Hi Lori
I’ll get Chris to come back to you with answers when he’s next in the office. But in brief, yes he uses a calibration tool to calibrate our desktop monitors in the office as well as his laptop – he does this fairly regularly throughout the year. In extreme cold such as Alaska he uses a number of different types of gloves depending on the conditions and how cold it is, usually with slits cut in them so he can remove his trigger finger. Then he wears mittens over the gloves (with a zip across the top of the hand), so when he’s finished shooting he can put his finger back inside his glove, then his gloved hand back inside the mitten. He uses hand warmers inside the mittens. Preparation is always so important, for exactly these reasons. No point being on a photo shoot and getting frost bite in your fingers half way through. So its just a matter of thinking ahead and preparing for the likely conditions you will face. I know it can get really cold in Colorado – especially the backcountry. Good luck and happy shooting!