Archived posting to the Leica Users Group, 2014/08/20
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Lux is a measurement of area light so I think only incident meters read it, don't remember by spotmeter having that... john ________________________________________ From: Bob Adler [rgacpa at gmail.com] A what meter? ;-) Thanks John. I'll have to see if my ole Pentax spot will do that. Sent from my iPad > On Aug 20, 2014, at 6:42 PM, John McMaster <john at mcmaster.co.nz> wrote: > > 4 lux is EV 0.5 @100asa > http://www.intl-lighttech.com/support/calculators/exposure-value-to-lux-converter > > john > ________________________________________ > > > My incident lightmeter can read lux, I think 4 is rather dark and ~50 is > standard living room..... > > john > ________________________________________ > From: Bob Adler [rgacpa at gmail.com] > > Can you tell me more about 4 lux? How to measure lux? I can put in a > dimmer for critical times during the workflow... > Thank you again Mrs. Wizard! > > Sent from my iPad > >> On Aug 20, 2014, at 6:05 PM, Tina Manley <tmanley at gmail.com> wrote: >> >> Bob - >> >> Yes, that all seems right. >> >> http://www.rpimaging.com/store/manufacturers/gti/munsell-neutral-gray-paint.html >> >> ;-) >> >> Tina >> >> >>> On Wed, Aug 20, 2014 at 8:46 PM, Bob Adler <rgacpa at gmail.com> wrote: >>> >>> Thanks Tina. Seems that the PDF is recommending: >>> Black wall behind you as you sit at the computer. >>> Flat Titanium dioxide white on the ceiling with diffuse light pointing up >>> to the ceiling as the primary light source. >>> Munsell 8 grey (whatever the heck that is) for all the walls, flat paint. >>> Wear a ninja suit. >>> Low (4 lux) light. How do you measure that?? >>> Blackout curtains... >>> >>> Does that seem a correct interpretation? Any idea where to get a source >>> for Munsell 8 to match the paint to? Isn't 4 Lux almost candle light >>> dark? >>> >>> Thanks for the article and help! >>> >>> Does that seem correct? >>> >>> Sent from my iPad >>> >>>> On Aug 20, 2014, at 3:26 PM, Tina Manley <tmanley at gmail.com> wrote: >>>> >>>> Adobe has a pdf on the environment for the digital darkroom: >>>> >>>> http://www.adobe.com/digitalimag/pdfs/calibrating_digital_darkroom.pdf >>>> >>>> He advises gray for the walls but a Munsell 8 gray >>>> >>>> >>>>> On Wed, Aug 20, 2014 at 4:55 PM, Bob Adler <rgacpa at gmail.com> wrote: >>>>> >>>>> I am setting up one of the bedrooms in our home as my digital "dark" >>> room. >>>>> It will house my printer, primary Lightroom/Photoshop computer, photo >>>>> paper, laminator, etc. I won't be doing any spraying, so a ventilated >>> area >>>>> isn't required. >>>>> >>>>> My primary question is what color to paint the room? I am thinking flat >>>>> digital white (white white) with all bulbs being 5200k fluorescents. I >>> have >>>>> some direct lights already that are measured 5200k and will be used to >>>>> analyze prints. >>>>> >>>>> Any suggestions on what color to paint the room or other advise would >>>>> be >>>>> appreciated. One of my concerns is keeping dust out, but that's >>>>> probably >>>>> cost prohibitive. >>>>> >>>>> Thanks in advance for your input, >>>>> Bob >