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Sigma 105mm f2.8 EX Macro 1:1 Lens

05_105mmEX_1_
Review Date: Jan 27, 2009 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: Extremely sharp, very nice colours, metal hood, good weight.
Cons:
Clutch focusing system (but this is more of a preference than a negative). Lens length is not constant throughout focusing range.

On a full frame SLR, this is a wonderful portrait lens as well a macro lens. Colours are a touch warm which is nice in comparison to some other lenses. It also makes for a decent telephoto on a APS-C as the lens becomes a 168mm.

Build quality is extremely good, and with the metal hood the lens has faired well against the rigours of long treks, car boots, a few drops and even WYD.

A highly recommended lens, especially considering the price.

A few sample images:
http://patrick-lee.smugmug.com/gallery/5527684_rWFo6#338449507_Qpfmh-A-LB
http://patrick-lee.smugmug.com/gallery/5314382_pkxrr#324443943_MVSMV-A-LB
http://patrick-lee.smugmug.com/gallery/5314382_pkxrr#324449457_Wq8Xv-A-LB


 
Sigma 17-70mm F2.8-4.5 DC MACRO

137_small
Review Date: Nov 13, 2008 Recommend? yes | Price paid: Not Indicated | Rating: 8 

 
Pros: Price, range and image quality.
Cons:
It's a DC lens, would love something like this for my 5D. No HSM and I also wish it was an EX lens. Only f/2.8 at 17mm but shouldn't complain at this price.

This is an almost perfect walkaround lens. Image quality is pretty good for zoom lens of this range and it's a nice weight too (especially compared to my 23-70 on a 5D).

For Sigma lenses, 'macro' usually means simply that you can get closer to the subject. But closer than what? I haven't seen a 17-70 non-macro version. In any case, at full zoom, you can get about 1cm from the subject which makes for some decent close ups.

Most of these images were taken with the 17-70:
http://patrick-lee.smugmug.com/gallery/2771602_teAq6#147531087_Yy6NT

Focusing hasn't been too much of an issue and it's generally been quite fast even though it doesn't have HSM, there's been a few times when it hunts but not enough to warrant any concerns.

Many colleagues have been pleasantly surprised at the image quality as they had assumed the pictures were taken with one of my L or EX lenses.

The build quality of the lens is it's one let down. Not that's bad for it's price, but I think that Sigma could have made this an EX lens, making it a killer lens for crop cameras.