Re: continued solarplate notes
Loris, I never thanked you for this message.... I know that the worst sunburn I ever had was in MT. I forgot to put sunscreen on the tops of my legs and went for a 4 hr bikeride in shorts. Wow. Sun here is incredibly strong with the thin air, but I do not know when that begins. Our rule of thumb is sunburn outside skiing begins on Feb 1 but before that time if you aren't wearing sunscreen you're pretty OK. Here is a UV light meter: http://www.safesun.com/ Do you or anyone think this is an accurate device that could give relative indications of outdoor UV light for photographic purposes? Or is there a more accurate photographic one for outdoors use? Chris ----- Original Message ----- From: "Loris Medici" <mail@loris.medici.name> To: <alt-photo-process-l@usask.ca> Sent: Monday, April 09, 2007 3:54 AM Subject: RE: continued solarplate notes Hi Christina, It depends on time (UV level peaks between 11:00AM and 01:00PM), season / weather and how north and south you're located... Currently the UV index here in Istanbul is around 4.5 at max. -> it can go up to 11 in mid-summer (see http://www.enka.com/weather/ - this particular station is located 200 yards away of my house). I guess UV index doesn't go above 3-4 right now in Montana; this is pretty weak. A definite test can be made by using a light integrator. Regards, Loris. -----Original Message----- From: Christina Z. Anderson [mailto:zphoto@montana.net] Sent: Monday, April 09, 2007 5:44 AM To: alt-photo-process-l@usask.ca Subject: Re: continued solarplate notes ... Considering that Mike Ware says the sun is several times more powerful than UVBL (anyone know the exact comparison?) this is enough proof to me that there is a quite wide range of acceptable exposure and that the ratio is where it's at. ...
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