To shed some light to what I am going to say for the rest of the review, before buying this lens, I have been happily shooting with a 550D and my sigma 17-70 os hsm. The said lens was my first sigma lens and I only owned the 18-55 IS kit and the 50mm F1.8 MkII before that. My set up alone will tell you that I am far from being a pro so please consider this when reading my babble below. Now on with the product review (sorry about the long intro)...
I purchased this lens after a long and painful evaluation of what I need more - a super wide angle (for this I want to buy a tokina 11-16mm) or a fast lens that is wider than my 50mm F1.8. I decided that the latter will stay more on my camera than a super wide angle lens. I then went through tons of reviews, example photos, pros & cons evaluations by different experts and users until finally took the plunge on the sigma 30mm.
My main reasons for buying this lens are:
- budget
- speed (I've factored in the possibility that F1.4 might be useless and would be happy with good results at F2)
- focal length
As always, the Amazon delivery did not disappoint. The service from Amazon is not the subject of this review. If I have to rate that, I would easily give it 5 stars.
The lens came with the lens hood and the rear cap. It felt solid in my hands which is very comforting. I liked the balance with my 550D when I mounted it on and boy was it fast!
Immediately I took a lot of photos at different F stops. I tried different lighting situations and different angles. The results were not good. I can understand that it will be soft at F1.4 but what I can't accept is the fact that my zoom (sigma 17-70 os hsm) beats the crap out of this prime lens at F2.8 to F5.6 in terms of image quality! I thought it was just a fluke so I tried them on and on and on again but all subsequent results only pointed to the same conclusion...The colours are more washed out (nope it was not my white balance setting or the exposure) and even at the centre, the images are softer than my other sigma lens at the same setting!
It was such a shame because I was really hoping that this would deliver. I want this lens to work so bad that I hesitated returning it even after seeing the results. I was telling myself, "just imagine how many shots you can take at low light conditions when you cannot step back any further? This might still work. " But when I looked at the images again, I just know that I will have to look for something else.
So why 3 stars?
- build quality is very good for the price (and a lens hood was supplied)
- F1.4 at this price for this focal length is not very often seen
- the images were not total disaster... only that they will leave you wanting for better images (especially as this is a prime lens)
Sorry for the long review but hopefully this has been helpful. By the way, I did return mine and Amazon was fantastic at handling my refund.