Sigma 55-200mm f/4.0-5.6 DC for Olympus

Pros: Compact, lightweight, very inexpensive, mechanical focusing ring

Cons: Slow lens, soft images at telephoto unless stopped down significantly

The Bottom Line: This lens will hold you over until you can buy the Olympus 50-200mm. If you shoot at wide apertures, you're better off with the 40-150mm and cropping your shot.

Review: When I purchased my first digital SLR, I bought into the Olympus E-system because of the advantages I felt it had over the competition, one of which was really great optical performance from the Zuiko digital lenses. And anyone would be hard-pressed to ...

Pros: Really cheap, good build quality

Cons: Uses mechanical clutch, other inconsistencies compared to Olympus 4/3 lenses.

The Bottom Line: This should be the de facto choice for a 4/3 zoom lens. You probably won't need anything "better" and the few quirks are nothing you can't live with

Review: This lens was released along with a few other lenses for the Four Thirds system by Sigma. I never cared what the other two were so you will have to look it up yourself. I somehow managed to find one of these on ebay - it was the only one and I won the ...