U of S | Mailing List Archive | alt-photo-process-l | Re: continued solarplate notes

Re: continued solarplate notes

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?

----- 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.


-----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
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.