gnirtS
First Officer
Flight distance : 5712575 ft
United Kingdom
Offline
|
Andrejs Posted at 2018-7-30 22:50
Zoom lenses not used to "zoom" to subject (at least by professionals), but for changing focal length and angle of view! Just try to shoot your face with 35mm lens and 100mm
Also with "zoom" you can get nice blur background. So, zoom not used to get subject closer, but change view angle etc.
Maybe for larger camera and so on but that isn't going to really apply to a mavic 2 with a fixed, wide aperture lens and 24-48mm 35 equivalent length.
A few assumptions. f/2.8 aperture (mavic one was 2.2, air is 2.8. doesnt make much difference) and same sensor size as Mavic 1 (again doesnt make a huge difference if they change it slightly).
Taking into account the crop factor its going to give roughly 8.5mm focal length of the lens fully zoomed in.
Banging those numbers into dofmaster and you see that ultimately once you hit 6m or so subject distance, everything from 2.5m to infinity is going to be in focus so no blurred background.
Bokeh depends on aperture (mavic likely fixed, wide but fixed), sensor size, focal length and subject distance combined with subject to background distance.
For standard portrait blur shots you generally need a wide aperture, a long focal length (way over what a mavic will do), a very close distance to subject and a much bigger distance from the subject to its background. Thats not really practical or a common drone flying scenario.
You'll get a *little* perspective changing going 24-48 (in reality 4.5 to 8.5mm actual range) but not a huge amount, again you ideally need your subject close.
So i suspect the best use of a mavic zoom is actually going to be to get shots of things you cant get close to either because you annoy it or the separation safety laws prohibit it. Will mean less cropping needed.
Some assumptions made on aperture and sensor size for those calculations but they wont be far out from whats released. |
|