Archived posting to the Leica Users Group, 2001/03/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Dan... It depends. With your usage, it may not make a difference. In a professional AV house like where I have worked in the dim distant past, we would create AV multi-image presentations with dupes because we wanted to preserve the originals as much as possible. I have seen slides melt in high powered [1000 watt or higher] projectors after being lit for 30+ minutes non-stop in regular mounts, but not in glass mounts. However, I have seen glass mounted slides fade significantly in the same conditions. It varies. Just be aware that it can happen and figure accordingly. /Mitch - -----Original Message----- From: Dan Honemann [mailto:danh@selectsa.com] Sent: Friday, March 30, 2001 8:26 AM To: leica-users@mejac.palo-alto.ca.us Subject: [Leica] projecting vs. protecting slides Someone in photo class last night said that slides will degrade over time if you project them (due to heat); he only projects dupes. Is there any validity to this claim? I only have originals and project them occasionally (once a month or so), but my oldest slides are still less than a year old. Should I incur the costs of duping these slides to protect them? What do you do? Dan