Did you know, the new GH3 battery grip relocates the tripod mount to the right side? We're not talking millimeters here, it's way off to the right. This new position can be highly problematic as it will throw off the optical center of your lens when you want to mount your camera to rigs, and use matte boxes, or even follow focus systems. So one solution is to just not use a battery grip, the other is to use an adjustable 15mm baseplate like Stewart Eastep has shared. [Thanks Stewart].




If you need to get proper alignment back on a set of 15mm rails, check out a few of the adjustable baseplates on the market. Here Stewart is using one of the CAVision adjustable baseplates which offer up/down as well as left/right adjustments found via B&H (click here).

CAVISION Adjustable BasePlate with 15mm Rails

Ben R
I also have a GH3 and the battery grip threads are definitely off-center, creating issues on a Steadicam or some teleprompters. Here are a couple of good options for affordable and versatile balancing plates to solve this problem:
1) Search Ebay for "Steady Dragon Offset Correction Plate"
https://www.ebay.com/itm/281167032204
2)Barber Tech Steddiepod Offset Balance Plate
https://www.bhphotovideo.com/c/product/783658-REG/Barber_Tech_SPOBP1_Steddiepod_Offset_Balance_Plate.html
William
Does anyone know how far from the center this GH3 battery grip tripod mount is shifted in mm or inches?
Would something like the following baseplates work to fix this?
https://ginirigs.com/apple-baseplate/
or this?
https://www.bhphotovideo.com/c/product/798846-REG/Ikan_ELE_SBP_EV2_Adjustable_DSLR_Baseplate.html
Dean
OMG I still have this cavision from 10 yrs ago. From my Brevis rig