Steve's Digicams Forums

Steve's Digicams Forums (
-   General Discussion (
-   -   What is the standard tripod mount? (

Suesy Apr 30, 2015 6:24 AM

What is the standard tripod mount?
Hi all.

I guess all modern digital cameras and DSLR's have the same size screw-in tripod mount hole but what are its dimensions?

I have found a good olde tripod for sale but the guy says it has a 0.5cm screw thread...isn't that the older standard?


TCav Apr 30, 2015 6:48 AM

From Wikipedia:

Per ISO 1222:2010, the current tripod screw thread standard for attaching the camera calls for a 1/4-20 UNC or 3/8-16 UNC thread. 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.
There have been minor variations over the years, but they were mainly the use of the British Whitworth type thread instead of the UNC, which, while not identical, are compatible for the purpose.

I don't know of any 0.5 cm screw thread on a tripod, and I doubt that, if it were true, you'd be able to use it.

VTphotog Apr 30, 2015 1:18 PM

Just to get a bit technical: 0.5cm is not an actual thread size. Machine screw thread sizes are given in mm x pitch (also in mm)
Sounds like the guy is guessing about the size. (1/4 inch is 6.35mm)

Edit: There may have been European cameras using a 5mm thread, but since at least the 1960's, everything from the US and Japan have been made to the 1/4-20 (for smaller cameras) standard. And that was before the UK converted to metric.

BBbuilder467 Apr 30, 2015 1:28 PM

If you just used a ruler to measure visually, 1/4" would look like 5mm. 3/8" would look more like 9mm.

That's probably how he's distinguishing one from the other.

TCav Apr 30, 2015 4:44 PM

Ask him what kinds of cameras it fits. If it fits modern cameras, it's 1/4-20 UNC.

All times are GMT -5. The time now is 2:02 AM.