This Pentax-DA 16-45mm F4 is a great lens and is in fabulous condition with no damage, dust or fungus. I purchased it new so know the lenses complete history. It is very versatile and allows for some great wide angle. This is definitely a step up from the kit lenses.
For unbiased reviews check out:
http://www.pentaxforums.com/lensreviews/SMC-Pentax-DA-16-45mm-F4-Lens.html
Please contact me if you have any other questions. This ad will be deleted once sold.