However, it saves Raw images in a proprietary file format that requires Canon's software to open. The G1 comes with a 16MB CompactFlash card, and it can save to Type II CF cards, including IBM MicroDrives. What's more, its LED backlight is much brighter than conventional fluorescent backlight, is completely flicker-free, and its brightness may be adjusted through the menu. The G1 is a solidly built mid-sized model that has the look and feel of a quality 35m rangefinder camera. While it can be operated one-handed, the placement of the zoom lever in front of the shutter button makes it difficult to operate easily unless held with both hands.
Buttons are for the most part marked with easily-recognizable words, icons or abbreviations.
Both the battery and memory-card doors are easy to access, and the interface and power connector are protected by a rubberized flap. The camera can be operated on full auto, aperture or shutter priority, or full manual. The user can also customize image contrast, sharpness and color saturation. Unlike most digital cameras, the G1 can separately lock exposure or focus, for more precise control. Although users can create folders and specify the file number, there's no provision for giving it an English language name.