Voigtlander 50mm f/2 APO-Lanthar Aperture Series: Night Lights Along Bike Path (Sony A7R IV)
This series from f/2 through f/8 shows sharpness across the field at distance along with sunstar behavior with checks on ghosting flare as well.
Voigtlander 50mm f/2 APO-Lanthar Aperture Series: Night Lights Along Bike Path
Includes image up to full camera resolution from f/2 through f/8.

f8 @ 30.0 sec electronic shutter, ISO 100; 2020-02-14 18:21:45
Sony A7R IV + Voigtlander FE APO-Lanthar 50mm f/2 Aspherical RAW: Enhance Details, LACA corrected
Sony A7R IV + Voigtlander FE APO-Lanthar 50mm f/2 Aspherical RAW: Enhance Details, LACA corrected
[low-res image for bot]