BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="henry link" data-source="post: 1864122" data-attributes="member: 6806">You are right about that. There is no difference in DOF among binoculars of the same magnification, but the optics myth that DOF varies has taken on such a vigorous life that I think it will never go away.Brock,I think  your memory of the objective spacing of the Octarem and Fujinon 6x30 is a little off. There is nothing special about the Octarem compared to other 50mm Porros. It's less than some. The Fujinon is about the same as the Nikon 8x30 EII and many other 30mm Porros, but much more than any roof. With the IPD set to 65mm the Octarem spacing is 140mm, the Fuji is 123mm.</blockquote>