Published in Guide to Leica is a triple-aperture focus series for the Voigtlander Nokton 50mm f/1.1 from f/1.1 - f/11.
This 11-frame X 3 aperture series aids in visualization:
- Bokeh and depth of field.
- The general feel of f/1.1 vs f/2.8 vs f/5.6.
- Lens aberrations, particularly color aberrations.
- Image rendition, the “drawing” style.
- Breathing and the change in image magnification with focus.