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If I were you, I'd keep the Tokina and the 50mm 1.8 for sure, just because they're both too good to give up. The 18-200 is a good all around lens, but it doesn't do all that well at wide angle (noticeable distortion). If I were you, I wouldn't worry about having to change lenses either; do it while the camera is turned off, and in a clean environment (like, don't change lense while pointing the camera into the wind). Blow dust off the sensor regularly and keep camera/lenses clean all around, the sensor really doesn't get that dirty if you're careful. |
