UVIndeSir

WetMogwai

Member
Joined
Oct 29, 2009
Messages
152
Format
Multi Format
I just found this IndieGogo campaign. I thought it might be of interest to alternative process photographers. It lets your smartphone tell you the UV index right where you are. This seems like it would be useful in determining exposure times for sun printing. I funded it and I hope you do too because it isn't yet to their goal. Considering I recently had problems with outdoor exposures due to a low UV index, I think this would be a really useful tool, so I really hope this gets funded and made.

Dead Link Removed
 

MattKing

Moderator
Moderator
Joined
Apr 24, 2005
Messages
53,168
Location
Delta, BC Canada
Format
Medium Format

Does anyone know whether the UV light measured by this is the UV light photographers are interested in?
 

Hexavalent

Member
Joined
Nov 19, 2009
Messages
592
Location
Ottawa, Onta
Format
Multi Format
AFAIK, UV index is biased towards UVB/UVC - those wavelength which is more likely to cause sunburn. Alt-process is sensitive in the UVA range (~365 nm)
 

MattKing

Moderator
Moderator
Joined
Apr 24, 2005
Messages
53,168
Location
Delta, BC Canada
Format
Medium Format
Hexavalent said:
AFAIK, UV index is biased towards UVB/UVC - those wavelength which is more likely to cause sunburn. Alt-process is sensitive in the UVA range (~365 nm)
Click to expand...

Interesting, because the information on the Kickstarter page seems to reference UVA.

It also indicates (way down near the bottom):

  • Peak sunlight response bandwidth: 290 - 298 nm
  • Totalsolar response: 290 - 400 nm
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…