We can 100% confirm that using the stock lens mount from a Hero 3+ Black camera will install and work in a Hero 3 Black camera. You can purchase the Hero 3+ Black stock lens mount on our site here.
What is the point of this you may ask?
The threading on the Hero 3 Black stock lens mount has (literally) 2-3 less threads closer to the front of the camera than the lens mounts on the Hero 3+ Black camera. So that means lenses that have a long back focal length (such as the super popular 5.4mm f/2.5 non-distorted 10MP lens) are not able to be threaded into the Hero 3 Black lens mount. Placing a lens like the 5.4mm into the stock Hero 3 Black lens mount can only achieve focus by lifting it slightly out of the lens mount. By installing the Hero 3+ Black lens mount you gain those necessary few threads to thread the lens in and achieve focus.
As a side note, we are working on fabricating our own lower cost CNC’d lens mount with threading throughout the entire lens barrel so that all sorts of additional lenses can be used on the Hero 3/3+ cameras. Stay tuned…
Hero 3+ Black Lens Mount:
Hero 3 Black Lens Mount:
(LEFT) = Hero 3 Black
(RIGHT) = Hero 3+ Black
We’ve been selling the RibCage modified GoPro Hero 3+ Black cameras and DIY RibCage kits for some time now. This modification changes your GoPro into a lens-accepting beast, allowing you to adapt any m12, C and CS lens onto the GoPro Hero 3 Black cameras. Doing so provides expanded zoom, focus, and f stop functionality. The m12 Adapter/Extender allows you to adapt many more m12 lenses than the basic m12 threading included with the kit and due to the included focus ring we recommend getting one for each m12 lens you buy. You can check out our huge list of m12, C & CS megapixel lenses for all the different options.
Here are some videos we’ve put together using the Ribcage GoPro: