I took a walk 10 days after Christmas with my Z6 and 25mm 2.8 Carl Zeiss Distagon ZF.2. The Distagon is a very close focusing wide angle lens. Email questions: jlvphoto@yahoo.com
Which Nikon body did you use? I was confused for a while because of the ZF in the name. Were you use a Nikon Z? But you specified F mount. And this lens came out before the Z cameras. So I'm interested in your body choice.
Thank you for sharing! This lens has become rare for Canon mount, but I managed to snag one recently. Regarding the soft corners at closer distances, I have read that this is just due to field curvature. So the flat chart test doesn’t tell the whole story. It could even be an advantage in some shooting situations.