The Panasonic LEICA DG VARIO-ELMAR 100-400mm F4.0-6.3 II ASPH is the second-generation super-telephoto zoom for Micro Four Thirds, offering 200-800mm full-frame equivalent reach with improved Dual I.S. compatibility and nano surface coating. It features dual Power O.I.S. and a refined optical design for better corner sharpness. The lens belongs to the premium LEICA DG VARIO-ELMAR telephoto series.
Product released: February 24, 2022
Latest firmware version
Version 1.1, released May 14, 2025
Verified by LatestUpdate: June 18, 2026
What's new in version 1.1
Improved operational stability when combined with certain cameras of other companies.
What is the Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400)?
The Panasonic LEICA DG VARIO-ELMAR 100-400mm F4.0-6.3 II ASPH is the second-generation super-telephoto zoom for Micro Four Thirds, offering 200-800mm full-frame equivalent reach with improved Dual I.S. compatibility and nano surface coating. It features dual Power O.I.S. and a refined optical design for better corner sharpness. The lens belongs to the premium LEICA DG VARIO-ELMAR telephoto series. It was originally released on February 24, 2022.
What is the latest firmware version for the Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400)?
The latest firmware version for the Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) is 1.1. It was released on May 14, 2025.
What changed in Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) firmware version 1.1?
Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) firmware version 1.1 includes the following changes: Improved operational stability when combined with certain cameras of other companies.
How do I update the Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) firmware?
To update the Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) firmware, download the latest version (1.1) from Panasonic's website. Follow Panasonic's installation instructions, which typically involve copying the firmware file to a memory card or connecting via USB. You can download the latest firmware from Panasonic's support page.
Where can I download the latest Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) firmware?
Details and download instructions for the latest Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) firmware (version 1.1) are on Panasonic's official release page: https://av.jpn.support.panasonic.com/support/global/cs/dsc/download/fts/dl/rsa100400.html
How do I check for Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) firmware updates?
You can track Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) firmware updates automatically on LatestUpdate.io. We monitor Panasonic's releases and notify you when new firmware versions are available, so you never miss an update.
Who makes the Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400)?
The Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) is manufactured by Panasonic. Visit the official product page for more information.