Most people I know use APS-C sensor cameras. When they talk about different lenses they use I find myself trying to figure out what their field of view is compared to lenses I use. One day I got sick of the math and made myself a cheatsheet This just has the current and announced focal lengths of native :43: lens. If you want me to add more, let me know. https://docs.google.com/spreadsheet/ccc?key=0AkwoSMdfeImLdFNURU5NWkZYMi1KLUtTRDROekpVYVE Side note: I tried to do bbcode tables, but apparently they don't work here.