BCN rankings have released the latest numbers for the full frame mirrorless camera market in Japan, and Sony's near 100% market share took a big hit after the release of the Canon EOS R and the Nikon Z series cameras.
Full frame mirrorless market share breakdown (Japan):
- Sony 67%
- Canon 22.1%
- Nikon 10.4%

These numbers may be inflated since Canon and Nikon just released their full frame mirrorless systems. It'll be interesting to watch over the next few months whether or not Canon and Nikon can maintain or even increase their market share in the segment.
If we had to make a prediction, Canon will likely have 50% of the market by this time next year once they've released a few more EOS R bodies and lenses.
Nikon's numbers will likely increase once the Z6 starts to ship in large numbers next month.
No word on the market share breakdown in Europe or North America yet.
Good for us! I can't wait for more lenses. Based on the performance of my RF 50 I am just salivating to see what comes next.
It's sales in a month. For every 100 FF mirrorless cameras sold in Japan in October, 67 were Sony, 22 were Canon, 11 were Nikon (roughly). It will change every month, influenced heavily by whoever is launching a new product that month.
If so, these initial numbers reflect more of expected demand than actual demand. Give them awhile and those two will meet. But initially, it is really what demand planners for retailers expected to sell.
Price is a factor in sales volume, and the Z7 was not as well received by reviewers based on its price. At $1200 more than the R, it should perform much better than it does. Its a fine camera, but pretty much overpriced as most new camera releases are.
Then, they must divide sales between the Z6 and Z7 with a fixed number of Nikon users, each one will be limited in initial sales volume.
Not shipped units but sold units. BCN has deals with a large percentage of the larger camera retailers and receives sales figures from them. They don't provide data on cameras only, but all kinds of products, appliances being a big part of their market info.
You may be thinking of CIPA.
The slow evolution to MILCs is inevitable simply because the manufacturing process is mostly automated, thus lowering the production cost.
My speculation: Autofocus on the Z7 doesn't feel very good with adapted (Nikon) lenses, while adapted Canon lenses feel great on the EOS R. That greatly limits the number of people will buy one as another camera that will work well with their existing gear.