1. Excellent picture quality
2. Very sharp image at all zoom range
3. Excellent workmanship, very quality built
4. Two stablizer modes (I and II) is useful, the sacrifice of very little sharpness at mode II is not an issue at all
5. Rapid focus
6. Lock on the lens hood gives security and is handy to unlock
7. Open up a lot of discussions with other photographers when using this lens
















