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12/18/2004 06:10:15 AM · #1 |
| My wife would like a wide angle lens for her Canon EOS Digital Rebel. She would like to use it for landscapes. Currently she owns two lenses, a Canon 18-55mm and a Sigma 100-300mm. Is there an adapter that could make these lenses usefull as a wide angle, or is this unnecessary? If not, please suggest the types of lenses I should be looking for. Thank you. |
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12/18/2004 08:26:40 AM · #2 |
Originally posted by emmerj01:
My wife would like a wide angle lens for her Canon EOS Digital Rebel. She would like to use it for landscapes. Currently she owns two lenses, a Canon 18-55mm and a Sigma 100-300mm. Is there an adapter that could make these lenses usefull as a wide angle, or is this unnecessary? If not, please suggest the types of lenses I should be looking for. Thank you. |
What do you mean she would like a wide angle lens for her rebel, the 18mm is just about as wide as they come, at least from Canon. If that is not enough she should probably look at the sigma 12-24mm f4-5.6, although I have no experience myself with that lens. |
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12/18/2004 08:34:57 AM · #3 |
There's also a Canon EF-S 10-22mm f/3.5-4.5 USM
Note that being an EF-S it will only work on a Rebel and a 20D and costs about $800.
Slightly wider than the sigma 12-24 |
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12/18/2004 09:28:03 AM · #4 |
Also, I would think that if you go much wider than the 18mm she'll get so much distortion that the results might not quite be what is expected.
E |
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12/18/2004 09:54:08 AM · #5 |
Originally posted by e301:
Also, I would think that if you go much wider than the 18mm she'll get so much distortion that the results might not quite be what is expected.
E |
This used to be quite true. But it seems that DLSRs and their 1.x crop factors have essentially driven lensmakers to "raise the bar" on what constitutes an acceptable amount of barrel distortion for a super wide-angle lens.
Even as wide as they are, these new 10-12mm lenses supposedly exhibit very little of this typical wide-angle characteristic. |
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12/18/2004 09:56:23 AM · #6 |
I assume that what she's looking for is the equivalent of a 20mm lens on a full-frame cam. In a rectilinear lens, that would work back to about 12.5mm (about 84 degrees HFoV and 62 degrees VFoV on the 300D). The dificulty lies in finding a lens at that focal length that is also sharp enough for landscape work. I don't know about the 10-22, but the 12-24 might be marginal in that regard. Any zoom is going to be a compromise where sharpness is concerned.
Another option is a 15mm fisheye. They are very sharp and can be de-fished very easily. the Canon 15mm fish is a very small, light lens that's a joy to use. the HFoV is about 89 degrees, and you do lose a little when you defish.
Yet another option for static landscapes is a 20mm rectilinear lens. The HFoV is about 59 degrees on the 300D, which is roughly equivalent to the VFoV @ 12.5mm. You can then take 2 or three shots in portrait orientation and stitch. You gain in pixels as well, so the total detail in the shot goes way up. Assuming 30% overlap and 3 shots, you're dealing with 2.4 times the number of pixels in the final image.
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12/18/2004 10:37:47 AM · #7 |
Originally posted by e301:
Also, I would think that if you go much wider than the 18mm she'll get so much distortion that the results might not quite be what is expected.
E |
NOT true, check out the Review of the Canon EF-S 10-22mm f/3.5-4.5 Wide angle zoom.
Also I have the 16-35mm f/2.8 lens and there are no distortions, even on my Full frame film camera.
Message edited by author 2004-12-18 10:38:37.
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12/18/2004 10:50:48 AM · #8 |
If you need wider than 18 for non-pro type stuff learn how to stitch photos together to get as wide as you like.
Tim |
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12/18/2004 01:23:26 PM · #9 |
I highly recommend the Sigma 12-24.
All with the Sigma 12-24 @12mm
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12/18/2004 02:02:30 PM · #10 |
| Tamron 17-35mm 2.8 - 4 Di LD is around $500 and is sharp and pretty fast to boot. |
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