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You either consulted Erwin Put’s Leica Compendium or you waited for the invention of the internet, Youtube, and the evolution of influencers. 😉

At this point, the APO Summicron line is a known quantity as far as handling is concerned. Optically, it’s the best 21mm that Leica can make while hitting a $5500 USD price point and it will probably be the highest performing 21mm on the market for many years. With that said, there are many other high quality comparable options on the market since Leica announced their roadmap in 2018 such as the Sigma 20mm f/1.4 DG DN and Sony 20mm f/1.4 GM (yes, not L-mount compatible). Looking at the MTFs (and accounting for the different lp/mm), the Sigma 20 f/1.4 DG DN will give the 21 SL APO a serious run for its money. I’d be most curious about how the two stack up side-by-side. The Sigma gets you probably 95-100% of the image quality at less than 17% of the price of the Leica. To put things in to perspective, people often pay more than 17% for tipping at a restaurant in North America! Funny coincidence. The Sigma 20/1.4 DG DN’s magnification ratio of 1:6.1 is also coincidentally the same ratio as the price between the Sigma and Leica.

The reviewers are probably busy reviewing the M11-P. 🙂

My biggest complaint about the Sigma 14-24 DG DN is that it can flare/ghost in bright sunny environments which is hard to avoid when it has such a wide field of view. I’m wondering if: The 14-24 SL has different internal lens mount than the Sigma DG DN version which could potentially help with improved flare/ghosting The 14-24 SLversion with Leica’s coating has better flare/ghosting resistance compared to Sigma’s DG DN version

I recall @robb had posted some pre-released MTF charts for the 21 APO a while back. Can’t seem to find that post anymore but I’m curious how it differs from the official MTF released today.

What video setting are you shooting that’s giving you issues? For example, are you shooting *.mov or *.mp4 containers? 8K, 4K, C4K? LongGOP, All-i? Normal colour or Log? 4:2:0 or 4:2:2? What app are you trying to watch the videos in? Photos, DaVinci Resolve, Final Cut, or some other third-party app?

It’s a geothermal area in Kerlingarfjöll, in the highlands of Iceland.

I can’t speak for Jpegs but for DNGs, in terms of the WB temperature value for AWB on the Q3, they do tend to run in the 7000K range even when I expect it to be in the 5500-6000K range for daylight which is what I see on the SL2-S. With that said, as long as the actual final image looks good, it doesn’t bother me much. As for magenta tint, it seems to be part of Leica’s color signature in recent years. I see it in the SL2-S and M11 images as well.

Looking back a bit, I noticed this issue came up part way through a trip 2 weeks ago where things were fine and then they weren’t and I didn’t update FW on the Q3. The only thing that change was that FOTOs app was updated to v4.0.4 on iOS. I think this is likely the problem so hopefully Leica can fix this in an FOTOs app update. The problem seems specific to Q3 and doesn’t seem to be a problem on the SL2-S since I was using both cameras together and only saw the problem on the the Q3 images.

I noticed the same thing. Seems like time update via GPS was broken in the latest FW and/or iOS FOTOs app.