The new R7 and a speedbooster

geffy

EOS 90D
Jun 24, 2019
121
79
According to the instructions the speedbooster was not for stills with the introduction of the R7 is this now an item or is there a technical issue at work here rather than the lack of a suitable host, ef lenses on an rf mount that is cropped. An extra stop of light at the cost of the 1.6 focal multiplier.