SMALLRIG V Mount Battery Plate Adapter with Extension Arm Dual 15mm Rod Clamp, Dual 14.8V D-Tap/8V/12V DC Output, for Mirrorless/DSLR Camera, for Sony/for Nikon/for Canon/for Panasonic/for Fujifilm/for RED Komodo - 3499 :
Is Magic Lantern firmware available for Sony or Nikon cameras? - Quora