Real owners rate these about evenly: 88% of 97 Canon EOS R6 Mark II owners recommend it, vs 92% of 36 for the Sigma 18-50mm F2.8 DC DN.
Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score
“Had this camera for a year. It’s at the feature point where 99% of photographers will not need more than this”— @andrewwelchphotographer on YouTube
“I have this camera. Been using it professionally for a year! It's a beast!”— @PaulStrople on YouTube
“Lack of third-party lens support is an instant dealbreaker for me.”— @steviewonderisnotblind5833 on YouTube
Real owners rate these about evenly: 88% of 97 Canon EOS R6 Mark II owners recommend it, vs 92% of 36 for the Sigma 18-50mm F2.8 DC DN.
Owners point the Canon EOS R6 Mark II at hybrid shooters wanting strong photo and video, and sports and action shooters needing high keeper rates.
Owners point the Sigma 18-50mm F2.8 DC DN at aPS-C shooters wanting one compact everyday walk-around lens, and travelers prioritizing small size and light weight.
The most-cited downside of the Canon EOS R6 Mark II is video stabilization issues: IBIS "jello," and you can't disable IBIS while keeping lens IS. For the Sigma 18-50mm F2.8 DC DN, it's a minority of owners note the lens is noticeably softer wide open and only reaches its best sharpness once stopped down slightly.