Well most reviewers are saying that above iso 800 the R7 images start to look awful, what about your R6 Alan : what iso are you happy to go up to ?
Considering APS-C cameras for the past 10 years have been able to shoot above ISO 800 without images looking awful, I would have to believe the reviewer who wrote or said that is totally incompetent or a Sony troll!
Here were the reviews I could find that mentioned image quality at various ISO's...
Camera Jabber: As yet, it’s not possible to process raw files from the R7 so I’m only able to look at the Jpegs. The results at ISO 25,600 look good and I might even use to ISO 32,000 if the circumstances really called for it, but if possible I’d make 12,800 the maximum value I’d used at this strikes a nice balance between the level of detail and noise that’s visible.
Imaging Resource: While we won't know the full story on the R7's image quality until it goes through our lab, the initial impressions are quite positive. The camera performs well at higher ISOs, including up to ISO 6400, which is as high as I got during daytime shooting.
The Phoblographer: I almost never shot below ISO 800. ISO 3200 is incredibly clean. But we’re going to need to do more work with the RAW files to see more results.
Just a tad bit above ISO 800 I would say!