Tanner Yates, who uses a K200D and K-7, is the featured macrophotographer in a Q&A recently posted by professional macrophotographer Mike Moats at
mikemoatsblog.com
Look in the left column. (You might have to scroll down a bit, depending on how many days have passed.) Some of Mr. Yates' spider and insect photos are posted. Mr. Moats writes that people who think they need brands like Canon and Nikon to get good images will be surprised to see what Mr. Yates shoots with.
(Also, readers of various ages please note: The superb work is by a photographer who, Mr. Moats writes, is 17 years old.)