Luminous Landscape Forum

Raw & Post Processing, Printing => Colour Management => Topic started by: ThDo on August 19, 2012, 03:35:27 am

Title: Beginner Questions to i1 Profiler with i1 Pro 2
Post by: ThDo on August 19, 2012, 03:35:27 am

I just got my i1 Pro 2 and I have some basic questions.

1. After measuring the patch set you have to choose under which condition M0, M1 or M2.
Why and how does it effect the outcome?
Before measuring the patch set you have already selected how you want to measure it.

2. Lighting step
What to choose here if you dan't know under which lighting condition the print will be viewed.

3. OBC workflow
In one step you have to compare the print with gray cards.
Where do you get them or should they have been included with the i1 Pro 2?

Thanks for any enlightenment.

Title: Re: Beginner Questions to i1 Profiler with i1 Pro 2
Post by: Czornyj on August 19, 2012, 06:48:32 am

1. M-conditions mimic the behavior of OBA content in measured paper and colorant. Various light sources contain various UV levels, that stimulates the OBA and fluorescent colorants. M0 corresponds to a tungsten light source, that emits certain amount of UV, M1 corresponds to a hipothetical daylight (D50) that emits even more UV, and M2 corresponds to a light source with no UV emition.
http://www.xrite.com/documents/literature/en/L7-510_M_Factor_en.pdf

2. The most common choice is D50

3. Use ColorChecker Proof, put it into the OBC Mask, use neutral patches for evaluation:
(http://www.dtgweb.com/shop/files/icons/t_36245.jpg)

Title: Re: Beginner Questions to i1 Profiler with i1 Pro 2
Post by: digitaldog on August 19, 2012, 12:59:23 pm

1. Read this: http://www.luminous-landscape.com/reviews/accessories/eye_one_pro_ii.shtml
You’ll get an idea about what M standard is trying to do. If you are unsure, measure using M1+M2, build a profile both ways, see what you prefer under the illuminant you’ll view the prints which has an effect.

2. Pick D50 UNLESS you are aiming for a specific illuminate (say you are printing a gallery show). Take the i1Pro-2 there, take a reading, build the profile with that exact reading.

3. IF you have a boat load of OAB’s, you’ll run this process and visually view the target under the illuminant and dial in a number that will affect the iteration of the original profile or data. The gray’s are on the Macbeth Holy checker you should have received with the package.