I currently have the nikon 10 to 24 mm lens with the 77mm thread and the 16 to 85 lens which has the 67mm thread Iam using a ikelite 6 inch dome port would anybody know if I could use the + 4 diopter with the 77 mm thread on the 10 to24 lens then use a reducer for the 16 to 85 lens. Ikelite recomends a +2 diopter for the 10 to 24 and a +4 for the 16 to 85 I would like to try using just one diopter thank you in advance for any help