On 2014-01-13 10:30, Randy Little wrote: > Most lens will have mark for the rear nodal point. Its the rear nodal > that you want to be your rotation point. I know about focal plane marks on camera bodies, and IR focus marks on lenses, but I've never heard of nodal point markings on lenses. The first two have fairly standard representations; is that also try of the nodal point marking, and if so what does it look like? I don't recall any mysterious markings on any of my lenses.... -- David Dyer-Bennet, dd-b@xxxxxxxx; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info Nikon DSLR photo list: http://d4scussion.com