Get Zeiss Otus 28mm f/1.4 APO-Distagon at B&H Photo.
The Zeiss Otus 28mm f/1.4 APO-Distagon focus to a reproduction ratio of 1:6.25. At such a close distance, nearly all wide angle lenses decline in performance, and most exhibit problematic focus shift and all sorts of veiling aberrations and color correction defects.
This aperture series from f/1.4 through f/13 explores the optical performance for the Otus 28/1.4 at its MOD (minimum object distance).
Includes images up to 24 megapixels as well as large crops, from f/1.4 through f/13.
It’s great fun to see how the image “develops” across the apertures.
As an aside, I’ve now concluded that the late 2015 iMac 5K represents the best viewing experience of any display ever produced. The 14.7-megapixel screen delivers an image whose fine detail looks better than an 4 X 5 'chrome' I ever saw: larger, more luminous and absolutely crisp (with good images). I look forward to an iMac 6K or iMac 8K.
Please note that when using a HiDPI or Retina display, images should be viewed at the inverse of the scaling ratio or they will look blurred, e.g., 50% if the display is set at the usual 2:1 scaling delivers actual pixels to the full resolution (otherwise, at 100% scaling, you’d be looking at 200%, which looks blurred no matter how sharp the image). This site should set the scaling by default, but there may be circumstances in which the wrong scaling is acquired; use the controls in the “gallery” page to change if necessary.