Here are not one but TWO affordable frames for 360 camera rigs.
Until now, frames for rigs have been costly because they had a limited market and were being produced in small quantities. For example, Freedom 360, which was the first 360 rig for GoPros, costs around $675 (not including the cost of the cameras). But now, frames for rigs are being mass produced, bringing down their cost dramatically. Here are a couple of examples:
SELENS SE-GPP6-WP WATERPROOF RIG
This is an all-aluminum 360 camera rig for GoPro cameras. Because the GoPros remain in their housing, the GoPros are waterproof. However, please note that if you use this underwater, refraction will decrease the field of view significantly, so you won’t be able to stitch a 360 video that was recorded underwater.
The rig features screws with slots on the side so that you can use a screwdriver from many angles.
The Selens rig was designed for GoPro cameras, but because it uses the common GoPro style mount, it MIGHT be possible to use it with other action cameras that have a GoPro style mount and have a field of view that is equal or wider than the field of view for a GoPro.
One Amazon reviewer said that the rig worked on an all-Hero5 rig. Another user on Amazon said that the number 6 camera position was wrong but if the frame is reassembled and the bracket is moved, it will work correctly.
SELENS SE-GPP6 COMPACT RIG
The SE-GPP6 is another all-aluminum rig that also uses six GoPro cameras, in a very compact configuration. The smaller distance between lenses means it is easier to stitch.
According to the specs, it is also compatible with Yi action camera, but I doubt it. GoPros are attached to the mount using a groove on the side of the GoPro Hero, and Yi action cameras don’t have a similar groove.
Please note the cost of either rig does not include the cameras nor the stitching software, which is also pricey. Autopano Video Pro is probably one of the most, if not the most, popular option for stitching 360 videos, but it costs $749. Mistika VR is a software that can stitch rigs in this configuration and costs EUR50 per month. The lower upfront cost could make it more affordable for many shooters.