BTW, since the 16-45 does not come with a Pentax lens case, I did find one that works well. It's the
Op/Tech Lens/Filter Pouch. (<That's the Op/Tech link. You can buy it at B&H, Amazon, etc...) I got the small size, and it works fine, even with the hood attached to the lens. The bag doesn't completely close at the top when the drawstring pulled tight, but it comes with a flap, so there is no open space. (I.e., the lens is completely protected.) Nicely padded, and I like that it an included but separately-zipped filter space at the bottom of the bag. (Filter cases usually are so big otherwise...) Comes w/ a clip and a belt loop. I think it's the smallest case you can get and still feel that the lens/hood/filter are all nicely protected.