by Michael Baister | Jul 17, 2026 | adobe lightroom, adobe photoshop, analogue photography, commercial photography, commercial photography newcastle, instagram, michael baister photography, nikon cameras, nikon lenses, northeast commercial photography, sunderland commercial photography
Now this is a strange lens in this day and age! To what exactly does the “GN” in “GN Nikon 45mm” refer? Younger people may be unfamiliar with the acronym. “Guide number” (GN) is an indicator for measuring flash performance. Modern...
