Photographing ice crystals on glass
This detail of ice crystals on a window pane was actually about 7.2 mm wide. The outside temperature was just above freezing, so the sharpest edges melted off. Because we’re shooting such a small area, there are lots of opportunities for unique compositions.
Camera: Canon EOS 5D MkII
Lens: MP-E65mm f/2.8 1-5x Macro
Exposure: 1 sec at f /8
Lighting: flash diagonally from behind
Below is a link with beautiful pictures of snowflakes and ice crystals, and everything about the technology behind photographing them.