Dark Prints
A commonly reported calibration issue we hear at the lab, is that the prints
received look darker than the images on your monitor. This is usually related to
a monitor, many of which are brighter than prints can be because of the
backlit nature of most screens. Simply lowering the brightness on your monitor
can correct most of these issues. Alternatively, you can purchase a color
calibration kit, which will tell you how much to adjust the brightness.
Mismatched Color Profile
All UnitPrints professional printers and lab machines used the sRGB color space for printing photographs. Please ensure all files submitted to UnitPrints are in this color space, and have this color profile attached.
You can help ensure files are appropriately profiled, by making some small adjustments in photoshop. Click "Edit" -> "Color Settings" in the menubar in Photoshop, and make your color settings match the settings listed below.