The 58mm lens tested here is a late 1980’s Helios 44-2 made in the KMZ factory outside Moscow. The KMZ factory was the beneficiary of all the captured german optical technology during WWII. As a result, many of the lenses they produced were based on Zeiss designs. The lenses have a beautiful feel to them, solid construction, and resolve very well on a 2.5k sensor.
From a color perspective, these lenses have a pretty neutral shift. You can see from the above chart, that they are off by only a few percent on the majority of the chart. While only 4 colors are off by 10%, the skin tone (top row, 2nd from the left) is one of them.
Now, from a practical perspective, what does this mean? Simply that this lens doesn’t have a color shift of any real value to correct out in post. The green and magenta cancel each other out. We were just as surprised as you are, I’m sure, that an old, communist manufactured lens would be this close to neutral.