since. By March 2014, about 3 million were purchased each month, about 30 percent of the peak sales total. The decline may have bottomed out, with sales average hovering around 3 million a month. The main competitor is smartphones, most of which have built-in digital cameras and are routinely improved. Like most digital cameras, they also offer the ability to record videos. While smartphones continue to improve on a technical level, their form factor is not optimized for use as a camera, and their battery life is typically more limited compared to a digital camera. Digital photography has resulted in some positive market impacts as well. The increasing popularity of products such as digital photo frames and canvas prints is a direct result of the increasing popularity of digital photography. Social impact Digital photography has made photography available to a larger group of people. New technology and editing programs available to photographers have changed the way photographs are presented to the public. Photographs can be heavily manipulated or photoshopped to look completely different from the originals. Until the advent of the digital camera, amateur photographers used either print or slide film for their cameras. Slides had to be developed and shown to an audience using a slide projector. Digital photography eliminated the delay and cost of film. Consumers became able to view, transfer, edit, and distribute digital images with ordinary home computers rather than using specialized equipment. Camera phones have recently had a large impact on photography. Users can set their smartphones to upload products to the Internet, preserving images even if the camera is destroyed or the photos deleted. Some high-street photography shops have self-service kiosks that allow images to be printed directly from smartphones via Bluetooth technology. Archivists and historians have noticed the transitory nature of digital media. Unlike film and print which are tangible, digital image storage is ever-changing, with old media and decoding software becoming obsolete or inaccessible by new technologies. Historians are concerned that this is creating a historical void where information is being silently lost within failed or inaccessible digital media. They recommend that professional and amateur users develop strategies for digital preservation by migrating stored digital images from old technologies to new ones. Scrapbookers who may have used film for creating artistic and personal memoirs may need to modify their approach to use and personalize digital photo books, thereby retaining the special qualities