What is the focal length of the iPhone 7's camera when accounting for video cropping?
On the iPhone 6, I have found the video crop with stabilization activated to be 1.1x tighter than a still photo with stabilizer deactivated. The field of view goes from 63.9° to 58.1°, diagonally. The effective focal length changes from 4.2mm (29.3mm on full frame DSLR) to 4.6mm (32.3mm on full frame DSLR).
If you overlay a still image from the video footage and align it to a photo from the same position, you can see this crop in action.
The full specs of the iPhone 7 camera are:
Primary camera
- 12 MP
- f/1.8
- 28mm
- phase detection autofocus
- OIS
- quad-LED (dual tone) flash
- 1/3" sensor size
- geo-tagging
- simultaneous 4K video and 8MP image recording
- touch focus
- face/smile detection
- HDR (photo/panorama)
- Video: 2160p@30fps or 1080p@30/60/120fps or 720p@240fps
Secondary camera
- 7 MP
- f/2.2
- 32mm
- face detection
- HDR
- panorama
- Video: 1080p@30fps or 720p@240fps
Let me know if you need more info.
I just found this page which seems to completely answer our focal length questions: http://www.anandtech.com/show/10685/the-iphone-7-and-iphone-7-plus-review/6
That webpage says for Apple iPhone 7 (I LEFT OUT THE iPHONE 7 PLUS INFO):
FRONT CAMERA
Resolution: 7MP
Sensor: Sony Exmor RS (1.0 µm, 1/?")
Focal Length: 2.87mm (32mm eff)
Max Aperture: F/2.2
REAR CAMERA
Resolution: 12MP
Sensor: Sony Exmor RS (1.22 µm, 1/3")
Focal Length: 4mm (28mm eff) 8mm (56mm eff)
Max Aperture: F/1.8