This is the oldest and the cheapest lens that I have. My wife bought me this glass as a gift fifteen year ago for about $300. At that time it was very expensive for us.
I almost never used it. Oddly, I thought that having such expensive zoom I should stay with Pentax brand. This is the classic example how wrong reasons lead to great decisions.
Now, when I do candid street photography, this lens has the second life. I even bought rubber hood for it. It is fun to take quick snapshots using pull-push for zoom and manual focus. With some practice you can operate it pretty fast. Image quality is good enough.
Pentax’s in-body image stabilization technology works great with this stuff too. Usually, I configured it for 200mm. When I am in the mood for long range hunting I have fun with Promaster 60-300.