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Sigma 180mm f3.5 EX APO Macro IF HSM

180_3_5EX_mdl_1_
Review Date: Oct 9, 2007 Recommend? yes | Price paid: $719.00 | Rating: 10 

 
Pros: Sharp - HSM=fast, accurate focusing - focus limiter switch - couples great with a 1.4x TC
Cons:
bit heavy, but all 180 macros are,

This lens is one of my most versatile lenses. I've had it for over three years now without a single glitch. I have used it for portraits, snakes, bugs (of course), flowers and most impressively, hummingbirds in flight handheld with and without the Sigma 1.4TC. The HSM is that good. Here is the gallery if you're interested:

http://www.pbase.com/iangreyphotography/hummingbirds_in_flight

This lens is a bit heavy, as all 180's are, so it takes some getting used to. But it is a gem especially at the price.


 
Sigma 20mm f/1.8 EX DG Aspherical RF

20_f1_8_1_
Review Date: Jul 24, 2007 Recommend? yes | Price paid: $410.00 | Rating: 9 

 
Pros: useable f/1.8, insanely sharp by f/5.6, FF compatible, solid build
Cons:
No way to grip lens without constantly switching focus mechanism

This lens is good at what it does. It is the only 20mm f/1.8 lens for dslr's on the market. Surprisingly, this lens ranks among my sharpest (135L, Sigma 180mm macro, 300mm f/4 L IS, 85 f/1.8) and is freakishly sharp at f/5.6. It is a good landscape lens and I use it for hdr's and panoramas as well. Also good for band pics in tight quarters.

Here's a link to comparative sharpness tests:

http://www.pbase.com/iangreyphotography/lenstests