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 firstname.lastname@example.org. 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
19 Apr 2015 — 10 views, 3 favorites
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16 Apr 2015 — 26 views, 2 favorites
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Q: What is the difference between macro lense and macro extension tube
A: Do you know?