Graeme Gill recently launched an app for Android that makes your display/profile colori- and spectrometers more mobile. So measuring Kelvin grades and spectral distribution of lamps becomes easier/affordable when a meter like that is already around.
Met vriendelijke groet, Ernst
Dinkla Grafische Techniek
Quad, piëzografie, giclée
www.pigment-print.com
Met vriendelijke groet, Ernst
Dinkla Grafische Techniek
Quad, piëzografie, giclée
www.pigment-print.com
On Wed, Oct 29, 2014 at 4:59 PM, 'mrjimbo2' mrjimbo2@... [DigitalBlackandWhiteThePrint] <DigitalBlackandWhiteThePrint@yahoogroups.com> wrote:
That is the optimal situation but in truth quite tuff to fulfill if your dealing with several different light sources frequently. I have helped set up viewing areas or lighting for years and the stuff I've seen is generally pretty scary.. Ironically most that talk about requiring a specific K value don't even own K meters.. We have two here. All lights change their K value over time and they change sooner then most might think..Most galleries don't change their bulbs until they burn out. Halogens that start out at 3200 or 3400 I've measured at 2400 some lower and their still using them.. What I'm trying to say is even with the best of intentions you can still blow it.. I have a totally great Gretag Macbeth viewing station mounted in the ceiling that can also be tipped to light a wall. It has 3 different sets of lights in it for viewing options.. If I don't change all the lights every 9 to 12 months it's useless for what it's purpose is.I like to master a print to 5000k that gets saved.. If I then need to adjust that up or down I do it.. Technically speaking we should be able to build an action that will take it there but different substrates that reflect differently screw that logic up..jimbo----- Original Message -----Sent: Wednesday, October 29, 2014 9:03 AMSubject: [Digital BW] Re: How to get neutral B & W prints
Regarding what sort of lighting to use when evaluating a print, it may be most desirable to make a print for the lighting that will exist at the print's final display location (as well as can be determined). If the print will be in a gallery using 3,200*K halogen lamps, with xx foot candles falling on the print, use similar lamps and brightness for your testing location. If the print will be hung in a home with low level, 2,700*K lighting, use that for the test. If the print will be hung outdoors...well, you get the idea.No virus found in this message.
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