Left Handed Brisket wrote in post #18627755
Seems one of the remaining differences between Canon and Sony is low light focusing with Canon still comfortably leading. In my experience, concerts can often require fast and accurate low light focusing.
I'de suggest you read up on how low light that is, and what the 1Dxii is capable of. I'm not going to get caught up on the photo aspects, as I think the 1Dx mark 1, 1Dx mark 2, 5Div, 6Dii, A7riii, A7iii, A9 make easy work of the situation. In worst case, use the illuminating light. All these bodies do -3ev. BTW, Michael the Maven has the A9 beating out the 1Dxii in a low light shooting contest by a hair, and the A9 seems to beat out the D5 by a larger margin in Max Yurev's test.
When it comes to video, you can arguably get by with 2 lenses, Batis 25, and Sony FE 85.
This combined rig would be considerably lighter, smaller, and easier to handle than the equivalent Canon, which there really is none.
With The batis 25, you can toggle between 25 and 1.5 crop, giving you close to 35mm. For most of your video A roll footage, that's you're natural shooting Scenario. 85mm can toggle to 135, which would be most of your B roll footage. Canon offers nothing like that, which is huge for video shooters.
Video is where there will be MASSIVE differences between the systems, given that TS is interested in it, the video aspects arent straight forward as photography.
Sony A7rii/A7riii/A9 - FE 12-24/4 - FE 24-240 - CV 21/3.5 - FE 35/2.8 - SY 35/1.4 AF - FE 50/1.8 - FE 85/1.8 - EF 135/1.8 Art - F 600/5.6 - CZ 100-300 - Astro Rok 14/2.8 - Tamron 28-75/2.8 RXD, 70-200/2.8 VC