Apparently, this user prefers to keep an air of mystery about them.
19 Which lens serves best as the only lens on a cropped body for a beginner: the 40mm f2.8 or 50mm f1.8? Dec 17 '12
12 Why do mirror lenses have poor contrast? Apr 5 '12
12 Are meteors dim? Dec 14 '12
11 Panning Time-Lapse Oct 10 '12