Hi there! I own a 5D Mark II and enjoy the high Iso performance. I take pictures often at dawn or dusk but the temperatures are really low at this time of the year and I am a bit affraid for the electronics of this camera. sometimes, the menu display is not showing and goes back to camera mode for some reasons, and I don't know if it is related to temperature... Do you know if there are some recomandations to use cameras like this one in very low temperatures ? do I have to keep it out of the bag for a reasonable time, do I have to use warm fabrics to keep it safe? thanks to let me know!