what you can use varies from ball park to ball park
usually you can find the restrictions on what camera and lenses you can bring into a MLB stadium by reviewing the rules set out in the information guide of the stadium:
" Cameras/Video Equipment
Visitors are welcome to bring video and
still cameras into the ballpark; however, tripods are not allowed in the seating areas. Recordings may be used for personal viewing only. Any other use, distribution or commercial use is prohibited. Fans may not distribute any copyrighted game information without permission of the Chicago Cubs "
Wrigley Field Information Guide | Chicago Cubs
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" Cameras/Video Equipment
Still and hand-held video cameras are welcome into the stadium, but tripods cannot be set up or block the view of other guests. Monopods are permitted into the ballpark.
Camera lenses 12 inches or smaller are permitted into the ballpark. Flash photography and video production is strictly prohibited. "
https://www.mlb.com/royals/ballpark/information/guide#c-content
Last edited by aslyfox; 08-13-2019 at 06:18 AM.