Phone bodies are simply too small and thin to house the kind of miniaturized electronics and optics needed for true zoom photography, short of outlandish designs like the Samsung Galaxy S4 Zoom. Phone cameras are getting amazing capabilities, but one thing that they’re not very good at is zoom. But in general terms, high-end phones with double lenses and advanced image processing can perform better than their single-lens counterparts.Įxamples: iPhone 7 Plus, 8 Plus, and X Samsung Galaxy Note 8, Galaxy S9, Huawei Honor 8, LG V20, and V30 The “Double Zoom Option” Approach The “bokeh” portrait effect is a good example: most phone cameras are simply artificially blurring part of the image to achieve the same effect as a low depth of field on a regular camera lens.

Now, image processing does a lot of other stuff too, some of which isn’t actually helping the image so much as messing with it.

That’s how HDR photography works: photographers take multiple images at different levels of exposure to highlight different colorful portions of the image, and then combine them for “High Dynamic Range.” Phone camera processing is merely automating this sort of process and applying it near-instantly to give users better-looking photos, especially in low light. This results in a single image that’s brighter, sharper, and clearer than either camera could achieve on its own.Ĭombining multiple images isn’t a new technique. But with specialized image processing, the software upon which digital cameras run, you can combine the strengths of both lenses and image processors while removing the weaknesses. With a conventional camera, taking two photos with two different lenses isn’t all that useful-you’ll just end up with two mediocre images. The Galaxy S9 uses identical sensors, but different lenses on its two cameras. A longer lens can “blow up” images from far away subjects, but lets in less light. A low-aperture, wide-angle lens is great for gathering sharp detail up close, but not so great when your subject is in motion.

Different camera modules and lenses are better at different tasks.

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