We now have a street price pre-order available on the Canon EOS Ra — it’s available for $2399, from authorized Canon USA dealers. A limited quantity is available for ship-out on launch day (Thursday, December 5th).
The camera has a modified infrared-cutting filter in front of the sensor, which lets through about 4x as much hydrogen alpha rays (at the 656nm wavelength) vs. a regular EOS R camera. This allows for more contrast when photographing the deep red infrared rays emitted by nebulae.