Instruction: Answer the given question using the supporting document.

Input:
Question: Is this compatabile with pentax ist-D?
Document: This lens fit my Pentax K20 D digital camera perfectly. Pictures turn out sharp and look great. Very satisfied with this product.
Getting outstanding images from this lens. I would recommend this to anyone who is looking for a zoom to fit on a Pentax DSLR.
Works well. As I am not allowed to be succinct, it works quite well with the Pentax K100D Super. It will be a valuable addition to my collection.
The items did not seem to be wrapped as a new Pentax lens would be. Focussing seems to be a bit off though I have not run it through a test. Maybe that this is just a cheap lens and therefore inferior.
For the price, this lens produces decent images with smooth bokeh and a fair amount of sharpness. However, I would not recommend it for low-light or high-speed situations. I prefer using it during the day with manual focus.I am not a professional photographer. At the moment, all I own is a Pentax K-x, the 18-55mm kit lens and this 50-200mm telephoto, and a flimsy tripod. For what it's worth, this lens is great for what I do.
This lens gave me the ability to improve my sport shots that I take for my local teams. This adds a new range in my photography and the clarity is fabulous.
This is not professional-grade equipment, but it's definitely enough for those who just want to go out and have fun.
Santa brought this to me for Christmas. (OK, I confess, I ordered it, and gave it to Santa to wrap. Sort of the same, right?) I've had fun playing with it, taking snowscape pictures, and close up pictures of trees and birds from a long way away.I did try it in the family room, while we were all unwrapping presents, and at its widest setting, 55mm, this lens takes a very close picture of a person 20 feet away.
Not only fast delivery but a great zoom lens for my digital K2000!My pictures are now much better! Great price for great lens.
I've taken a few photos with this lens and it does an excellent job on detail. I would certainly recommend this lens to anyone.
Answer: Yes