Number of patches for profile?

[hugowolf]

Given a limited number of sheets with which to print patches, lets say four US Letter or A4 sheets, would it be better to use all four at once (approximately 2700 patches), or three for the first iteration and one for a set of optimization patches for a second reading? (i1 Pro 2 with iProfiler).

Brian A

[digitaldog]

No straight answer. Depends on how the first set was created and the patches used. Then the iteration target can be colors that are both like and very much unlike the originals for post optimization. Where did the patches come from (an image perhaps and if so, what color space).

[hugowolf]

No straight answer. Depends on how the first set was created and the patches used. Then the iteration target can be colors that are both like and very much unlike the originals for post optimization. Where did the patches come from (an image perhaps and if so, what color space).

I wasn't thinking of optimizing for a specific image, but having iProfiler generate the second set based on the profile built from the first set.

Brian A

[digitaldog]

I wasn't thinking of optimizing for a specific image, but having iProfiler generate the second set based on the profile built from the first set.

You can do both. The 2nd set could be a full or partial repeat of the original and/or more patches that fall outside the originals which could affect the profile.
Optimization seems to affect the Perceptual table more which makes sense. I've seen where post optimization smoothed out areas in a gradient so it can work.

[hugowolf]

You can do both. The 2nd set could be a full or partial repeat of the original and/or more patches that fall outside the originals which could affect the profile.
Optimization seems to affect the Perceptual table more which makes sense. I've seen where post optimization smoothed out areas in a gradient so it can work.

I am just wondering, if for example when doing profiles for cheaper papers, where for example I have used two sheets of US letter, whether one and one would give better results. Clearly it is more time consuming, since you have two overnight waits. I gues I could give it a try.

Yes, it makes sense that it would have more effect on the perceptual tables. (I wish X-rite would at least give some explanation of the those sliders for perceptual do.)

Brian A