This mechanism fits into a container with an O-ring seal round the top and the lens in a separate sealed barrel fits into a bayonet mount on the ... The principle and mechanism were exactly the same, but an f2-5, 35 mm Nikkor lens was fitted.
|Title||:||A manual of underwater photography|
|Author||:||T. Glover, G. E. Harwood, J. N. Lythgoe|