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OnePlus 7 Pro's "3x optical zoom" is not quite a zoom – it's a crop



There has been a lot of talk about the cameras on the new OnePlus 7 Pro, and it hasn't been good either. OnePlus 7 Pro has a "3x optical zoom", but is it really? According to a user at Reddit, not so much, no. OnePlus is not really in line with this claim, but there are some approaches. One can argue that they "lie because of failure".

Then OnePlus 7 Pro has three cameras on the back.

The first is the main 48-megapixel Sony IMX586 sensor with optical image stabilization and an opening of f / 1

.6. Official specifications on the OnePlus site do not specify the focal length (or 35mm equivalence), but some digging and math would suggest it is about 26mm. The other is the telephone lens, promoted as a 78 mm equivalent focal length of 8 megapixels. And the third is a 16 megapixel ultra wide that offers a 117 ° point of view with an opening of f / 2.2. It's about the corresponding field of view on a 17 mm lens on a full-frame DSLR.

However, the other 3x optical zoom is a notch. Reddit user ImKuya did some experiments and with the help of other Redditors he found that the other camera is actually a Samsung S5K3M5 13 megapixel (4160 x 3160 resolution) camera with a lens that gives more of a 2.2x zoom to 48- megapixel main sensor, which offers a field of view corresponding to about a 57mm lens on a full-screen camera.

What the camera seems to do is shoot the 13 megapixel image and then crop it to 8 megapixels in order to achieve the requested "3x zoom". ImKuya tested this in a video illustrating how the camera shows a noticeable switch when you hit the 3x zoom, but when photographing portrait mode with the camera, it's more like a 2.2x zoom. And portrait mode images are actually 13 megapixels with the entire sensor.

It's a bit like saying that throwing a full-frame Nikon DSLR into DX mode for a 1.5x crop gives a "1.5x zoom". Certainly, zooming and cropping is technically the same when it comes to field of view (I ignore relative depth of field for this example), but is it a legitimate requirement? Especially if there is a big decline in the resolution? When it comes to DSLR, assuming you use a full frame lens (because the phone in the phone obviously covers the entire sensor), you can just as well just shoot the entire frame and reap in posts, rather than having the camera crop for you.

Sure, technically they are not lying, but in official statements, OnePlus does not call a "3x optical zoom" in the statement, but a "3x zoom without digital zoom or detail loss". They also confirm that the portrait mode uses the entire sensor.

OnePlus 7 Pro has 3x zoom without digital zoom or loss of detail. The camera has two main purposes: 3x zoom and portrait mode shooting. It will change the field of view depending on the camera mode. With 3x zoom, the camera delivers the advertised lossless 8 megapixel images. – OnePlus

But the OnePlus 7 Pro specifications on the OnePlus website definitely say it's an optical zoom. 19659003]

So it seems that OnePlus fudges the numbers to make the phone sound more impressive than it really is. The 3×8 megapixel zoom is really a 2.2x 13 megapixel camera, but they do not allow you to access the full sensor resolution in straight up photo mode. You can only use it if you are in portrait mode or shoot 4K video, which is not ideal. You don't always have to use portrait mode when it doesn't fit the shot, and you don't need to shoot still images from heavily compressed videos.

If you want the "3x optical zoom" in photo mode, it will be a harvest.

This is not the first time OnePlus has encountered such problems with their smartphone cameras either. They had a similar controversy over the alleged 2X zoom in OnePlus 5, it actually turned out to be a combination of optical and digital zoom.

It's pretty funny that the campaign images for OnePlus 7 Pro have "Never Settle" written over the screen, but they expect you to settle for their marketing nonsense .

[via Android Authority]


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