This bench is right by the sea. Early morning, sun shining, and a cup of coffee right beside me, this is where I’ll sit many summer mornings. Today, alas, it was a bit cold, and the sun was already setting.    

Telephoto  lenses (like my 300 f/2.8 IS) and cold weather doesn’t always cope well. Often the lens has to cool down to the same temperature as the ambient temperature (or close to) before focusing correctly. This day was no different. At -22 C I had to micro adjust AF to +10 the first hour to get sharp pictures. After 1.5 hours I could dial it down to zero. Needless to say that I nearly froze my fingers of holding the lens and...