[Leica] Digital Dark Room Advice

[John McMaster]

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
>>>>
>>>>