The A1 is the best sports and wildlife camera from Sony. The A9/A9II follow closely behind . All three have that super fast reading stacked BSI sensor with gives super fast autofocus and fast frames per second with full AF-C.
The A1 does 50mp shots at 30fps with 120 autofocus and 120 Exposure calculations per second and a 9.3million dot EVF with 240fps refresh rate. It is the favorite of pro wildlife and sports shooters worldwide.
The A9/A9II have the first-generation stacked BSI sensor, and will do 24mp shots at 20fps with 60 Autofocus and 60 Exposure calculations per second.
Next choice would be the Sony A74, its 33mp sensor can do 10fps.
All A1, A9/A9II, A7IV cameras have the best of Sony's top-rated autofocus, tracking and AI. And superb video shooting up to 8k (A1)
Most of the world's news services have switched to Sony mirrorless and are using A1, A9II, A7RIV (61mp), A7SIII , FX3, FX6 for all their staff still photographers and staff videographers Worldwide.
Associated Press :
https://alphauniverse.com/stories/why-the-associated-press-just-switched-to-sony/Gannet Media/USA Today :
https://petapixel.com/2021/11/17/sony-is-now-the-exclusive-camera-provider-for-gannett-and-usa-today/UK Press:
https://www.dpreview.com/news/4545693607/the-uk-largest-news-agency-partners-with-sonyCanadian Press:
https://petapixel.com/2022/01/31/canadas-largest-news-organization-moves-exclusively-to-sony-cameras/#:~:text=Canada's%20Largest%20News%20Agency%20Moves%20Exclusively%20to%20Sony%20Cameras,-Jan%2031%2C%202022&text=The%20Canadian%20Press%2C%20the%20largest,provider%20for%20the%20media%20company
I personally was a pro Nikon and Canon shooter for four decades (both brands), and moved to Sony mirrorless in 2017 and have never look back . I shoot all subjects around the world and Sony mirrorless is tops for my sports and wildlife shooting.
First an A9 shot, with the superb Sony 135mm f1.8 GM lens. A veteran skateboarder in Venice Beach, California. 135mm, ISO 400, f1.8, 1/2000 sec.
Second an A1 shot, with the excellent Sony 200-600mm lens. A Snowy Egret takes off from its watery perch on the Caribbean island of Sint Maarten/St. Martin. 391mm, ISO 1600, f6.3, 1/4000 second.
Third and fourth , Sony A1 and Sony 200-600mm lens. Kids being pulled by fast speedboat on Brookings Lake, Manistee National Forest, Michigan. 600mm, ISO 1000, f9, 1/2000 sec. These are the first two shots of a short 30fps burst, cropped about 30%.
Note: Click on download to see the best quality here in UHH.
I have personally owned Sony A6500, A7RII, A7RIII, A7III, A9 and currently own Sony A7RIV, A1, A7SIII.
Sony A1:
https://www.sony.com/ug/electronics/interchangeable-lens-cameras/ilce-1Sony A9II:
https://www.sony.com/za/electronics/interchangeable-lens-cameras/ilce-9m2Sony A7IV:
https://www.sony.com/en-ae/electronics/interchangeable-lens-cameras/ilce-7m4Another key point about going to Sony E-mount. The E-mount is the most produced and used mirrorless lens mount in the world, with nearly 200 E-mount lens choices from Sony, Sigma, Tamron, Samyang/Rokinon, Zeiss, Yonguo, Tokina, Viltrox, Meike and others.
https://en.wikipedia.org/wiki/List_of_Sony_E-mount_lenseshttps://en.wikipedia.org/wiki/List_of_third-party_Sony_E-mount_lensesCheers and best to you.