> Puzzling details: > The angle of view of the 10mm varies with the mount/camera/chip-size.... > > 154 degrees (180 for Nikon, 167 for Canon) > > http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3336&navigator=6
Link should be http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3337&navigator=6 I am guessing this is a 180-degree-diagonale fisheye. Nikon has a crop factor of 1.5, the Canon of 1.6. Canon crops more, so it will not have a full 180 degree diagonale. > ....while the 4.5mm has a single/fixed angle of 180 degrees.... > > > http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3336&navigator=6 > The 4.5mm is a circular fisheye lens. The image circle is probably small enough to fit in either Nikon or Canon frame. Lars -- .~. Lars Michael /V\ [EMAIL PROTECTED] /(_)\ http://www.larsmichael.com/ ^^ ^^ * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
