Sigma 30mm F1.4 EX DC A-mount lens review by amarston22
|amarston22#27580 date: May-20-2016|
flare control: 5
|ownership:||I own this lens|
|compared to:||Minolta 50/1.4 and 1.7|
Minolta 50/2.8 RS Macro
Sigma 18-200/3.5-5.6 DC II HSM
Sony 18-55/3.5-5.6 DT SAM
Sears Pentax M42 28/2.8
|price paid:||$220 new in box|
Mostly well built
Fast and accurate AF
45mm APS-C Equivalent
|negative:||Slight play in focus ring when manual focusing|
My copy has slight backfocus issue
CA is on the low side of average for my copy of the lens, but easily fixed in post.
|comment:||I was torn between this lens and the newer Art lens, but I found this new in box for less than half of the new version, and I couldn't justify the extra dough so I got this one.|
First, this lens fills an important empty spot in my APS-C range of prime lenses. This produces a very close to "normal" view equivalent to 45mm full frame. There are few options to get this aspect for APS-C, and virtually none that are f/1.4. I am very happy with this lens so far.
I did notice what others have said about the corners being "soft", however the softness is so slight that I wouldn't even subtract points for it. If you stop down a stop or two it goes away anyway. There is some noticeable CA/fringing in my copy but it's easily removed in post. There is also minor barrel distortion, but there is a camera raw correction profile that works well. Overall, IQ is great, but not top notch. Well worth the price I paid, but I'm sure the Art lens outperforms this.
Construction quality is excellent all over, except for the minor bug of the focus ring having just a tiny bit of play in it. While shooting MF, I haven't found it to be an issue, though I do notice it. The finish is attractive and the lens looks professional and solidly built. I would give it 4.5/5 if it was an option.
As others have noted, there is a backfocus issue with this lens, at least in my copy. My a77ii has a microadjustment feature, but annoyingly, I haven't been able to nail down a proper setting. Most of the time I get a slight backfocus, however about 20% of the time I get a slight frontfocus. I have the profile set to -5 and that's roughly correct, though I'm sure it could be fine tuned better if I spent more time with it.
The included hood works great, but flare control is also a little better than average for this type of lens. Which is to say it's fine as long as there isn't a bright light shining right in your lens.
Overall I'd rate this lens 4.5/5. It could be a hair sharper, but if it had HSM focusing and the backfocus problem was fixed it would be a perfect 5!