On 4 Jun 2002 at 23:06, Butch Black wrote: > Hi. > > Does anyone know if there is some reasonably simple formula to take a > regular meter reading (i.e. F4 @ 1/60) and convert it into lux? The Frontier > shouldn't be put in an area with more then 500 lux lighting, and where we are > putting it is pretty bright. If someone has a meter with lux and f-stops and can > give me a setting for 500 lux, that would work ok too.
Hi Butch, I'm can't lay my hands on a formula at the moment however I can provide you with a Luminance Table that is printed on my Mamiya Spotmeter the values are for measurements taken at ISO100 (K=14?): EV cd/m2 1 0.28 2 0.56 3 1.1 4 2.2 5 4.5 6 9.0 7 18 8 36 9 72 10 140 11 290 12 570 13 1100 14 2300 15 4600 16 9200 17 18000 18 37000 19 73000 20 150000 21 290000 22 590000 I'm not sure how accurate this table would be applied to another meter however its a starting point I guess, you'll have to find the conversion factor from cd/m2 to LUX of course. 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 .
