Leica SL2-S firmware update 6.3.0

Plain sailing – with one precaution.

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Firmware 6.3.0 installed.

Leica is to be commended for its continuing support of the discontinued Leica SL2-S body.

They just issued firmware update 6.3.0 which does the following:



Changes in firmware 6.3.0.

While I have not had the DNG file issue when using Adobe Denoise, it’s nice to see that Leica is on top of this.

The PDF file listing the above is erroneously captioned ‘6.2.0’, but no matter, and there are no English installation instructions, but the process is easy.

I just updated and had no issues. It took 4 minutes during which time the rear red LED flashed. After copying the firmware file to the SDHC card and starting the update I was prompted to insert a fresh, fully charged battery. I suggest when you run the update (Menu Page 6->Camera Information->Camera Firmware Version->Start Update) you save your user profile to the SDHC card. The firmware update will ask if you want to do this, as long as you are doing this using the camera, not an iPhone.

It’s a laborious task to set up user profiles and the camera will be reset to the factory defaults after the firmware update.

Precaution:

Do not update the firmware using your iPhone, which is an option. That update path will not allow you to save your user settings file – there is no prompt to do so. If you must use the iPhone be sure to save the user settings file to the SDHC card first. (Menu Page 4->User Profile->Manage Profiles->Export Profiles->Yes).

To recover/reinstall the profile(s) go to Menu Page 4->User Profile->Manage Profiles->Import Profiles->Yes.

Worked for me and all my preferred settings are once more active.

Paul Prudhomme

Cajun cooking.




Cajuns migrated from southern France to Nova Scotia whence they were kicked out by the British, moving to French Louisiana. This was before Jefferson made the Louisiana Purchase, buying Louisiana and a bunch of other states from Napoleon. Nappy promptly wasted the proceeds on his disastrous invasion of Russia.

Paul Prudhomme (1940-2015) was a Louisiana born chef, the youngest of thirteen (!) children, who learned cooking from his mother. The home had no refrigerator so everything was sourced daily from the surrounding land. He remains the dean of French influenced Cajun cooking, and of its Creole cousin with its more African focus.

Cajun cooking has a strong focus on chicken, shrimp and fish, and both the classic ‘Chef Paul Prudhomme’s Louisiana Kitchen‘ (Cajun and Creole) and ‘Chef Paul Prudhomme’s Seasoned America‘ (countrywide American dishes) make extensive use of spices, often as many as nine or more. So probably ill suited to bland English palates. The books were published in 1984 and 1991 and, rightly, remain in print. Invest in these and your spice drawer will grow. Mine comes in at no fewer than 68.

Prudhomme opened his famous restaurant K Paul’s Louisiana Kitchen in 1979 (now closed) and I was fortunate to dine there, in beautiful New Orleans, in 1982, enjoying a still memorable seafood and Andouille sausage gumbo with a Cajun Martini*. The line was out around the corner and I was accompanied by my girlfriend of the time, appropriately a Southern beauty and native of nearby Mobile, Alabama. As we waited behind a couple of cops, she got into conversation with one and they discovered that they has been high school classmates some 20 years ago!

Anyway, if you like properly and subtly spiced food in Cajun and American styles these two books are strongly recommended. Clearly Louisiana natives have abundant time on their hands as some of these recipes are anything but speedy. No problem for this retired old fart. Be warned that the layout is dated – solid text interleaved with (beautifully photographed) color plates – maybe just 5% of the recipes illustrated. From a health standpoint our understanding of saturated fats and their artery clogging proclivities is far better than it was when these tomes were written, so I would advise cutting back on processed Andouille sausage, and replacing margarine (ugh!), butter and vegetable oil with extra virgin olive oil, in the interest of heart health. Also the recipes frustratingly use volume (cups) instead of weight, though that is easily fixed with the knowledge that 1 cup = 8 ounces.

Tip: Unless you like your books splattered with food, juices and oils, no cookbook should ever see the inside of a kitchen. Take a picture with your cell phone, print and annotate the result and it’s off to the stove.

A word of warning: A few of the recipes call for warming up your pan until it is smoking hot, adding the fish or chicken and then immediately adding butter. That’s a prescription for fire. In a large, professional kitchen with large, vented hoods that’s likely not an issue. However, in the tighter confines of a home kitchen you could be looking at a visit from the fire brigade. I avoid those recipes.

*Soak coined jalapeno peppers in dry/white vermouth for a week, strain and add vodka. Liquid fire.

Sigma 20-200mm zoom lens on the Leica SL2-S – Part II

Some snaps.

For an index of all Leica-related articles click here.

Part I is here.

These were taken mostly at full aperture unless otherwise noted, with AutoISO. Absent minor correction of leaning verticals the images are pretty much SOOC. Spot AF-s was used (locking the focus with a first pressure on the shutter release, then recomposing) as I do not trust area focus options. At 200mmm, even with the slow maximum aperture of f/6.3, depth-of-field is very shallow. For ISOs of 3,200 and above I used LRc’s excellent ‘Denoise’ feature. It takes out digital noise without destroying definition. All originals were taken on DNG files, converted in LRc to JPG for this journal:




Autofocus on the little boy is spot on. 200mm, ISO 12,500.
Click the image for a larger version.

My previous experience with the Sigma 35mm f/1.4 Art lens suggested that Sigma’s quality control was less than stellar, with the autofocus being significantly off. Sigma makes the UD11 dock but it appears that it does not permit correction of autofocus errors, serving only to adjust manual focus collar rotation speed. It also allows downloading of the latest firmware but you can do that without a dock. Anyway, it appears I have lucked out as far as focus accuracy goes. The Leica SL2-S does not have a function to correct for lens autofocus errors, so that’s not a solution if your lens’s focus is off.



No evidence of chromatic aberration, 113mm, ISO 400.



Corner to corner resolution. 45mm, ISO 6,400.




The Declaration of Independence.
Stopped down to f/8. Outstanding resolution – check the big version.
65mm, ISO 6,400.
Click the image for a larger version.




Stopped down to f/4.8.
20mm, ISO 2,200.
Click the image for a larger version.

The outstanding in-camera correction of distortion and vignetting is very much visible here. Flare – check the light globe far right – is very well controlled.



Another example of fine flare control. 78mm, ISO 3,200.




Stopped down to f/8.
20mm, ISO 12,500.
Click the image for a larger version.

Performance at 20mm is exemplary, with little resolution gain from stopping down. There is no issue with using the lens wide open when it comes to rendering of details. This is a very high dynamic range image, testing the SL2-S’s (Sony BSI?) 24mp sensor to the limit. It acquits itself well, even though a 2019 design.




150mm, ISO 280.
Click the image for a larger version.

Check the detail rendering of the mesh behind the Hal Davis signage.




33mm, ISO 100.
Click the image for a larger version.

Obligatory brick wall. Again, the correction of distortion and vignetting is remarkable. Corner definition is all you could ask for.




200mm, ISO 200.
Click the image for a larger version.

There’s no need to stop down for best resolution at 200mm, as the above proves.

A few more snaps to round out this piece. The outdoors were very smoky from forest fires and an occasional touch on LRc’s Contrast slider was called for, though the lens delivers good contrast otherwise.




95mm, ISO 560.
Click the image for a larger version.

Check the definition of the lettering at the lower right in the large version.



123mm, ISO 140.



31mm, ISO 1,600.



71mm, ISO 1,600.



191mm, ISO 100.



A touch of Saul Leiter. 91mm, ISO 200.

Conclusion: A fine ‘walk about’ lens, small, light with no excuses needed for performance at any aperture. This one optic easily replaces two zooms or half a dozen primes in your kit bag. As the last image in Part I discloses the 20-200mm Sigma is also a capable macro lens. A fine optical accomplishment by the designers in Aizu, Japan. Sharing the tasks of aberration correction between the hardware team (coma, spherical and chromatic aberrations) and the software team (distortion and vignetting) is surely the wave of the future. Kudos, also, to Leica for updating the firmware for the SL2-S to accommodate the Sigma zoom. The lens was introduced in mid-2025, after the SL2-S was discontinued (January 2025).