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| Sigma 30mm f/1.4 EX DC HSM Lens for Canon Digital SLR Cameras | 
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| Brand: Sigma
Category: Photography
Buy New: $425.00 (On sale from $489.00)
You Save: $64.00 (13%)
New (8) from $425.00
Avg. Customer Rating:  44 reviews
Media: Electronics
Fragile: No
Batteries Included: No
Maximum Focal Length: 30
Minimum Focal Length: 30
Shipping Weight (lbs): 1
Dimensions (in): 8.7 x 5 x 4.9
MPN: B0007U0GZM
Model: B0007U0GZM
UPC: 085126300272
EAN: 0085126300272
ASIN: B0007U0GZM
Availability: Usually ships in 1-2 business days
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| Customer Reviews:
| Showing reviews 1-5 of 44 | | ... 9 NEXT » |
 Mis-focus September 6, 2008
I was 0 for 2 with the Sigma 30mm bought at Amazon. Got the first one, focus was terrible. I mean the only thing I could get in focus on my xti was a shot outside at f/8 and infinity. I tried to focus on my birdfeeder at 30 feet and was really blurry (with plenty of shutter speed). Inside was a little better but completely unacceptable compared to my 50mm f/1.8. Sent it back and got another from Amazon. A little better inside. The focus was not so horrible that I could actually tell that it was front focusing. Things that were in focus were very sharp (only a couple of shots of things I wasn't focusing on). Outside I still couldn't get a clear focus on the bird feeder. Oh well, Amazon was great though. No problems with the refund.
Got my Canon 28mm f/1.8 (at B&H) and all of the tests that I did with the Sigma showed that the focus was right on. Taking pictures of my baby girl was hit or miss just like my nifty fifty, but at least I can take sharp pictures of inanimate objects at close and far ranges. Unfortunately, that was not possible with the Sigma 30s that I had tried (on my Xti).
 Shockingly good August 20, 2008
Far exceeded all of my expectations. And my expectations are very high. I still can not believe the amount of detail and the contrast this lens delivers. I have 1.8 20mm Sigma lens, which I thought was pretty good, as long as I applied some sharpening in post-processing. But this thing blows it out of the water completely.
Excellent Lens, August 18, 2008
This lens takes very clear images, its extremely fast and offers low-light image taking. I am using this lens exclusively right now because it offers so much flexibility between indoor and outdoor lighting.
Sigma hits the sweet spot! July 27, 2008
1 out of 1 found this review helpful
What a fantastic lens! I've always used sharpest lenses (17-55 f/2.8, 50 f/1.4 etc). This lens is not only super sharp, but it's like the best L-lenses: it gives superb micro-contrast, bokeh, color and realism.
I use it on my 40D with a Kenko Pro1 UV filter. My favorite apertures are f/2.8 to f/5.6. But, f/1.4-2 are not bad either if there is not sufficient light.
The Sigma AF is not as reliable as Canon ones. My 30mm doesn't front- or back-focus consistently, but AF can miss focus at times, especially if you use it at f/1.4.
My favorite zoom is 17-55 f/2.8. I wouldn't leave home only with 50mm, 85mm primes, but 30mm is much more versatile than those primes and I don't hesitate to use bring lens as my only lens to an event or a trip.
30mm is quite appropriate for portraits, but if you want the ultimate portrait lens, I would recommend Canon 50mm f/1.4 (or f/1.2L).
 Sharp lens, but inaccurate auto-focus July 24, 2008
I've had this lens for about a year and a half now. The lens itself is small and easy to carry in a camera bag. I can confirm that it's also very sharp. When it's manually focused it can be incredibly sharp, but unfortunately the auto-focus is inconsistent and will often front-focus (i.e. the red auto-focus dot will light up on an object, but the picture ends up focusing on something slightly closer than the object supposedly in focus). I've done testing on a tripod and compared it against manually focusing the lens and I confirmed the issue does exist. I've read, however, that Sigma has issues with consistency and quality control sometimes, so it's entirely possible I just got a bunk lens and that others will be fine. Note that Sigma reverse-engineers the auto-focus systems from Canon/Nikon/etc. because those manufacturers don't provide data sheets on how to interface with the camera, so Sigma's lenses *are* more prone to error than the "native" lenses, and I'm certainly not the only one to have this error.
More about the lens: at f/1.4 the contrast is a little weak and it's not as sharp as if you stop it down a little more (to say f/2.8), but it's still better than most zoom lenses at any aperture. At f/2.8 or higher, everything is in perfect focus. This lens has the potential to be the perfect prime lens because it's the equivalent to a standard ~50mm lens after the multiplier of cropped sensor cameras like the 40D/30D/20D and XSi/XTi/XT, plus at f/1.4 it's great in low light. But with poor auto-focus, the lens becomes far less useful than it otherwise would be. Using manual focus it's perfect, though.
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