Apr
05
2010
Digital camera wide angle lenses Canon EOS 20D?
By adminLooking for a digital specific wide angle lens ,reasonable quality, cheap price.At the moment I am using my old slr film lenses and of course digital magnifies the lenses by 1.5 this is okay with my 300mm lens making it a 450mm but my 28 has become a 42mm .I would really like something like an 18mm.
Cheers D
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April 5th, 2010 at 2:51 pm
D, take a look at this lens Tamron 17-50mm f2,8 XR Di II Asp SP AF
Had some decent write up’s.
I’m not sure if you live in the UK but the web site I found it on is
http://www.microglobe.co.uk/catalog/
Tom
April 5th, 2010 at 3:22 pm
Actually, for Canon the magnification is 1.6. So if you want something like 18mm (in 35mm equivalent)
Your choice is:
Canon EF-S 10-22mm f/3.5-4.5 USM
But if you want other choices: (Get them in the Canon Mount)
Sigma 12-24mm F4.5-5.6 EX DG ASPHERICAL HSM
Tamron SP AF11-18mm F/4.5-5.6 Di-II LD Aspherical [IF]
Tamron SP AF10-24mm F/3.5-4.5 Di-II LD Aspherical [IF]
Tokina AF 11-16mm f/2.8
Tokina AF 12-24mm f/4
Tokina AF 10-17mm f/3.5-4.5 Fisheye
If you want a little less wide angle, there are a few more zoom lenses that start at either 16mm, 17mm, or 18mm. There is also the Canon 14mm f/2.8L and Canon 15mm f/2.8 Fisheye. The Canon 15mm fisheye will be somewhat distorted, but not as dramatic as it is on a full frame camera. As of now, there are none that are making EF-S or DX type lenses that are putting their 35mm equivalent focal length on the lenses, so you need to multiply the numbers by 1.6 to get the comparable focal length that you are used to.
April 5th, 2010 at 3:34 pm
It took me a while to figure this out so I’ll clear it up for you: the 1.6x magnifier will be there no matter what. Even lenses that are made for digital (i.e. the EFS lenses) will be subject to the magnifier. So if the EFS lenses are subject to the magnifier, what’s their point? The point is that they only have to cover a smaller sensor. That means lenses can be built lighter, smaller and cheaper. Despite covering a smaller sensor, THEY ARE STILL SUBJECT TO THE MAGNIFICATION. Therefore if you want wide angle you’ll have to get something like a 10mm lens and accept the fact that it’s going to be an effective 16mm. If that’s not acceptable to you you’ll need to get a full frame camera.