Resolution, color space and file formats for photo products

Saal Digital supports the popular file formats, JPEG and PNG, in the software. In order to transfer your digital images as quickly as possible, you should use the JPEG format as it significantly reduces the amount of data.

RGB Color Space
Please attach your pictures in RGB color space.
Learn more about color spaces 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 of your pictures, we recommend the quality level 90. Excessive compression (under 70) leads to a greatly reduced picture quality, especially in striking colors, such as red, 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.

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 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 compression of images 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: Download the images from your digital camera (with the compressed standard file format supported by your camera). 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. Once you have finished editing your image, save it to a compressed file format (JPEG) to reduce the file size. Then, send the compressed image(s) via our software or webshop to our specialist laboratory. The smaller the file, the faster the transfer.

The optimal resolution you need for your product can be found on the corresponding product pages under the "Dimensions" section.

 

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