MonsterAdapter LA-EA4r Upgrade Kit: A-Mount to E-Mount
The MonsterAdapter LA-EA4r Upgrade Kit for the Sony LA-EA4 is a conversion kit that users can install themselves. The original circuit board built into the adapter is replaced with the EA4r circuit board included in the package. Complete instructions and a video are provided.
The MonsterAdapter LA-EA4r Upgrade Kit offers numerous AF benefits for the Sony LA-EA4 lens adapter, including hundreds of AF points across the entire frame, eye-tracking for humans and animals, and more.
What are the benefits of upgrading the Sony LA-EA4 lens adapter with the MonsterAdapter LA-EA4r Upgrade Kit?
- Take advantage of the latest Sony E-mount cameras with classic A-mount lenses featuring a screw-drive autofocus mechanism.
- Take advantage of the retro look of classic lenses from the 1980s.
- No loss of light intensity or sharpness due to the elimination of the translucent mirror.
- High-precision autofocus achieved by directly utilizing the camera's on-sensor focus algorithm. This eliminates the need for AF fine-tuning.
- Supports autofocus tracking for human and animal eyes, provided the camera supports this feature.
- Take advantage of the many AF points on modern cameras, rather than just the original 15. For example, with the Minolta/Sony AF 500 mm f/8 telephoto lens, you can choose between a single central AF point or up to 80 AF points spread across the frame.
- Easily update the firmware by connecting the camera to a computer using a USB cable.
| LA-EA4r (Modified) | LA-EA4 (Original) | LA-EA5 | |
| Focus on Technology | On-sensor PDAF | PDAF modules | On-sensor PDAF |
| Key Points | Hundreds *1 | 15 points | Hundreds *1 |
| Focus Points Coverage | Full screen *1 | Middle | Full screen *1 |
| A translucent mirror is required | No | Yes | No |
| Autofocus tracking for eyes on people and animals | Yes | limited | Yes |
| Support for Screw Drive Lenses | Yes | Yes | Yes *2 |
| Support for SSM/SAM lenses | Yes | Yes | Yes |
| Support for A-mount teleconverters | Yes | No | No |
| For AF 500mm f/8 SLR | 80s screen cover | center AF point only | center AF point only |
| Video AF | No | limited | No |
*1 The specific number may vary depending on the camera model
*2 Works only with the A1, A7R4, and A6600
Supported camera models
| Supported: | LA-EA4r (modified) | LA-EA4 (Original) | LA-EA5 |
| Alpha 7 II | Y | Y | MF |
| Alpha 7 III | Y | Y | MF |
| Alpha 7 IV | Y | MF | Y |
| Alpha 7R II | Y | Y | MF |
| Alpha 7R III | Y | Y | MF |
| Alpha 7R IIIA | Y | Y | MF |
| Alpha 7R IV | Y | Y | Y |
| Alpha 7R IVA | Y | Y | Y |
| Alpha 7S III | Y | MF | MF |
| Alpha 7C | Y | Y | MF |
| Alpha 9 | Y | Y | MF |
| Alpha 9 II | Y | Y | MF |
| Alpha 1 | Y | MF | Y |
| Alpha 6100 | Y | Y | MF |
| Alpha 6300 | Y | Y | MF |
| Alpha 6400 | Y | Y | MF |
| Alpha 6500 | Y | Y | MF |
| Alpha 6600 | Y | Y | Y |
| ZV-E10 | Y | Y | MF |
| Older models: | |||
| Alpha 7 | MF | Y | MF |
| Alpha 7R | MF | Y | MF |
| Alpha 7S | MF | Y | MF |
| Alpha 7S II | MF | Y | MF |
| Alpha 3000 | MF | Y | MF |
| Alpha 3500 | MF | Y | MF |
| Alpha 5000 | MF | Y | MF |
| Alpha 5100 | MF | Y | MF |
| Alpha 6000 | MF | Y | MF |
| All NEX cameras | MF | Y | MF |
*1 “Y” stands for autofocus enabled; “MF” stands for manual focus
*2 Please note that the table above compares the compatibility of Screw Drive lenses; SSM/SAM lenses are not included.
You can find more details about the supported cameras right here on MonsterAdapter.
Fully reversible modification
You can easily and completely restore the LA-EA4 to its original condition after the modification, as long as you store the removed circuit board and mirror in a safe place.
You can find more information about MonsterAdapter on this website at MonsterAdapter – Innovative and Sustainable Lens Adapters.
Technical data
Dimensions & Weight
- 95 x 65 x 15 mm (packaging)
- 5 g of the circuit board alone, 25 g in total
Compatibility List: Lenses & Cameras
Prime Lenses
- Minolta/Sony AF 16mm f/2.8 Fisheye
- Minolta/Sony AF 20mm f/2.8
- Carl Zeiss Distagon T* 24mm F2 ZA SSM
- Minolta AF 24mm f/2.8
- Minolta AF 28mm f/2
- Minolta/Sony AF 28mm f/2.8
- Minolta AF 35mm f/1.4
- Minolta/Sony AF 35mm f/1.4 G
- Minolta AF 35mm f/2.0
- Carl Zeiss Planar T* 50mm F1.4 ZA SSM
- Minolta/Sony AF 50mm f/1.4
- Minolta AF 50mm f/1.7
- Minolta/Sony AF 50mm f/2.8 Macro (D)
- Minolta AF 50mm f/3.5 Macro
- Minolta AF 85mm F1.4 and G/GD/GD Limited
- Sony Carl Zeiss Planar T* 85mm F1.4 ZA
- Minolta AF 100mm f/2.0
- Minolta/Sony AF 100mm f/2.8 Macro (D)
- Minolta AF 100mm f/2.8 Soft Focus
- Sony Carl Zeiss Sonnar T* 135mm F1.8 ZA
- Minolta AF 135mm f/2.8
- Minolta AF 200mm f/2.8 APO/HS
- Minolta AF 200mm f/4 Macro APO G
- Minolta AF 300mm f/2.8 HS-APO G
- Minolta AF 300mm F4 HS-APO G
- Minolta AF 400mm f/4.5 HS-APO G
- Minolta/Sony AF 500mm f/8 SLR
Zoom Lenses
- (Konica)Minolta/Sony AF DT 11-18mm F4.5-5.6 (D)
- Carl Zeiss Vario-Sonnar T* 16-35mm F2.8 ZA SSM (SAL1635Z)
- Carl Zeiss Vario-Sonnar T* 16-35mm F2.8 ZA SSM II (SAL1635Z2)
- Sony Carl Zeiss Vario-Sonnar T* DT 16-80mm F3.5-4.5 ZA
- Sony DT 16-105mm f/3.5-5.6
- Konica Minolta AF 17-35mm f/2.8-4 D
- Minolta AF 17-35mm f/3.5 G
- Minolta AF 20-35mm f/3.5-4.5
- Carl Zeiss Vario-Sonnar T* 24-70mm F2.8 ZA SSM (SAL2470Z)
- Carl Zeiss Vario-Sonnar T* 24-70mm F2.8 ZA SSM II (SAL2470Z2)
- Minolta AF 24-85mm f/3.5-4.5
- Minolta AF 24-105mm f/3.5-4.5
- Minolta AF 28-70mm f/2.8 G
- (Konica)Minolta AF 28-75mm f/2.8
- Minolta AF 28-85mm f/3.5-4.5
- Minolta AF 28-135mm f/4-4.5
- Minolta AF 35-70mm f/4
- Minolta/Sony AF 70-200mm f/2.8 G
- Sony 70-200mm f/2.8 G SSM II (SAL70200G2)
- Minolta AF 70-210mm f/3.5-4.5
- Minolta AF 70-210mm f/4 Macro
- Minolta AF 70-210mm f/4.5-5.6
- Minolta/Sony AF 75-300mm f/4.5-5.6
- Minolta AF 80-200mm f/2.8 HS-APO G
- Minolta AF 100-200mm f/4.5
- Minolta AF 100-300mm f/4.5-5.6 APO
- Minolta AF 100-300mm F4.5-5.6 APO (D)
- Minolta AF 100-400mm F4.5-6.7 APO
- Minolta AF 3x-1x Macro
Third-Party Lenses
- Tamron 10-24mm F3.5-4.5 SP Di
- Tamron 20-40mm F2.7-3.5 SP Aspherical IF
- Tamron SP AF 28-75mm F2.8 XR Di LD Aspherical [IF] Macro
- Tamron AF 28-300mm F3.5-6.3 XR Di LD Aspherical [IF] Macro
- Sigma AF 24mm f/2.8
- Sigma 30mm f/1.4 EX DC
- Sigma AF 105mm F2.8 EX [DG] Macro
- Sigma AF 180mm f/2.8 Macro
- Tokina AT-X Pro DX 11-16mm f/2.8
- Tokina AT-X AF 17mm f/3.5
- Tokina 19-35mm f/3.5-4.5
- Tokina 11-16mm f/2.8
For lenses not listed here, optimal focusing performance cannot be guaranteed.
You can find the compatibility list for the LA-NE1 on the page MonsterAdapter Documents & Downloads On the website or directly from the manufacturer: www.monsteradapter.com
What's Included
- EA4r board with firmware v09.
- User Manual (Download)
Warranty & Support
Warranty
- 2-year manufacturer's warranty.
(Available only from Ingma Pictures)
Support
- Through Ingma Pictures, the official MonsterAdapter dealer and distributor for Europe.

