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Sunday, April 1, 2007

Sigma Macro 70mm f/2.8 EX DG

A versatile lens with a fast aperture and popular focal length for D-SLRs


Sigma Macro 70mm f/2.8 EX DGWhen we all shot film, one of the favorite focal lengths for a macro lens was 105mm. Sigma’s new 70mm ƒ/2.8 macro lens fits that tradition for digital cameras. All photographers using digital SLRs with small-format, APS-C-sized sensors will find that this lens acts like a 105mm lens with a 35mm camera because of the crop or multiply factor.

I love this size of macro lens. The focal length is long enough to allow some distance between lens and subject—that gives you more of a chance to not spook wary subjects, such as many insects. Another important aspect of focal length and distance-to-subject is light; with short focal lengths, you end up so close to the subject that you can block the light on it. Plus, it can make it difficult to use flash. 

fujifilm finepix s9100fujifilm finepix s9100

I also liked the ƒ/2.8 maximum aperture of the lens. This offers more depth-of-field control, plus it helps with photographing people. I also shoot portraits (for which this lens has an ideal focal length) and low-light people photography, and an ƒ/2.8 lens is a huge advantage over most zoom lenses of this range. Even if you do get a zoom that covers this focal length with that ƒ-stop, this lens is a fraction of the size and weight. That makes it a versatile lens.




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