This aperture series assesses the Voigtlander Nokton 21mm f/1.4 Aspherical at night from f/1.4 through f/9, looking for sharpness and control of secondary color and overall image rendition, including sunstars and point spread function.
In diglloyd Mirrorless:
Voigtlander FE Nokton 21mm f/1.4 Aspherical Aperture Series: Rodin Courtyard
Includes images up to full camera resolution from f/1.4 to f/9. Savor the full resolution images by scrolling around, preferably on an iMac 5K or Apple Pro Display XDR.
If you are OK witih manual focus get this lens, right now! (and please use my link). This is the best 21mm f/1.4 I have ever seen, mirrorless or DSLR.
f2 @ 4.0 sec, ISO 50; 2019-07-03 21:30:21[low-res image for bot]
[-37 highlights, LACA corrected, +40 shadows, Enhance Details, push 0.33 stops]
Sony A7R III + Voigtlander FE NOKTON 21mm f/1.4 Aspherical