Digital Photo Frames
A digital photo frame is an electronic device which is used for
the purpose of displaying photos electronically. The frames are
commonly sold in 7 inch to 20 inch sizes. Although some have
restrictions on them which only allow them to display JPEG pictures.
The majority of digital photo frames are used to present
slideshows, usually with an adjustable time interval. The frames can
also be used by users to send photos to print. Some also support
additional multimedia content, such as movie clips recorded in a
digital camera’s movie mode, MPEG video files and MP3
audio.
The majority of digital
photo frames on the market are also capable of displaying text
files. Certain frames are also able to load pictures over the Internet
from RSS feeds, photo sharing sites such as Flickr, Picasa and from
e-mail. The majority of these frames with such capabilities use
wireless support connections.
Digital photo frames
typically display the pictures directly from a digital camera’s memory
card, although some also have the capability to hold pictures on an
internal storage device. Some allow users to upload pictures to the
frame’s memory via USB connection, or wirelessly through
Bluetooth technology. Less commonly, some digital photo frames
are also able to connect through cellular, such as a mobile phone.
Some frames also allow photos to be shared from a frame to
another.
Most 7 inch (17.8 cm) models show images at
430 x 234 pixels. With some models the width of each landscape
image is stretched to achieve an aspect ratio of 16:9, which results
in noticeable distortion. Built-in speakers are common for playing
video content with sound, and many frames also feature remote
controls. Although digital photo frames are very popular with many
people, there are also numerous limitations currently. Due to a
digital photo frame’s display ration the frame does not always
match the original photo ratio, some pictures displayed are not
always in a satisfactory manner. For example some may be
rendered to small, with black borders, or they may be automatically
zoomed in and randomly cropped. Although such issues can often
be corrected through using software before the pictures are
uploaded to the frame.
In February 2008 there was
an unusual viral outbreak with a number of digital photo frames
manufactured in China were found to be carrying a Trojan horse
which was named Mocmex, this hit the internal data storage on the
device. In recent years there has been a large increase in sales for
digital photo frames, possibly due to the rise in Facebook and sites
such as Flickr. As the demand for the frames has increased, the
prices of these frames has also reduced dramatically, mainly due to
an increase in the amount of suppliers. The frames can also now be
bought from a wide range of places including online and in
supermarkets.