14mm and 15mm comparision

Hey guys
Im trying to work out if I can get away with hiring a 15mm for a shoot next weekend or if im gunna have to drop some cash and hire a 14mm.
does any one have (or can point me in the direction of) a comparison between the two Ideally on a 1.3 crop camera. not too fussed about which one is sharper I just need something that is WIDE and fast

If you mean EF 15 F/2.8 and EF 14 F/2.8, you are actually talking about two completely different lenses. The 15 is a fisheye, and has a 180 degree diagonal view on FF, the 14 mm is a rectilinear UWA.

Do you need a fisheye or a "normal" UWA lens?

Kind regards, Wim

Well, the 15 is a fisheye lens, the 14 L II is not...

and the earth is round and the sky is blue

your point being?

Zilly wrote in post #7928941
and the earth is round and the sky is blue

your point being?

with an attitude like that, the point may be, "go find it yourself".

http://www.the-digital-picture.com …L-II-USM-Lens-Review.aspx

http://www.the-digital-picture.com …-Fisheye-Lens-Review.aspx

Halfway down, you can see a picture of the 15mm FE, 14mm II, and 16mm on a 16-35mm f2.8.

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On a 1DII body, 14mm = 101.8 degree diag. and 15mm = 97.9 degree diag.

In comparison, on FF that translates to about 17.5 mm vs. 19mm lenses. Go play with a FF body with a 17-40mm lens and determine just how 'cannot live without' it would be to have 1.5mm missing at the short end.

If the real difference is 'fish eye' vs. 'rectilinear', then you should be ignoring the FL difference and paying attention only to the fact that straight lines are curves when they do not pass thru the center of the fisheye lens, as depicted in the prior post.

Wile_E wrote in post #7928968
with an attitude like that, the point may be, "go find it yourself".

Seconded :/