However, A7 test is not fair. First generation A7 is more than 8 years old. Current $2K camera is A7C and A7III, and A7III is one of the most color-accurate cameras out there.
You dont even need A7, A6000 is what a lot of pr0 twitch streamers use and its pretty much studio quality.
Most people are going to look at the comparison between the Opal and A7 and not see much of a difference, but the Opal is 7x cheaper.