Summary
- Tamron has released firmware Ver.
- 3 for the 25-200mm F/2.8-5.6 Di III VXD G2.
- The update applies to the A075 model for Sony E-mount.
- Maximum magnification between 25mm and 70mm improves to 1:2 half-macro or greater.
- Between 35mm and 50mm, the lens reaches a maximum magnification ratio of 1:1.7.
- With older firmware, the corresponding maximum magnification ratio was 1:3.1.
- The update is installed through TAMRON Lens Utility.
Tamron has released firmware Ver. 3 for the 25-200mm F/2.8-5.6 Di III VXD G2, improving its maximum magnification ratio at focal lengths between 25mm and 70mm.
The new update applies exclusively to the Sony E-mount version of the Tamron 25-200mm F/2.8-5.6 Di III VXD G2, model A075, and became available on July 29, 2026.
The change is significant for photographers who use the versatile zoom lens for close-up images, as Tamron states that it can now deliver a magnification ratio of 1:2 or greater across a substantial part of its focal-length range.
What firmware Ver. 3 offers
After installing the new firmware, the lens’ maximum magnification ratio at focal lengths between 25mm and 70mm improves to 1:2 half-macro or greater.
This means that a subject can be projected onto the camera sensor at a size corresponding to at least half of its actual dimensions, enabling more impactful and detailed close-up images.
The update does not turn the lens into a true 1:1 macro lens, but it significantly expands its usefulness for photographing small objects, details, products, plants and everyday subjects.
Maximum magnification of 1:1.7 between 35mm and 50mm
The greatest improvement is found at focal lengths between 35mm and 50mm.
Within this range, the Tamron 25-200mm F/2.8-5.6 Di III VXD G2 can now achieve a maximum magnification ratio of 1:1.7, exceeding the conventional 1:2 half-macro level.
According to Tamron’s figures, with firmware Ver. 2 or earlier, the maximum magnification ratio in the cited example was 1:3.1. With firmware Ver. 3, it reaches 1:1.7, allowing the subject to occupy a noticeably larger part of the frame.
Which lens is supported
The update is intended for the Tamron 25-200mm F/2.8-5.6 Di III VXD G2, model A075, for Sony E-mount.
The lens is designed for full-frame mirrorless cameras, while it can also be used on Sony camera bodies equipped with APS-C sensors.
The announcement does not apply to other Tamron lenses or versions for different mounts.
How to install the update
Firmware Ver. 3 is installed through the TAMRON Lens Utility application on a computer.
The user connects the lens to the computer and follows the update procedure provided by the application. Tamron lists Ver. 3 as the latest firmware version for this model.
Before updating, it is useful to check the firmware version already installed on the lens and to avoid disconnecting the equipment during the process.
What we think
This is an unusually substantial lens firmware update, as it is not limited to compatibility fixes or minor operational improvements. Increasing the maximum magnification ratio from 1:3.1 to as much as 1:1.7 at selected focal lengths adds a practical capability to the Tamron 25-200mm G2 without requiring new equipment. It does not replace a dedicated 1:1 macro lens, but it makes an already versatile zoom more useful for travel and everyday close-up photography.
Frequently asked questions
Which lens is supported by firmware Ver. 3?
It applies to the Tamron 25-200mm F/2.8-5.6 Di III VXD G2, model A075, for Sony E-mount.
What does the new update improve?
It improves the maximum magnification ratio at focal lengths between 25mm and 70mm to 1:2 half-macro or greater.
What is the highest magnification ratio after the update?
Between 35mm and 50mm, the lens reaches a maximum magnification ratio of 1:1.7.
Does the lens become a true 1:1 macro lens?
No. Its maximum ratio is 1:1.7, meaning that it exceeds half-macro performance but does not reach the 1:1 ratio of a true macro lens.
How is the firmware installed?
The update is installed through the TAMRON Lens Utility application on a computer.
