To mount a 13mm wide HDZero Nano 90 camera into a frame expecting a 19mm wide camera like the Apex Evo DC5, you can use a 3D printed adapter designed for this purpose. Look for adapters online or in hobbyist communities that bridge the size difference between your camera and frame.

Thanks for answering. I had already found the design and printed it.
But the best solution is to use the adapter that comes in the box. Unfortunately I was too enthusiastic when I did thr unboxing of the HDzero vtx, so I missed it 🤪

it's roughly about 6-7mm

Hey yes the hdzero freestyle vtx will fit, sorry i don't have any pictures of it mounted in the rear. I used m3 double-side tape to mount the vtx.

Thank you. Does it hang out much or would you consider it "safe"?

safe bro but you can run a zip tie too if you want to be extra safe lol

Thank you. Do you find the power and other cables on the side to be a risk hanging outside the quad?