Reviews and Problems with Sigma 30mm F1.4 EX DC /HSM
Showing 1-10 of 36
"FOCUS" Sigma-son, "FOCUS"
29 August 2013
Summary: I wish this len would learn from Mr. Miyagi, "FOCUS." At close range, about a foot, it works great. But when you step back from that distance and take a picture of your object of interest, ITS NOT IN FOCUS. I've tried different f-stops and shutter speeds, and still it is not truly in focus. My purpose for this lens was to get more wide angle then my NIKON 50mm 1.8f on my D5200. If you are planning to use this as your go-to lens, overall you will be disappointed.
very soft.terrible quality control overall, do not buy or try at least more
8 March 2013
Summary: tested 4 of these lenses , they were all VERY SOFT. recently i borrowed the same lens from a friend to give it another try. that one was sharp. also recently Sigma advertises with ; "enhanced quality control" . nice they more or less admit the previous era was terrible! And indeed the latest sigma's (end 2012, start 2013) are generally much better in IQ and QC.
Summary: The picture quality is amazing, very vibrant and crystal clear. Going to 1.4 is a huge plus for video in low light... however, only buy this if you plan to buy a new one every 3 months. Since for video we can't rely on autofocus and have to manually, constantly, be sliding the focus ring around, it breaks.
Summary: I read all the reviews online and comments in this area for this lens and I decided to give it a shot. It appears well built and connected quite securly to my t3i. I was having difficulty with a bit of front focusing on my first copy but I decided to give it a long trial period. Well I went out on a shoot and found that at key moments (when I wanted to focus on a ring) it would put other things in focus and not where I had actually locked focus on.
Excerpt: I picked up a copy of this lens (for my Canon T2i) and was initially impressed by the image quality it produced. After closer inspection I found that the lens front focused quite a bit which is a dealbreaker with a fast prime and shallow DOF. I returned it and tried another copy, this one completely failed to autofocus at all. If you risk buying this lens, do full testing immediately, there is a strong likelihood it will be faulty.
Summary: I purchased this lens as a good low light and portrait lens. Unfortunately, after thorough testing the sharpness was not up to par. At first, I thought it was me, so I took a few sample shots. My first sample shot was a close distance (5 ft) handheld. I had a low light shot using f/1.4 and 1/100 and my focus points were a little shaky. Most likely my fault since it was hand held. My second sample shot, I got a tripod and stopped it down to f/2.8.
Summary: I had very high hopes for this lens. And, out of the box, beatifully constructed. Unfortunately, it front focuses repeatedly. This is a known problem with some sigma 35/camera combo's. See the reviews on photo.net The body used was a d90. I emailed sigma-they offered to calibrate it, AFTER I filled out the warranty. Meaning I could not return it. If they were unable to calibrate it, I could not return it. Not a risk I wanted to take.
Summary: I wanted to love this lens. Sadly, it simply doesn't perform well. The focus issues with this lens have been written about ad nauseum, but I found that the focus issues manifested themselves differently than what I'd read here. It's not that the lens doesn't focus - it's that it focuses on the wrong thing. I was shooting this lens on a D40, which has five-point autofocus.
Summary: Just bought this lens a week ago from 47 St Phot, the service is good and delivered fast but the Sigma Lens itself had problem. I took at least 500 test shots at low lights (I tested at F/1.4/1.6/1.8 to F/2.8, ISO from 200 to 1600) on my D90. Auto focus is very inconsistant, most of the time, front or rear focusing(I layout a newspaper with an angle and mark a circle as my focus point), sometimes it kept focusing without lock(motor keeps running).
Summary: I used this lens on my XTi with good results. After upgrading to a 40D, many of my shots were not focused properly. I thought it was the camera but it (apparently) was not. The lens is great from f4 to f16. But from f1.4 to f2.8 the images were not sharp. This was with careful testing using tripod, focus charts, remote shutter release, etc. It's not my failure to understand depth of field. I returned the lens.