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Old 30th April 2008
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Ian Ian is offline
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Re: Lens dilemma (Sigma 10-20mm V Oly 11-22mm) & (Sigma 70-200mm V Oly 50-200mm)

Originally Posted by Who's_E View Post
On the telephoto side, the Sigma is a beast compared with the Olympus version. Not sure what the weights are but there is a marked difference because the Sigma was designed for use on 35mm as opposed to 4/3 like the Olympus lens.

Amusingly I was using a Sigma 70-200 and my Dad an Oly 50-200 at a polo match in which the young princes were playing. I was approached by a steward "excuse me, sir, do you represent a press organisation" with the intention of putting me in the Pappo stand. Dad was left alone!
At least the steward had some good news for you for a change!

The Sigma 70-200 is bigger and heavier than the Oly 50-200 because it has a constant open aperture of f/2.8 through the range, it really doesn't have anything to do with which format the lens was designed for. The 50-200 drops two thirds of a stop to f/3.5 by the time you reach 200mm. I personally think this is a good compromise on the part of Olympus. If Olympus designed a 70-200 f/2.8 for the E-System, it would be of a similar size and weight to the sigma one.

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