LockCircle BirdCage PRO-S a7 MK2 Flex Kit (Black)

LockCircle BirdCage PRO-S a7 MK2 Flex Kit (Black)
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LockCircle BCA7M2PROSLP-KIT Overview

The black BirdCage PRO-S a7 MK2 Flex Kit LockCircle is designed for use with the mirrorless Sony a7R II and a7S II cameras. It includes the form-fitted BirdCage PRO-S camera cage and LockPort Flex kit with MicroPort. The cage is specifically designed for Sony sound capture accessories using a multi-interface hot shoe compatible system. The cage's asymmetric design keeps the right-hand camera grip and controls open for easy operation and handling. It features numerous 1/4" and 3/8" mounting threads for accessory mounting.

The integrated LockPort Flex sets the HDMI port output in the best position to reach viewfinders and monitors with an improved cable layout on your rigs. The LockPort Flex comes with 3 micro-to-full-size HDMI cables (4, 6, and 8") to offer variety of mounting options. The MicroPort further secures the micro HDMI/mini USB connectors with safety locking, titanium knobs.

LockCircle BirdCage PRO-S Kit for Sony a7 II Series (Black)

The black BirdCage PRO-S from LockCircle is a form-fitting, professional cage for the Sony a7 II, a7R II, and a7S II cameras. It leaves the grip-side of the camera accessible for unencumbered operation and handling. Similar in nature to the BirdCage PRO model, the PRO-S (with the "S" standing for "sound") doesn't block the multi-interface shoe, allowing users to attach compatible external microphones and audio adapters. For accessory mounting, you'll find numerous threaded holes along the top, bottom, side, and front of the cage. The riser baseplate features a receiver for attaching an optional Meta Block or IMS block to support select Metabones and P+S Technik Positive-Locking System lens mount adapters.


  • Camera cage for a7 II series cameras: a7 II, a7R II, a7S II
  • Design leaves grip side open for access to controls and battery compartment
  • CNC Machined from billet aluminum
  • 1/4"-20 and 3/8"-16 accessory mounting threads
  • Riser baseplate compatible with optional Meta Block and IMS Block to support Metabones and P+S Technik Positive-Lock lens mount adapters
  • Optional top handle, shoe mount, focal plane pin, cable lock, and LockPort Flex micro-HDMI to HDMI adapter available

LockCircle LockPort FLEX Micro-HDMI to HDMI Cable Kit for BirdCage PRO

Connect and secure your HDMI cables when monitoring and outputting video when using the BirdCage PRO cage on your Sony alpha camera with the LockPort FLEX Micro-HDMI to HDMI Cable Kit from LockCircle. The kit includes a locking micro-HDMI male to HDMI Type-A female cable, the FlexPort HDMI cable lock, and three micro-HDMI male to HDMI Type-A female cables measuring 3.9, 5.9, and 7.9" in length.

The kit offers options of cable lengths for use with your camera output, and the FlexPort cable lock attaches to the BirdCage camera cage using two titanium screws.


BirdCage PRO camera cage for Sony alpha cameras

LockCircle BirdCage PRO-S Kit for Sony a7 II Series (Black) Specs

Support TypeCage
Grip TypeNone
Camera CompatibilitySony a7 II, Sony a7R II, Sony a7S II
Accessory MountingTop: 31 x 1/4"-20 Thread, 2 x 3/8"-16 Thread
Side: 34 x 1/4"-20 Thread, 2 x 3/8"-16 Thread
Front: 40 x 1/4"-20 Thread
Camera Mounting1/4"-20 Screw
DimensionsHeight: 1.99" / 5.05 cm (Optical Center)
Height: 4.3" / 10.8 cm
Weight7 oz / 200 g
Packaging Info
Package Weight1.35 lb
Box Dimensions (LxWxH)8.2 x 4.6 x 4.2"

LockCircle LockPort FLEX Micro-HDMI to HDMI Cable Kit for BirdCage PRO Specs

Cable TypesMicro-HDMI Male to HDMI Type-A Female
Cable Lengths1 x 3.9" / 10 cm
1 x 5.9" / 15 cm
1 x 7.9" / 20 cm
WeightFlex Port: 2.4 oz / 68 g
Packaging Info
Package Weight0.25 lb
Box Dimensions (LxWxH)4.7 x 2.4 x 1.2"
See any errors on this page? Let us know



does an a7iii fit in it ? do the lock flex cabling works, thanks
Asked by: Jos Castan
It will not fit. This model is for the A7 II line up of cameras, it will not work with the A7 III line up.
Answered by: Anonymous
Date published: 2019-09-26
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