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Sony A1 Modular Plates

SKU Plates for Sony Alpha 1
$100.00 to $205.00


| The BA1 plate system is compatible with the Sony A1, A7RIV, A9II, and A7SIII |

The Really Right Stuff BA1 camera body plates are custom designed for the most secure fit as possible on the Sony Alpha-1, A7RIV, A9II, and A7SIII. Each plate is precision machined from solid blocks of 6061-T6, aircraft grade aluminum.

The Sony A1 camera plate is fully compatible with any standard 1.5"-dovetail style quick-release system. The plate also has contoured anti-twist flanges for a perfect fit, which prevents twisting between the cameras and plate. The BA1 quick-release plates utilize a custom machined 1/4"-20 threaded, captive-style mounting screw that threads into the tripod mounting socket of your camera body. 

As part of a modular system, the BA1 plate still functions as a traditional camera mounting plate, but also has the added flexibility of accepting a separate dedicated vertical L-Component to create a fully modular L-Plate with two dovetail mounting surfaces. 

Product Guarantee
All Really Right Stuff brand products are guaranteed to the original purchaser to be free of defects in materials or workmanship for five (5) years from the date of purchase. Product will be repaired or replaced at our option.


  1. CNC machined 6061-T6 aluminum
  2. Anodized; Type II Black
  3. Laser engraved center marks
  4. Integrated QD (Quick Detach) sockets for quick-detach strap systems
  5. 1/4"-20 threaded accessory mounting sockets
  6. Hand strap lug
  7. Full access to camera accessory ports
  8. Access to battery without removing plate
  9. RRS standard dovetail


  • Length: 5.1 in. / 129mm
  • Width: 2.7 in. / 68mm
  • Height: .7 in. / 19mm
  • Weight: 3.oz /84g 

In the Box

(1) BA1 Base Plate
(1) B107Custom 1/4"-20 x 0.4" captive button head screw
(1) HexKey-5/32-inch
(1) User Manual