<p>Hi Hening,<br>
Yours first and only question was if 1DS would give you 8x11 prints. I never owned original 1D neither 1DS; however Jamie has answered the question in the post. I, personally, was skeptical about digital when the cameras started to show up and my first one was Canon S80 point-n-shoot sporting 8MP small sensor. From that one I was getting beautiful 8x10 and 8x12 prints. I'm sure 1DS will beat S80 hands down in this or any other area.<br>
On the other note I have been shooting in Arctic a lot. In February-March 2011 while being a part of the Polar Ring Expedition on our first attempt to cross Arctic from Russia (Archipelago Severnaya Zemlya) via North Pole to Canada (Resolute Bay) I brought the original 5D and 1D MarkIII. The temperature range was from -37C to -48C and both cameras worked great. However, a non-OEM battery pack for 1D Mark III that I bought off e-Bay died after sitting in the Pelican case in cold temperature for 3-4 days not taking charge any more. On the other hand non-OEM batteries for 5D (cheap) had no problem to hold the charge like the original Canon batteries.<br>
The second attempt to cross Arctic we took in 2014 (February-March) starting from continental part of Russia in Siberia (Novy Urengoj). This time I brought 5D MkII and 1DX. The temperature was below -35C and quite few days it was steady at -52C. Both cameras worked great, the lenses (16-35, 24-70 and 100-400) had no any issues whatsoever.<br>
I always had spare batteries in my internal pockets. Bringing cameras back into the warm (5C - 10C) vehicle environment was not a problem - I put the cameras back in the bag, zipped it and kept it zipped in the vehicle for an hour or two.<br>
Happy shooting, Hening.</p>