It's relatively big snowflake, 5-7 mm. 9 serial shots averaged to boost signal-to-noise ratio. Background: dark woolen fabric, natural light (gray clouded sky), external optics Helios 44M-5, january 2013, Moscow.
Never in my life have I seen anything so beautiful..Mother Nature never ceases to amaze me..and this shot! I am envious! All my attempts have failed! Beautiful!