Originally posted by yeatzee Im curious to hear more about this
Size/weight - It's a rear lens cap shorter than my 400mm f5.6, 77mm filter, 1020 grams. It doesn't set records, in fact pretty close to the DA* 300/4, but you'll know it's there. Not a casual travel lens.
MFD - Only focuses to 13 feet.
Compatibility - like any other K, but with the size/weight to make pressing the green button more challenging.
Optically, look to others to pick it apart. I think it's great. At this price level, the competition is a handful of consumer zooms, many of which are not that great past 200mm and none of which go to f4.