This is not really related to your posting, however, historically I would like to share with you this short story/photo.. Back in the old days, 1970's, as a ski photographer, weight was a factor for sure, but you had little choice back then. My hardware was a Nikon F2, without motor, hand held, BW film and in this case perhaps a 135mm or 180mm. The film, asa 400, I processed myself and shooting snow was technically always a challenge, metering wise. And at 10,500 feet above sea level, Loveland Ski Area, Georgetown, Co, it was always cold, finger tips without feeling, and always dealing with condensation. At the time, I used a LowePro waist pack. Although this is not my "finest" ski photo, it still shows a perfect ski shot----This is my good friend Claude Perrot, from Courchevel, Fr. on the US Bob Beattie, Pro Tour. In 1982, as the Team Photographer for the USA Handicap Ski Team at the World Championships For The Disabled in Leysin, Swiss, I had graduated up to an F3 with motor--my waist pack got even a little heaver.
If I wanted to do ski photo right now, I would take along my GH3-14-45 lens---it would be a "feather" in my pack/bag.
Raymond A. Bleesz
former Loveland Ski Area Photographer, 1970-'90
Former USA Ski Team Photographer, 1982
Edwards, Co---in the Vail Valley