There are many rules of thumb for print resolutions and the DPI you should print at, but where do they come from? We’ll take a quick look at the science behind those rules and how to calculate the real requirements for any given situation.
I’m just going to throw this out there; in photographic conversations, focal length doesn’t mean what most think it does. Moreover, it almost never means what the optical engineers means when they say focal length. I’d even go as far as the say the real meaning of focal length is one of the dirty secrets […]
The distance scale has long been a useful tool for photographers since it provides a good deal of information about depth of field and focusing quickly and easily. Though it could be argued that autofocus has diminished the need for a distance scale it continues to grace most mid- and higher-end lenses, though in its […]
Astrophotography is a specialized area of photography that looks more like astronomy than photography. On a lark, with out any serious astronomy gear, I decided to turn my camera and a fast lens towards the heavens to see what I could photograph.