Shotkit made an interesting survey. Summary of Our Key Findings

1. Mirrorless cameras are more popular than DSLR cameras for professional photographers. 63% of professional photographers use a mirrorless camera, while 36% of them use a DSLR camera. Only 1% use both.
2. Mirrorless cameras are more popular than DSLR cameras for amateur photographers too (but not by much) . 54% of amateur photographers use a mirrorless camera, while 46% of them use a DSLR camera.
3. The most common reason why professional photographers use mirrorless cameras is that they are smaller and lighter . The second most common reason was that they offer better autofocus.
4. The most common reason why amateur photographers use mirrorless cameras is that they are smaller and lighter . The second most common reason was that they offer in-body stabilization.
5. Nikon is the most popular camera brand used by professional photographers . 31% of professionals use Nikon, closely followed by Canon (28%) and Sony (20%).
6. Canon is the most popular camera brand used by amateur photographers . 27% of amateurs use Canon, closely followed by Nikon (25%) and Sony (16%).
7. The Sony a7III is the most popular camera used by professional photographers . 7% of pros use the Sony a7III mirrorless camera , with the Canon R6 mirrorless camera and Nikon D750 DSLR camera coming in joint 2nd and 3rd.
8. The Alpha a7III and the Nikon D85 0 are the most popular cameras used by amateur photographers . One is a mirrorless camera and the other is a DSLR.
9. Professional photographers like to use the Sony a7III for their personal photography pursuits too . The Fujifilm X-T3 and Nikon D850 are also popular choices.
10. The most common reason why both amateur and professional photographers use DSLR cameras is due to the superior lens selection . The second most common reason was that switching to the mirrorless system is too expensive.