From: "Dave Valvo" <dvalvo@xxxxxxxxxxxxxxxx> Subject: [pure-silver] Re: Filters, was safelights Date: Thu, 13 Jan 2005 22:07:02 -0800 > How often to change? Best test your system every 5 years. > Generally when you work with certain products day after day you know > what you can do with them. If something changes or you can't get > the contrast you used to get..... test your system. I agree contrast filters to put between or below condensers don't fade fast. Mine is 10 years old but there's no problem. If someone is very paranoid, I suppose two sets of filters could be purchased and save one to occasionally compare against. -- Ryuji Suzuki "Keep a good head and always carry a light camera." ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.