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About 18 months ago I purchased my first DSLR, a Pentax K-50. I didn't know anything about Pentax and I wasn't aware of this site. I saw it on sale at Costco and did a quick search on it and the reviews I read all said about the same thing, "good beginner camera for pictures, no good for video and decades of K-mount lenses available" perfect for me.
Now my collection has grown. I have added a K-3 and K-1 and my LBA is still going. My K-50 came with the 18-55 and 50-200mm I have added two Sigma lens 150-500 and the 10-20. My Pentax lens now include F 35-80, FA 80-320, DFA 100 macro, DA 50 and the DA560 and I'm still looking to add to it.
Today they have discontinued the K-50, I still enjoy mine.