Screen size
For digital photo frames, this is the diagonal of the LCD matrix that is actually visible. Measured in inches (inches).
Now on the market there are photo frames with such a diagonal:
6" and less,
7",
8",
9",
10" and
more.
Resolution
For photo frames, as well as for other types of electronic devices using LCD or other displays, the resolution is indicated in pixel points (for example, 800x600 pixels). The higher the resolution, the clearer and more realistic the picture on the frame screen.
Now on the market there are photo frames with the following resolution:
480x234,
640x480,
800x480,
800x600,
1024x768,
1600x900Contrast
This characteristic indicates the ratio of brightness levels between the brightest white and darkest black colours that the display displays. The higher the contrast level, the richer the displayed colour palette of the display.
Supported file formats
All photo frames support graphic formats, the so-called. "picture" files (for example - JPEG, GIF, BMP, PNG, etc.). Often photo frames are capable of playing sound (MP3, WMA, AAC, OGG, etc.) and video files (AVI, MPEG4, etc.). These models are usually noticeably more expensive and come with a built-in speaker/speakers.
Supported memory cards
Many modern photo frames have a slot for flash memory cards. This allows you to view photos and videos, listen to music without the "mediation" of the computer. Exporting files from a PC in this case is not required - you can organize viewing of data from a camera, camcorder, etc. in a matter of seconds.
Modern photo frames support one of the following memory card formats:
Secure Digital (SD),
Compact Flash (CF),
Memory Stick (MS),
xD-Picture (xD),
MultiMedia Card (MMC).
