The Japanese store MapCamera shared the top 5 best selling cameras of the year (January 1, 2024 to September 15, 2024):
Fuji and Nikon are performing well while Canon is lagging behind. Probably the Fujifilm X100VI would be on top if Fuji could produce more of them. When it comes to Sony the A7cII is the best selling E-mount camera. But we need Sony to finally wake up and announce new FF cameras if they want to stay on top!
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Found via Digicameinfo