7 out of 10 points and recommendedweather resistance, image colour, light weight, good resolutionnot the absolute zenith of optical performance
Came with my K-7. Had to return the first 2 examples of this lens, first due to optical probs and second to both optical and mechanical probs.reviewed January 22nd, 2010
Third one was a keeper. Very good sharpness in the center of the image when stopped down to f8, good rez at the edges. Some chromatic aberration and vignetting. Colour is great, contrast ditto.
Love being able to take photos outside when it's pouring rain or snowing.
i usually have the camera on a tripod when i'm using this lens, but the K-7 balances quite well in the hand when it's mounted.