SUMMARY
Tamron has released firmware Ver. 3 for its 25-200mm f/2.8-5.6 Di III VXD G2 E-mount lens, which unexpectedly enhances its magnification ratio. The update increases the magnification to 1:2 or greater between 25-70mm, and to 1:1.7 between 35-50mm, effectively offering "half macro" and closer capabilities. This update makes the lens a notable upgrade over its predecessor, which had a magnification ratio of 1:3.13. Firmware updates are easily applied via Tamron's Lens Utility software using the lens's USB-C port.
TAKEAWAYS
Tamron firmware Ver. 3 improves close-focusing on the 25-200mm f/2.8-5.6 Di III VXD G2 lens.
Magnification ratio increased to 1:2 or greater (25-70mm) and 1:1.7 (35-50mm).
Updates are applied through Tamron Lens Utility software via the lens's USB-C port.