An adirondack hiker?
Marcy is a long walk, but not that tough. I've never done it in summer though, so I have no idea how boulder filled it is. I avoid the high peaks like a case of herpes 9 months out of the year.
I recommend a Samsung TL500 or Panasonic LX5 for high quality shots without the SLR. Though I still find the slr much quicker to use, much more intuitive, the TL500 is my light and fast adventure camera when an SLR cannot come. Though I believe an image is sold when the check arrives, there should be an image from the TL500 in the 2012 Adirondack Life calendar. I'm very impressed with the file output, especially RAW!
As far as the fog, you can get plenty of great shots. 99% of people put the camera away in the clouds and rain, which I think is a bit foolish. Turbulent weather offers the most unique opportunities for creative shots.
Originally posted by reeftool I hiked Mt. Marcy with my daughter last summer on a day trip. The round trip was appox 15 miles, mostly over boulders and loose rock. To be honest, the DSLR became a burden by the end of the day. Clouds moved in and much of the day was spent in dense fog along the higher terrain and I took few pictures. A good quality P&S is on my list for longer hikes and climbs.