This day i see many good, but very small snow crystals, 1-2 mm. They don't melt, and i shoot them in short series. This picture was made from 8 serial shots, aligned and averaged to boost signal-to-noise ratio. Glass background with backlight, additional lens Helios 44M-5, december 2012, Moscow.
More snowflakes in set snowflakes and snow crystals
Also i wrote small article about my shooting technique