Resolution, colour space and file formats for photo products

Saal Digital's software supports the popular file formats JPEG and PNG. However, in order to transfer your digital images as quickly as possible, we recommend using JPEG format as it significantly reduces image data.

RGB colour space
For better results, you must attach your pictures in RGB colour space. Learn more about colour spaces here: sRGB, Adobe RGB and ProPhoto RGB.

JPEG files
To reduce the file size and increase the transfer speed, you can save your images as JPEG files. For an optimal quality, we recommend quality level 90. Excessive compression (under 70) leads to a greatly reduced picture quality, especially for striking colors, such as red, as the result will be very noticeable. When using Adobe Photoshop, you can compress your images with a ratio of 8 or higher. These values do not lead to a visible loss of quality or detail. Uncompressed files (e.g., TIFF or Photoshop PSD) can easily be converted to compressed files by simply storing them as JPEG files.

Optimal file resolution for high-quality prints
The best file resolution is determined by the image details, the file size and the maximum possible resolution of the output device.
A list of the respective production resolutions of our products can be found by going to our website, hovering over the corresponding Product in the upper menu, and going to "Professional zone" in the submenu that shows up.

If you have a fast Internet connection, larger files are not a problem
For excellent picture quality, you should use a resolution of 300-400 dpi (120 pixels/cm). At this high resolution, the files are larger than at a lower resolution. For good output quality, you should use a resolution of 200 dpi (80 pixels/cm). The minimum resolution is 100 dpi (40 pixels/cm).

Edit images for optimal output quality
The output quality depends on the image compression and the file formats of your images. The file format when downloading images from the digital camera is usually JPEG (this file format is used because of the limited memory of the digital camera). Any image compression will result in loss of detail, even if they are not visible to the naked eye. To avoid further detail loss, edit your images as follows:

  1. Download the images from your digital camera (with the compressed standard file format supported by your camera)
  2. Save your image in a non-compressed file format (e.g., TIFF or Adobe PSD). This allows you to edit and modify your image without recompressing after each save, which could result in loss of detail.
  3. Once you have finished editing your image, save it to a compressed file format (JPEG) to reduce the file size.
  4. Then, send the compressed image(s) via our software or Online Shop to our specialist laboratory. The smaller the file, the faster the transfer!

The optimal resolution you need for your product can be found by going to our website, hovering over the corresponding Product in the upper menu, and going to "Professional zone" in the submenu that shows up.