Not quite true though...........
I think most are UNC and Whitworth is close enough to fit.
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- Start date
Not quite true though...........
I think most are UNC and Whitworth is close enough to fit.
Oh Dear ,I stand corrected-- but it used to be!!
Screw thread
Per ISO 1222:2010,[1] the current tripod screw thread standard for attaching the camera calls for a 1/4-20 UNC[2] or 3/8-16 UNC thread.[3] Most consumer cameras are fitted with 1/4-20 UNC threads. Larger, professional cameras and lenses may be fitted with 3/8-16 UNC threads, plus a removable 1/4-20 UNC adapter, allowing them to be mounted on a tripod using either standard.
Historically, The Royal Photographic Society recommended the thread standard for attaching older cameras to tripods was 3/16-24 [(British Standard Whitworth)BSW] 3/16 inch nominal diameter, 24 threads per inch, or 1/4-20 BSW[4] for smaller cameras and 3/8-16 BSW[5] for larger cameras and pan/tilt heads. In this application the BSW and UNC thread profiles are similar enough that one can mount a modern camera on a legacy tripod and vice versa. The UNC threads are 60 degree angle and flattened, whereas the BSW are 55 degree angle and rounded crest. However, at least one English manufacturer uses No.1 B.A. (British Association) for its tripod mount thread.
Stan
This is the point. Trying to get BSF threaded bar (or even better threaded inserts etc) to make a few things to see if its viable is difficult. As far as I know its used all over the world since the day dot...
