Sony SAL28F28 - wide-angle lens - 28 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.

Time Manual) focusing either, which with HSM lenses 'is' available when shooting in One Shot AF mode. Whilst this might not at first seem to be much of an inconvenience, due to the extreme DOF (depth-of-field) available, one should consider that it 'does' in fact have a maximum aperture of f/2.8 and, even with such a short focal length, it is surprising just how 'little' DOF is available at maximum aperture, particularly when utilising the lens's excellent close focussing ability (15cm). It should be considered that this lens is designed primarily for use on FF (full-frame) digital SLRs' or 35mm SLR cameras, when the full dramatic effect of the 180° diagonal angle of view can be enjoyed. This is not the case when used on smaller APS-C sensor DSLR cameras where much of the effect is lost, due to the smaller sensor utilising only ...

davecham 29.12.2008 · Read full review
Ciao members have rated this review on average: very helpful
Review of Canon EF fisheye lens - 15 mm F/2.8

Sigma EX macro lens - 105 mm F/2.8

Advantages: value for money (compared to pro level), build quality,
Disadvantages: makes you think your a pro, but by its nature, proves you otherwise.

quality macro lens. It's a bit slow on auto focus, but if you shooting macro the chances are that the subject is pretty still. I use mine most days. Tech Spec: Focal length - 105mm Weight - about 500g Magnification - 1:1 f-stop range - 2.8-32 Filter size 58mm Mounts: SIGMA, CANON, NIKON, SONY, PENTAX Final point: Read about macro photography before buying a lens like this. The technique is NOT the same as 'point and shoot'. ...

stevieray 03.10.2008 · Read full review
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Review of Sigma EX macro lens - 105 mm F/2.8

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.

removed whenever you choose to use the lens hand-held. Being an EX DG lens, it is suitable for use on either FF (Full-Frame) or APS-C cropped sensor cameras when it effectively behaves like a 105-300mm f/2.8 (on Nikon APS-C), 112-320mm f/2.8 (on Canon APS-C) or 119-340mm f/2.8 on Sigma DSLR cameras. These make interesting options on the APS-C size sensor cameras and it can be assumed the camera has a completely different set of values when used with such cameras to those when used on full-frame. Interesting? The fast f/2.8 maximum aperture provides great fun for shallow DOF (depth-of-field) shots where particularly at the 200mm end of the zoom, depth-of-field is excitingly shallow. Whilst the lens is referred to as 'macro' within it's descriptive title, the term is used somewhat loosely. True macro lenses provide genuine 1 to 1 life ...

davecham 28.12.2008 · Read full review
Ciao members have rated this review on average: very helpful
Review of Sigma EX telephoto zoom lens - 70 mm - 200 mm F/2.8