Another example of what the 55 mm f/1.2 CRT Nikkor-O can deliver. Given it was made for narrowband phosphors of the CRT display its ability to cope with broad-spectrum daylight is actually quite a surprise.
The lens was designed for a narrow range of magnification, around 1:4 to 1:5, and needs a short-register camera system if one wants to push it further towards infinity. However, due to its specially designed field curvature, it will show a massive fall-off of sharpness towards the periphery of the frame for any subject outside the near range.
This capture of a Wood Anemone (Anemone nemorosa) was acquired with a Nikon D3X at 1:3.5 magnification and f/1.2. The perfect circles of confusion is a hallmark of this industrial lens.