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Sigma 28-300 f3.5-6.3 Macro

Review Date: May 3, 2009 Recommend? no | Price paid: $350.00 | Rating: 4 

Pros: wide focal range, and that's it
poor focusing in shadow, 28mm is too narrow for an all-purpose on 1.6x

First I thought it's casually good - it focused well in good light (never had focus problems with any of my sigmas on my 400d though), has a wide range of focal. The problems start in shadow. Even in not-so-low light it tends to miss focus, to be precise, it's not missing because it's not even focusing - it just goes around the range, plus the awful sound, it makes the lens really lame.

However, the real reason I sold it, was that I wasn't really using it. 28mm on 1.6x is too long for an all-purpose, and the 200-300 range was rarely used. 18-50 covers my usual focal needs, and as a tele, for this quality of image it was more comfortable to have the 70-300 Sigma. Comparing pics in the same conditions with the 18-50, I felt that 28-300 gets color more washed out and too yellowish, but didn't bother to do a real comparison test.

Don't think it's a good idea to have this kind of lens whatsoever, if you want all-purpose for your first lens, get something in the 18-xx + a cheap tele, or the 18-xxx range. Finally sold it after using only a few times and carrying it around. Buying it was a mistake.

Sigma 18-50mm F2.8 EX DC

Review Date: May 3, 2009 Recommend? yes | Price paid: $430.00 | Rating: 9 

Pros: iq for the price, colors build quality, handling
focus in dark

I've had this lens for over 2 years with two canon 400d bodies and took lots of photos I'm very happy with. Once thought about selling just because whatever, but made my mind that there are no reasons and I'll use it more and I don't regret, it's great as a walkaround and for tourism, good colors. Went on trips with that and it's neat for that.

Don't know if there's some zoom with this light in this price that would beat it, haven't tried the Tamron though. The iq in the corners is not very good so don't know if it'd work for pro shoots, but overally I think it meets the iq/price factor very well and you'll be happy with it.

It has some problems with focusing in dark, it tends to go through all the range and stop on some random place, after a few tries and a bit of light it may finally get near the spot.
The noise, well, you can get used to it, it's for shooting pics not listening to, and it's not as annoying as in some other sigmas I've had.