Most (if not all) current Canon DSRL models and DSRL cameras in general are metal made, not plastic made. As I wrote previously, an extra effort and attention is required to keep the right batteries in working conditions under severe cold conditions, even for this case you can't be 100% sure if the batteries won't have a failure suddenly. According the 1974 Rollei factory manual and older manuals, Rollei cameras were lubricated and adjusted from factory with special low temperature grease and did not require special preparation for the Artic or the Antarctic. Carlos --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list