Archived posting to the Leica Users Group, 2004/03/29[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]
Wouldn't it be more useful if we could us the 'angle of view' for any given lens on the particular body that we happen to be using it? In trying to explain to people interested in your typical digicam I often find myself saying "It will give you a similar angle of veiw as 35 to 105mm lenses on a 35mm camera" and then I realise how absolutely useless that statement is if to the typical point and shooter who doesn't even know the difference between a telephoto lens and a zoom. If I could say instead this lens will give you a maximum frame field of view of ~35 to ~12 degrees it would probably seem simpler. Most people can grok simple angles. For lenses on the Nikon DX sensor for example: Width = 15.6 mm, Length = 23.7 mm, Diagonal = 28.3734 mm focal length Horizontal angle of view 14.0 80.4911 16.0 73.0491 18.0 66.7165 17.0 69.7575 20.0 61.2935 24.0 52.5557 28.0 45.8776 35.0 37.4093 50.0 26.6662 60.0 22.3443 70.0 19.2165 85.0 15.8731 100.0 13.5161 135.0 10.0329 180.0 7.5331 200.0 6.7816 300.0 4.5240 400.0 3.3938 500.0 2.7153 600.0 2.2629 This site would be useful for such discussions: http://www.sweeting.org/mark/lenses/#calc Carpe Luminem, Michael Eric Berube GoodPhotos.com On Mon, 29 Mar 2004 12:15:06 -0800 (PST), email@example.com quoth unto the boundless Ether... >but that won't happen and this equivalent stuff is because of the >overthecounter point and shooters. There's no such thing as >standardized format 6x6, 645, 6x12, 6x7, 6x9, 4x5, 5x7, 8x10, 8x17, >11x14, 12x20, aps, 120, 127, 220 and then 35mm by which all lenses >should be refered - it's ridiculous.