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Really Right Stuff Base Plate for Select Sony Alpha a7 Series Cameras

BH #REBA9BP • MFR #BA9-B
Really Right Stuff Base Plate for Select Sony Alpha a7 Series Cameras
Key Features
  • For the Sony Alpha a9, a7 III, & a7R III
  • Adds Quick Release Functionality
  • Arca-Type Compatible Dovetail Mount
  • Black Anodized 6061-T6 Aluminum
The Base Plate for Select Sony Alpha a7 Series Cameras from Really Right Stuff is designed with anti-twist flanges to keep the mounted camera from twisting. Once the dovetail plate is on, quick release functionality has been added to the camera. Also, this base plate is compatible with all Really Right Stuff clamps and most other Arca-type heads.
More Details
Discontinued
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Really Right Stuff BA9 Overview

The Base Plate for Select Sony Alpha a7 Series Cameras from Really Right Stuff is designed with anti-twist flanges to keep the mounted camera from twisting. Once the dovetail plate is on, quick release functionality has been added to the camera. Also, this base plate is compatible with all Really Right Stuff clamps and most other Arca-type heads.

The CNC machined 6061-T6 aluminum plate maintains complete access to the battery door without obstructing the tilting LCD monitor of the camera, and an option for an L-component is available that will fit the plate's modular design and make a custom-fit L-plate.

This plate has been Type II black anodized, which makes it resistant to scuffs and scratches. Furthermore, the base plate has a laser-engraved center mark on the back to align it on a head.

Compatibility
Sony Alpha a9, a7 III, and a7R III
UPC: 818413026094

Really Right Stuff BA9Specs

Mounting
1x 1/4"-20 Male
1x 1/4"-20 Female
Strap Loop
No
Quick Release Plate Type
Arca-Type
Quick Disconnect System
No
Bubble Level
No
Materials
Aluminum
Dimensions
5.04 x 2.4 x 0.67" / 128 x 61 x 17 mm
Weight
3.32 oz / 94 g
Packaging Info
Package Weight
0.4 lb
Box Dimensions (LxWxH)
5.3 x 3.8 x 0.8"

Really Right Stuff BA9 Reviews

See any errors on this page? Let us know

question

does this have a screw hole so I can use it with a tripod?
Asked by: Bedri S.
Yes- and if you have an ARCA-Swiss tripod head then you can mount this directly to the tripod without the need for an additional plate.
Answered by: Laird
Date published: 2019-06-25

question

Can I use RSS base plate with Techart Pro Auto Focus adaptor? Thanks.
Asked by: Sam C.
The base plate will have no effect on the Techart Pro adapter. You can use both.
Answered by: Jacob C.
Date published: 2019-03-20

will this work on an a7r iv?

will this work on an a7r iv?
Asked by: Cody
No.
Answered by: Rob
Date published: 2021-02-04

question

Will this work with the a7 III?
Asked by: Ara
RRS website says that it does fit the A7III however I have not tried this product on mine.
Answered by: Rob
Date published: 2019-02-26

Do I have to remove the battery door for this to ...

Do I have to remove the battery door for this to fit a7iii? I never take the battery out and charge my camera via usb. I don't want to move the door.
Asked by: Luis
No.
Answered by: Rob
Date published: 2021-01-18

Will this work with a7 uv?

Will this work with a7 uv?
Asked by: Chuck
Unfortunately RRS does not currently make a plate for the Sony A7IV. However, this SmallRig is compatible: https://bhpho.to/33eQBz8
Answered by: Dan W
Date published: 2022-01-11

Can I use this on a A7sii? All I care about is ...

Can I use this on a A7sii? All I care about is access to the battery for change-out.
Asked by: Steve
If it's the same body as the a7iii then my guess is yes
Answered by: Sunny
Date published: 2021-07-16

Does this work with the Manfrotto quick release ...

Does this work with the Manfrotto quick release plates? Some of these brackets don't.
Asked by: Jose
No, you need an Arca Swiss compatible head.
Answered by: Rob
Date published: 2021-01-27
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