BCN Rankings published their 2019 report and Ricoh has 3.1% of the DSLR market in Japan (BCN Ranking collects real sales data from approximately 40% of the Japanese retailers):
Digital cameras with a fixed lens
- Nikon (31.5% share)
- Canon (29.8% share)
- Sony (11.9% share)
DSLR cameras
- Canon (57.4% share)
- Nikon (39.3% share)
- Ricoh (3.1% share)
Mirrorless cameras
- Canon (31.6% share)
- Olympus (23.5% share)
- Sony (22.7% share)
Video cameras
- Panasonic (45.8% share)
- Sony (35.1% share)
- JVC Kenwood (13.1% share)
Action cameras
- GoPro (74.3% share)
- Sony (8.5% share)
- SAC (7.2% share)
Via NikonRumors