Yani S wrote:
Its called LSD

Yup, it does that, (from a long time ago, in my experience).
-Don

Shadow Dancer wrote:
I used to run large format ink jet printers. Our office manager brought in a black and white photo that her son had taken and wanted me to make a poster of it.

I showed her test strips and took her advice on getting the neutral gray that she preferred. When we were really close, I printed two tests, one that I thought would be the final and one with 1 point of magenta added in Photoshop (out of 256 point scale). I showed it to a few other employees, male and female, before I took it to her. Nobody could see a difference.

I dropped it on her desk and she instantly pointed at the +1 magenta strip and said "That one is pink!".

I started using her for important color decisions after that.

If nobody could notice the difference. Then did it really matter?

Yani S wrote:

If nobody could notice the difference. Then did it really matter?

Only when it's the client

Yani S wrote:

If nobody could notice the difference. Then did it really matter?

In general, no it didn't matter. For me, even less so - I have some measurable colorblindness. On the other hand, finding somebody in the shop who had exceptional color vision made my job much easier.

I did have a client who brought in files that were shot at great expense by a professional. They were creating trade show displays and had images of product in several different colors. Their Art Director was female with excellent color vision, I don't know if she was at the same level as our Office Manager but she wanted the trade show displays to match with the actual product. After the first test strips were viewed, we negotiated to pickup actual samples of the products in the colors we needed to match.

It was really helpful having the Office Manager provide guidance that I could trust absolutely to get that job done quickly.