Something like this (up to 400mm focal length telephoto), plus the aircraft almost directly above ground around 300 meters as you say and the shooter allowed to be within 200 meters of the radius would yield a photo that we have just seen.
Something like this (up to 400mm focal length telephoto), plus the aircraft almost directly above ground around 300 meters as you say and the shooter allowed to be within 200 meters of the radius would yield a photo that we have just seen.
Autofocus is totally useless in armature lenses being too slow. Once focus is lost, it runs crazy to refocus without knowing where to start its effort.
Focus adjustment is still needed, unlike some may suggest infinite focus due to the distance. In a telephoto, the infinite focal distance is much further away than a wider lens.
The only way works is a preset focal length close to infinite with a fast brain and fingers to quickly adjust the ring.
The FOV is also extremely narrow that the aircraft can fly out in split of second. When I do it, I have both my eyes open, one looking at the aircraft through the view finder, the other eye tracking aircraft. It is very tough to the brain.
Something like this (up to 400mm focal length telephoto), plus the aircraft almost directly above ground around 300 meters as you say and the shooter allowed to be within 200 meters of the radius would yield a photo that we have just seen.
Autofocus is totally useless in armature lenses being too slow. Once focus is lost, it runs crazy to refocus without knowing where to start its effort.
Focus adjustment is still needed, unlike some may suggest infinite focus due to the distance. In a telephoto, the infinite focal distance is much further away than a wider lens.
The only way works is a preset focal length close to infinite with a fast brain and fingers to quickly adjust the ring.
The FOV is also extremely narrow that the aircraft can fly out in split of second. When I do it, I have both my eyes open, one looking at the aircraft through the view finder, the other eye tracking aircraft. It is very tough to the brain.
SAC, like any other firm, needs its own PR and marketing, especially if they’re trying to get customers to bite on their products, so naturally we’re going to see some self initiated photography once in a while.
Yes, no need to have the Canon red ring white lens (the top end), I myself use a mid range 300mm (480mm equivalent on a Canon 20D). I use manual focus and let the AI do the exposure thing (nothing matter in the broad daylight).
