I feel really small ...
Canon EOS1200D with Leica MR-Telyt-R 1:8/500mm
Taking into account the crop factor of 1.6 for this APS-C camera, this focal length corresponds to 800 mm on a full format camera. It is very tricky to focus and requires lots of light because I have to shoot handheld at 1/1000 s or faster .... or I should use a tripod. A mirror lens cannot be stopped up nor down; the f-stop is fixed at 8. Concerning the light that reaches the sensor, it's closer to f/11 because of the blockage due to the secondary mirror.
Airbus A380-800, shot at Rhein-Main Airport, Frankfurt, Germany
I feel really small ...
Canon EOS1200D with Leica MR-Telyt-R 1:8/500mm
Taking into account the crop factor of 1.6 for this APS-C camera, this focal length corresponds to 800 mm on a full format camera. It is very tricky to focus and requires lots of light because I have to shoot handheld at 1/1000 s or faster .... or I should use a tripod. A mirror lens cannot be stopped up nor down; the f-stop is fixed at 8. Concerning the light that reaches the sensor, it's closer to f/11 because of the blockage due to the secondary mirror.
Airbus A380-800, shot at Rhein-Main Airport, Frankfurt, Germany