On 11/11/03, [EMAIL PROTECTED] disgorged: >The UV that passes clear glass (and gets through camera lenses) is rather >long wave -- just the other side of visible. Short-wave UV is stopped by >most glass. To pass short wave UV, optics made of quartz are needed. When we >talk about UV in photography we really mean violet light. My guess is that >light of wavelength below than 240 nm would be stopped by ordinary glass. >Anything below 200 nm is shortwave UV. These are arbitrary boundaries and >someone is sure to disagree. And there are bound to be big differences >between lenses. We have an expert in the group perhaps he'll tell us?
*and you're not* ?? <thud> Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=====| www.macads.co.uk/snaps _____________________________ Free UK Mac Ads www.macads.co.uk
