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
Last checked for updates: Aug 2, 2026 15:30 UTC
What's new in version 1.1
Improved operational stability when combined with certain cameras of other companies.
What is 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 of Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400)?
The latest firmware version of 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 Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400)?
Panasonic LEICA DG 100-400mm F4.0-6.3 II (H-RSA100400) is manufactured by Panasonic. Visit the official product page for more information.