Res images, which you then place into your document or edit as needed.
- Friesens scans all your images and provides you with Lo-Res OPI (automatic replacing Lo-Res file) images, which you then place into your document.
- You scan and place Lo-Res FPO (for position only) images into your document and have Friesens perform all scanning and placing of the Hi-Res images.
- Acquire your own Hi-Res images, and edit, manipulate, and retouch them yourself before placing them in your layout.
If you work with your own Hi-Res images, make sure you are ready to assume full responsibility. This includes system colour calibration, contrast and tonal range adjustments, dot gain compensation of final output and press, scanning resolution and clarity, sizing, and cropping.
When working with images supplied by Friesens maintain the ICC profile which is embedded in the image. Changing the embedded profile will change the colour. All supplied images should include relative embedded ICC profiles.
Even though you may feel confident in these areas, we recommend that you send at least a few samples for us to proof so that you are able to critique them more accurately.
When resizing an image in a layout program, be aware that resizing the image will affect the effective (or true) resolution. An image scanned at 300dpi and placed at 200% has an effective resolution of 150dpi (effective resolution is equal to the scanned resolution divided by resize percentage). When Friesens preflights your files, we will be looking at the effective resolution and not the resolution at which the image was scanned.
- Grayscale and colour images
- 200dpi minimum
- 300dpi recommended
- Bitmapped images
- 600dpi minimum
- 1000dpi recommended
- FPO (for position only) images
- 72 dpi for any line screen
To minimize file sizes, do not scan several items as one scan and then place and crop in the layout program. Perform all cropping and scaling of images while they are being scanned, or in Photoshop. Make sure images are mounted straight on the scanner.
Save all colour scans as CMYK or RGB with an embedded ICC profile. Be aware that the on-screen appearance of images may not an exactly represent the printed result. When converting images to CMYK we recommend using our ICC press profile. See the Colour Management section for more details on using profiles.
Grayscale images should be adjusted for the correct highlight and shadow values. As a general guideline we recommend highlight and shadow values of 2% and 97% for images that will be printed on the sheetfed press. For images that will be printed on the web press we recommend highlight and shadow values of 3% and 95%. When adjusting the midtones of Grayscale images using our ICC press profiles will help achieve better results. See the Colour Management section for more details on using profiles.