優點:
- large aperture standard zoom, useful range
- weather resistant
- quite sharp when stopped down
- color saturation is good
- good build quality
缺點:
- SDM not reliable and not fast
- not sharp enough when not stopped down
評價:
Would recommend this lens to Pentax Chings, as there's not other lens that can do the same with it, large aperture, standard zoom range, weather resistant, these are already worth the money. For my personal experience, this lens saved me a few times in raining shooting situation, which has proved it weather resistant very well. There are times that I shoot on the beach and got wet with sea water, and it can be cleaned by shower without any problem. The main complaint with it would be the SDM, sometime it just not very reliable, and quite slow and need hunting.