Ignoring the "unofficial" leaked photos (which show an Oppo Find 7-like chassis with what looks like MIUI/Color OS screenshots photoshopped onto some of them), OnePlus has continued its trend of controlled "official" leaks. This time the leak is focused on the camera (you see what I did there?). As a reminder, the rear camera is a 13MP shooter with a f/2.0 aperture Sony Exmor RS sensor. The camera was put through its paces in a 4K video test and in a comparison of still photos in various conditions with the Oppo Find 5 and a Nikon D3100 DSLR camera.

In terms of the 4K video sample, the results are shown below in a YouTube video - I don't have any kind of 4K display to view the full-res video on, so I'll have to take their word for it when it comes to quality. I will say that the detail is sufficient at 1080p that you can make out an ant moving down a leaf at the 0:41 mark (I have the particular leaf to watch for circled in the screenshot below the embedded video).


4K video screenshot
As for the still shots, I'm no expert on photography, so I'll leave the detailed analysis to the experts. The comparison was between 3 cameras of roughly similar megapixel count (13MP for the OnePlus One and the Oppo Find 5), though the Nikon D3100 DSLR was set to 12.1MP. In case you're wondering why no comparison was made to the newer Find 7 camera, its camera is virtually the same as that on the OnePlus One so there would be almost no point in comparing the two unless you compared the software/calibration aspects. Here is the spec list of each camera as described in the OnePlus One forum post:​

  • One Plus One - 13Mp F/2.0
  • Oppo Find 5 - 13MP F/2.2
  • Nikon D3100 DSLR 12.1Mp DSLR 18/55mm 1:3.5-5.6G
Coming from a simple end-user's point of view, I can tell that the level of detail in the pictures is similar in all three cameras. The main difference I noticed in soft-to-bright lighting conditions is that (with a couple of exceptions) the range goes from the vivid/warm colors of the OnePlus One photos through the slightly less vivid colors of the Oppo Find 5 photos and ends with the comparatively washed-out look of the Nikon D3100 DSLR photos.​
In low and extremely low lighting conditions the OnePlus One seemed slightly outclassed by the DSLR but both cameras easily outclassed that on the Oppo Find 5 (you could barely make out any detail on the grainy Find 5 samples in extremely low lighting).​

As I said, I'm nobody's photography expert, so I can't speak how scientifically accurate the testing was. Taking the images at face value, though, it looks like the OnePlus One more than holds its own against the Find 5 and older Nikon D3100 DSLR in soft-to-bright lighting conditions, while the DSLR slightly beats it out in darker conditions.

Sources: OnePlus One forum (photo comparison), OnePlus One forum (4K video sample) via Phandroid