[Alexey_Nigin]

I tried viewing the article on 4 different monitors. All monitors had default settings except for brightness. Monitors A & B were on new laptops, monitor C was on a very old laptop, and monitor D was on a smartphone. Here are the results:

FIGURES 1 & 2. On monitor A, all bands of color in figure 1 were easily discernible. The first four bands of color in figure 2 looked identically. Figure 1 looked more evenly spaced than figure 2. On monitor B, all bands of color in figure 1 were easily discernible. The first five bands of color in figure 2 looked identically. Figure 1 looked more evenly spaced than figure 2. On monitor C, all bands of color except the last two in figure 1 were easily discernible. The first three bands of color in figure 2 looked identically. Figure 1 looked about as evenly spaced as figure 2. The result from monitor D was the same as the result from monitor A.

FIGURE 12. On monitors A and B, the color of (A) was closer to (B) than to (C). On monitor C, (A) appeared equally close in color to (B) and (C). On monitor D, the color of (A) was exactly identical to (B).

CONCLUSION: On monitor C, gamma correction had neutral effect. On all other monitors, the effects were negative. Unfortunately, I was unable to find a standalone PC monitor for my comparison. It is entirely possible that a PC monitor would give a different result. However, since most people use laptops and tablets nowadays, I doubt the article's premise that "every coder should know about gamma".

[odbol_]

It's kind of silly how he says "everyone needs to know about this; it's so important" and then the first example he preceded by saying that mobile phone screens basically can't tell the difference and don't matter.

[johnnovak]

Looks like you missed all the other artifacts I gave examples for, which are all calibration independent (colour blending, compositing, rendering etc.)