A
alistair
Guest
First my apologies if I have posted this in the wrong place.
I have been researching but don't see the info I am looking for.
all the info I can find from DJI is = FOV 84° 8.8 mm/24 mm (35 mm format equivalent) f/2.8 - f/11 auto focus at 1 m - ∞
As a long time professional photographer I am used to being able to find info on lenses that I buy or might buy appertaining to the image quality at various aperture openings.
since the Phantom 4 Pro is using a camera with a range of f/2.8 to f/11, and, if the normal lens characteristics apply, I would expect the "sweet spot" to be at f/5.6 or f/8 ,that being the spot where the lens is sharpest from edge to edge.
I would also wonder how much, if any, diffraction there is at f/11?
I have noted on some reviews some comments on lack of sharpness being put down to not being focused on the right place or the subject , but I have not seen any mention of any depth of field effect being the cause by using as wide open aperture as possible.
For example with the focus point at 10 meters away from the camera at f/2.8 you get:-
Depth of fieldTotal: 16.79m (6.83m ~ 23.63m)
In front of subject: 3.77m (22.4%) Behind subject: 13.03m (77.6%) Hyperfocal distance: 19.18m (>9.59m)
but at f/11 you get a DOF of :-
Depth of fieldTotal: ∞m (3.35m ~ ∞m)
In front of subject: 7.25m Behind subject: ∞m Hyperfocal distance: 4.88m (>2.44m)
note the at 2.8 infinity is not in focus but at f/11 it is .
Any way my real question is is there any tested lens data available anywhere?
I have been researching but don't see the info I am looking for.
all the info I can find from DJI is = FOV 84° 8.8 mm/24 mm (35 mm format equivalent) f/2.8 - f/11 auto focus at 1 m - ∞
As a long time professional photographer I am used to being able to find info on lenses that I buy or might buy appertaining to the image quality at various aperture openings.
since the Phantom 4 Pro is using a camera with a range of f/2.8 to f/11, and, if the normal lens characteristics apply, I would expect the "sweet spot" to be at f/5.6 or f/8 ,that being the spot where the lens is sharpest from edge to edge.
I would also wonder how much, if any, diffraction there is at f/11?
I have noted on some reviews some comments on lack of sharpness being put down to not being focused on the right place or the subject , but I have not seen any mention of any depth of field effect being the cause by using as wide open aperture as possible.
For example with the focus point at 10 meters away from the camera at f/2.8 you get:-
Depth of fieldTotal: 16.79m (6.83m ~ 23.63m)
In front of subject: 3.77m (22.4%) Behind subject: 13.03m (77.6%) Hyperfocal distance: 19.18m (>9.59m)
but at f/11 you get a DOF of :-
Depth of fieldTotal: ∞m (3.35m ~ ∞m)
In front of subject: 7.25m Behind subject: ∞m Hyperfocal distance: 4.88m (>2.44m)
note the at 2.8 infinity is not in focus but at f/11 it is .
Any way my real question is is there any tested lens data available anywhere?