Which RF glass is actually gonna give me the best portrait results on the R1 given how beefy that body is? I just upgraded from the R5 and a 1DX Mark III setup because I needed the speed for some sports stuff I do, but I have a huge corporate portrait gig coming up in Chicago next month and I'm honestly torn on what to mount on this beast. Ive been shooting professionally for over a decade so I know the 85mm 1.2 is the gold standard usually, but I am worried about the focus speed when Im trying to use the R1s new eye tracking features to their full potential.

The R1 is just a different animal compared to my older bodies. The AF is so sticky its almost scary but Ive heard mixed things about the older RF 85mm being a bit sluggish compared to some of the newer motors. I have about 3000 dollars set aside for a new prime specifically for this body. I was looking at the 135mm f1.8 but Im worried it might be too long for some of the tighter office spaces Ill be working in, even if the bokeh is creamy as hell.

Then theres the 50mm 1.2 which is amazing but maybe too normal for high-end headshots? I dont know. Ive always been an 85mm guy but with the R1s weight and the vertical grip built-in, the balance feels weird with some of my adapted EF glass and I really want to stick to native RF for the data throughput. Does the 85mm DS version make sense or is the light loss not worth it for the smoother transition? My clients are pretty picky about the look but I need the hit rate to be 100% because these executives dont give me more than five minutes of their time.

Im also wondering if anyone has tried the 28-70mm f2 on it. Its a brick of a lens but it might actually balance well on the R1 and give me the flexibility I need if the room is small. Just feels like a waste to put a zoom on a flagship meant for speed unless the AF is just that much better. What are you guys running for serious portrait work when youve got the R1 in hand?