Real owners rate these about evenly: 76% of 132 Sony a6700 owners recommend it, vs 71% of 42 for the Viltrox 27mm F1.2 Pro.
Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score
“They make my A6700 and ZV-E1 record forever”— @jntechreview on YouTube
“I've been shooting with sony in desert and glaciers for over 10yrs never had any heating issues”— @EstebanAi on YouTube
“That fan buys me an extra 30min with the a6700 if lucky, and the fan fully charged. Nowhere near the fx line”— @elaroussinoureddine9801 on YouTube
“The Viltrox 27mmf1.2 is around that focal length and is quite great.”— ninjagowoo on Reddit
“Viltrox 27mmf1.2 pro. sharpness on par with the new xf23mmf1.4. The only downside is the size and weight(600g), it weighs more than XT5. It is cheaper than original modern primes but offers same quality.”— MYFAILEDMID on Reddit
“I felt 27 (40 equivalent) was not wide enough for indoor/easily framing multiple people, making 23 more versatile + the lens would be much heavier and I knew I would never use it because of that.”— Fino831 on Reddit