Camera

Dialog in a forum that discusses how to get stars in focus. Most interestingly, this dialog points out that the lens system changes with temperature. Therefore the camera allows you to set the focus beyond infinity, to ensure the infinity point can be achieved at all specified temperatures.
http://www.dpreview.com/forums/post/11449003

Spiegellose Kameras lösen digitale Single Lens Mirror Reflex (SLR) ab
http://m.welt.de/wirtschaft/webwelt/article109279243/Systemkameras-been…

Kameratypen:
http://www.henner.info/spiegel.htm

Tips to Keep Your Digital Photos Organized - Techlicious:
http://www.techlicious.com/how-to/10-tips-to-keep-your-digital-photos-o…