My answer is so disgusting I'd rather not reply. Besides, I don't have a DA
15mm f/4 Ltd lens.
Alan C
-----Original Message-----
From: Igor PDML-StR
Sent: Tuesday, June 30, 2015 1:23 AM
To: [email protected]
Subject: Photo puzzle
The idea for this puzzle came while I was working on some recent photos...
I think this puzzle is rather simple. (And there is some interesting
physics in it.)
What is this:
http://42graphy.org/misc/puzzle-2015-06-29/_IR26728-3.jpg ?
Engrave your answer on the outside of the barrel of DA 15mm f/4 Ltd lens,
and send it to me.
:-)
Igor
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