I am an infectious diseases physician and epidemiologist in Bethesda, Maryland, retired from the Navy and, now, fully retired from medicine. My wife and I are both into digital photography, photographing whatever interests us. You can reach me through my email email@example.com. If you'd like to purchase one of the photos, check out my pages at http://www.redbubble.com/people/thadz and http://500px.com/Thad_Zajdowicz.
Find me at: http://500px.com
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Q: Choosing a Pentax prime lens
A: Do you know?