That's pretty cool considering it actually transforms from the camera into Optimus Prime. More interesting than a lens mug.
Just gotta wonder though, in real life, it would either make Optimus Prime super tiny and easy for Megatron to crush, or it would be a huge R5 camera/lens combo! If the latter, what would be the MP of the sensor (or GP, or PP)? The lens elements could also benefit from multicoating.
In Japan only, you can get a Decepticon version Reflector, which for those that know the cartoon, was a SLR camera that transforms into three robots. This version is only one robot.
According to the website, it's 80% scale of the real R5. The RF lens is 24-105 f4 and can be detached.
Maybe they should've made the Decepticon a Sony or Nikon.
The lens elements could also benefit from multicoating.