This is a brief article, because I've already written about the low-light performance of the Lumix S5. You should read that article for all the details. But it was a dark and rainy day, so I figured I'd do another quick comparison of ISO settings, more for my own benefit... but why not share!
L-mount lens system (summary table)
The L-Mount Alliance was formed by Panasonic, Leica, and Sigma in September 2018 to create a new standard for mirrorless cameras. To date no fewer than 84 lenses have been released for this platform. To save you repeating many hours of research, I now share my complete list of full-frame L-mount lenses.
Normal lens comparison
This article compares three "normal" prime lenses, each being classics of the film-era: a fast Pentax 50mm f/1.2, the distinctive Pentax 43mm Limited f/1.9, and the Contax Carl Zeiss Planar 50 f/1.4. I'll shoot some photos and describe the characteristics of the lenses themselves. This will not be a formal test, but nonetheless I will adopt a reasonable methodology. No doubt photographs of human models would be more appealing, but I don't have any handy!