On 20 Jun 2002 at 9:12, William Robb wrote: > There are to many variables to make such an absolute statement. > First, is the spotmeter calibrated to 18% or 14%? I don't know, > do you? What colour is the light being read? The question > doesn't specify, beyond saying it is natural. Natural what? > Daylight, one would presume, but is it measuring open sky > illumination or something else? Will both meters react to the > colour of light the same way? I don't know. Do you? > In an ideal situation, using two colour blind meters that have > been calibrated to the same standard, the readings would be the > same. In the situation as put forward in the question, you > cannot presume anything, and therefore cannot give an > affirmative answer.
Rather than blindly speculate I just measured the centre area of my fluorescent light table (resting on the table surface or filter) using three meters in incident mode: Gossen Luna-Pro Digital F f5.6 8/10 @ 1/125th Gossen Lunalite SBC f5.6 1/3 @ 1/125th Minolta Spotmeter F f5.6 5/10 @ 1/125th Then through a green X1 filter (ff 4 or 2 stops) Gossen Luna-Pro Digital F f4.0 0/10 @ 1/125th Gossen Lunalite SBC f2.8 2/3 @ 1/125th Minolta Spotmeter F f2.8 6/10 @ 1/125th Then through a red 25A filter (ff 8 or 3 stops) Gossen Luna-Pro Digital F f2.8 9/10 @ 1/125th Gossen Lunalite SBC f2.8 2/3 @ 1/125th Minolta Spotmeter F f2.8 4/10 @ 1/125th None of my meters are modified in any way, draw your own conclusions. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications.html - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
