Canon EOS Ra

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The EOS Ra is a version of Canon's first full-frame mirrorless camera, the EOS R, with some modifications to configure it for use in astrophotography. The infra-red filter is changed to block less of the deep-red light emitted from de-excitations in hydrogen atoms, characteristic of some red stars and nebulae, allowing more vivid pictures of them to be made.[1] The display also allows a greater degree of magnification in live view, up to 30x, compared to the standard camera's 10x. The camera is otherwise like the EOS R.


  1. EOS Ra at the Canon Camera Museum. EOS Ra leaflet describing differences from the EOS R, and recommending some settings.