Sigma EX 150mm f/2.8 DG HSM APO Macro

Advantages: Optical quality. Build quality. Price.
Disadvantages: Could come free with Cornflakes?

...100/f2.8. In any case, if like me, you want to shoot macro on a FF (full frame) DSLR, the 150mm focal length is eminently more versatile. The Canon lens, doesn't come with a rotating tripod collar either. Indeed, this is an 'optional extra' which is extremely expensive. Such a device 'is' included with the Sigma. Also included, is a decent lens hood (also not included with the Canon lens...

davecham 28.12.2008 20:59 · Read review
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Review of Sigma EX macro lens - 150 mm

Sigma EX DG 70-200mm f2.8 HSM Macro

Advantages: Build quality. Finish. Range. Fast maximum aperture.
Disadvantages: Image quality not as good as expected. Chromatic Aberration.

...a little more 'honest' in their description of their product's specifications? This lens has a large maximum aperture of f/2.8 which remains consistent throughout the zoom range and is fully compatible with the Sigma EX 1.4x or 2x APO Tele Converters, both of which maintain full AF (auto focus) facilities. The lens features Sigma's HSM (Hypersonic Motor) AF and is fast, accurate and very quiet...

davecham 28.12.2008 22:59 · Read review
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Review of Sigma EX telephoto zoom lens - 70 mm - 200 mm F/2.8

Sigma EX 15mm f2.8 Fisheye - A 'Barrel' of Fun!

Advantages: Good performance. Great fun. Good value.
Disadvantages: Limited uses. Canon owners should consider Canon's version.

...I purchased this lens brand new in preference to the Canon EF 15mm f/2.8 fisheye, primarily because I thought it might be a better lens than the now aging Canon version. The Canon lens has not been updated in many years, having been designed originally for 35mm Canon EOS cameras. The Sigma on the other hand, is a more up-to-date design, benefiting from more recent developments in both lens design...

davecham 29.12.2008 17:11 (29.12.2008 17:13) · Read review
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Review of Sigma EX fisheye lens - 15 mm F/2.8