On Sat, 15 Nov 2003 22:16:51 +0200, Feroze Kistan wrote: >Hi All, > >Its summer right now and it rains every second day or so. Today I saw the >most perfect rainbow, didn't have my camera with me as I was driving, and it >was gone in a few minutes anyway. But it will come again. > >Any tips for shooting rainbows, exposure times, film etc....
I can't remember if you are supposed to over expose or underexpose to get better saturation in rainbows, it's one of the two. This is why bracketing was invented. Technical bits about rainbows Rainbows are formed at an angle of 42 degrees at your view point, from the angle of the sun's rays (facing away from the sun). If you want to photograph a full semi circle rainbow you will need a lens with an angle of view of atleast 84 degrees (if you happen to be lucky enough to see a double rainbow you will need a 102 degree lens - double rainbows form at an angle of 51 degrees). You will also only see a full semi circle rainbow at or near sunrise or sunset. As a point of reference a 28 mm lens has a horizontal angle of view of 65 degrees (75 degrees corner to corner). Leon http://www.bluering.org.au http://www.bluering.org.au/leon
