You might think the dual cameras in Apple’s iPhone 7 Plus aren’t that complicated. It’s like having two regular cameras slung over your shoulder, one for wide-angle shots, the other for zooming in on subjects farther away, right?
Wrong.
Apple’s approach uses both cameras at the same time. The iPhone 7 Plus blends its two cameras into one, drawing on each camera’s virtues and sidestepping their weaknesses to try to get the best image possible.
That lets the telephoto lens sharpen some wider-angle photos. But it also can mean limits you might not expect — like the effective loss of that second camera when you’re shooting in dim conditions.
With screen sizes settling down and processor speeds leveling out, it’s harder these days to convince customers that the latest phone is a big step up. But one area that continues to draw interest is a phone’s camera because it captures your most personal moments and lets you share them with friends and family. By throwing away some traditional aspects of digital camera design, Apple’s dual-camera approach shows there’s still room for significant improvements when it comes to photography.
Apple devoted 15 minutes to the iPhone 7 and 7 Plus cameras — a full eighth of its two-hour event — to launch the new iPhone and the Apple Watch Series 2. Phil Schiller, Apple’s senior vice president of worldwide marketing, didn’t hold back: “This is the best camera ever made in any smartphone.”
Take a look at CNET’s photo comparisons of the iPhone 7 Plus, iPhone 6S Plus and Samsung Galaxy S7 to make up your own mind.
When your iPhone 7 Plus acts like an iPhone 7
The iPhone 7 and 7 Plus each come with a wide-angle camera, the equivalent of a 28mm focal length on a traditional SLR camera. The iPhone 7 Plus adds the longer 56mm equivalent camera to magnify more distant subjects and to zoom into a face for a portrait. (The iPhone image sensors are identically sized but much smaller than those of a full-frame SLR; their lenses’ actual focal lengths are 3.3mm and 6.6mm.)
In good light, the 56mm camera on the iPhone 7 Plus​ (left) beats the 2X digital magnification on the iPhone 7’s 28mm camera.Enlarge Image
In good light, the 56mm camera on the iPhone 7 Plus (right) beats the 2x digital magnification on the iPhone 7’s 28mm camera (left). This image has been cropped and expanded to triple-size to better show the differences.
Ian Sherr/CNET
The telephoto option is nice for anyone frustrated by years of phones that offer no alternative to wide-angle. There’s digital zoom, but it uses software to expand the central portion of the image, which is why it often looks grainy or blurry.
Here’s the rub: The iPhone 7 Plus’ 56mm-equivalent telephoto lens doesn’t always kick in.
In many circumstances, the telephoto lens takes over when you’ve set the phone to shoot at 2x magnification. But CNET testing shows that for zoomed-in shots in dim conditions, the iPhone 7 skips the telephoto camera and uses the wide-angle camera instead. In other words, beyond 2x zoom, you might get the same shot you would with the iPhone 7 and its single wide-angle camera. The phone makes up the extra pixels with digital zoom, not optical zoom. Via cnet
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