All-in-one super zooms, also known as workhorse lenses, give photographers incredible versatility from a single lens. The Sigma 16-300mm f/3.5-6.7 DC OS | C is a prime example. Designed for APS-C mirrorless cameras, it offers an impressive 18.8x zoom range, covering everything from wide-angle to telephoto without changing lenses.
Now, Sigma has released a new firmware update for the superzoom, improving AF (autofocus) operation speed, tweaking peripheral illumination correction, and fixing occasional blackout/freesing issue when used with the Canon EOS R6 Mark III.
The latter hints at why photographers shouldn't get too excited. While the 16-300mm f/3.5-6.7 DC OS | C is available for Canon RF, Fujifilm X, Sony E and L-mount, the firmware update is only for the Canon RF version.
Firmware overview
Ver.1.0.1
Download link Windows
Download link Mac OS
Improvements
• Fixed an isolated issue where the monitor blacks out and the camera freezes during shooting when used with the Canon EOS R6 Mark III
• Improved autofocus (AF) operation speed
• Optimized peripheral illumination correction data to improve correction accuracy
Pro Advice
If you caught Episode 4 of Bokeh Face: Digital Camera World podcast, above, we discussed the best time to install firmware updates, why they matter, and what issues they can cause. It's a helpful listen if you're unsure when – or whenever – you should update.
It's smart to wait a week or two after release to see if any users hit snags. In the past, brands have had a few hiccups with major updates – for instance, introducing memory-setting bugs or minor interface glitches before being reissued.
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