Talk:Angle of view

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I'm not an expert, but the first sentence of the article seems incorrect to me. Surely all the sample images took up roughly the same area on the 35mm film? Soundray 21:14, 16 Feb 2004 (UTC)

I don't think it's right either, and I don't remember what page I copied that from (they should both be changed). As I recall, I was talking with someone who was trying to explain to me how to define the term without using a circular definition, and used the chance to dump in some photos I'd taken. I believe the definition as is is clumsy and misleading, if not outright wrong (and the fault is, of course, mine--look at the version history). Koyaanis Qatsi 00:15, 17 Feb 2004 (UTC)

This page could really use a chart converting 35mm focal lengths to angle of view. Also, the formula to do this, with the film size as a parameter.

[edit] Digital cameras

I just added the term 'sensor' as the digital alternative for 'film'. But steve's digicams says "Consumer digicam focal lengths are usually stated in terms of their 35mm film equivalents." So should the given focal length then be recalculated for the formula to work?

By the way, that page also says "For digital SLR cameras with interchangeable lenses it's more difficult as different cameras have different size sensors." Which complicates matters. DirkvdM 10:15, 2 February 2006 (UTC)

I haven't used many digital cameras, so I don't know. But for the two Canon cameras that I do have, the real focal length is printed right beside the lens. Using this focal length, I calculated the angle of view of my Canon ZR90 camera to be 37 degrees. The angle of view I measured earlier was 36 degrees, so the calculation was correct (or at least accurate). Also, the size of the sensor (i.e. CCD) can be found on most detailed webpages about the digital camera. Bowlhover 13:45, 4 February 2006 (UTC)
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