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Thoughts on LG G5 wide-angle camera

Started Apr 9, 2016 | Discussions
Doug Pardee
Doug Pardee Veteran Member • Posts: 9,920
Thoughts on LG G5 wide-angle camera

So far I haven't been able to find out any details on the wide-angle camera on the LG G5. It's straight 4K/UHD 3840x2160 pixels, and LG claims a 135-degree angle of view. Pictures taken with it report a focal length of 1.53 mm.

If I back-calculate from that 1.53 mm focal length, a 135-degree angle of view translates into a 7.39 mm projected image. Assuming that LG's angle of view is measured on the diagonal (something they seem to like to do), that would give a sensor size of 6.44x3.62 mm. That's larger than the 1/2.6" main sensor, although the increased light-gathering of the larger sensor can't quite compensate for the f/2.4 lens versus with the main sensor's f/1.8. The sensor size also gives a pixel size of about 1.7 microns, compared with the 1.12 micron pixel size of the main and front cameras.

I've seen reports that the wide-angle camera has OIS, but experimentation suggests otherwise, as does the iFixit teardown. Not that OIS is as important with such a wide angle.

For whatever the above information is worth.

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WJMWJM Regular Member • Posts: 161
Re: Thoughts on LG G5 wide-angle camera

Doug Pardee wrote:

So far I haven't been able to find out any details on the wide-angle camera on the LG G5. It's straight 4K/UHD 3840x2160 pixels, and LG claims a 135-degree angle of view. Pictures taken with it report a focal length of 1.53 mm.

If I back-calculate from that 1.53 mm focal length, a 135-degree angle of view translates into a 7.39 mm projected image. Assuming that LG's angle of view is measured on the diagonal (something they seem to like to do), that would give a sensor size of 6.44x3.62 mm. That's larger than the 1/2.6" main sensor, although the increased light-gathering of the larger sensor can't quite compensate for the f/2.4 lens versus with the main sensor's f/1.8. The sensor size also gives a pixel size of about 1.7 microns, compared with the 1.12 micron pixel size of the main and front cameras.

I've seen reports that the wide-angle camera has OIS, but experimentation suggests otherwise, as does the iFixit teardown. Not that OIS is as important with such a wide angle.

For whatever the above information is worth.

Doug, good to see at least one person noticed this wonderfull wide-angle news....:))

(seems it has pronounced fisheye/barrel-distortion in the horizontal axle, but that is nothing software could not solve (preferably inboard/Android

Started the below thread today, on the Casio forum; the Casio Tryx being the only comparable combination of compact & wide-angle thusfar, since many years:

http://www.dpreview.com/forums/post/57630454

That said: your attempt to re-calculated angle of view into focal length and/or sensor-size is a rather tricky one.

I once tried the same, owning said Tryx, with 21mm-equivalent wide-angle, 4.0mm optics, and a Samsung WB210, 21mm-equivalent, 3,8mm optics. Both 1/2.3" sensor.

(written few postings on that topic in the past, many moons ago, never got much feedback....;((

http://www.dpreview.com/forums/post/40548096

PS: see also my general wish for a combination of Casio's HDR-Art, Panasonic's/Olymus's infinite panorama, and wide-angle (lens will still affect the vertical angle in a panorama, so more is still better).

http://www.dpreview.com/articles/2817145452/panasonic-announces-lumix-dmc-fz70-60x-optical-zoom?comment=8852496912

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