![]() Assuming the optics can resolve such small details, the Tele camera sees a 1.9X improvement in resolution over the wide camera. The pixel size on the wide camera is 1.9 μm, while on the tele cameras, it’s 1.0 μm. Apart from focal length, the resolution depends on pixel size and the quality of the optics. To understand the 3X claim, we need to look at the difference in the camera's resolution because the main objective of adding a telephoto camera is to “get closer” to the subject. If the focal length of the tele camera is 8.8mm and only 1.6 longer than the wide camera, why is the tele considered a 3X tele? This new constraint still limits the sensor size but allows the lens to have a longer focal length, which is exactly what you find on some flagship Android devices. The arrangement removes constraints on the length but adds new ones to the height of the sensor as it is no longer parallel to the screen. On the iPhone 13 Pro, the sensor is 4x3 mm, so the actual focal length is 1.5 mm with an aperture 0.83 mm in diameter. The ultra-wide smartphone camera usually has a focal length equivalent to 13 mm and an aperture of F/1.8. Its sensor is 4x3 mm, so the lens’s actual focal length is 8.8 mm, and the aperture is 3.1 mm in diameter. The tele camera has a focal length equivalent to 77 mm and an aperture of F/2.8. Its sensor is 7.6x5.7 mm, so the lens's actual focal length is 5.5 mm, making the aperture 3.6 mm in diameter. It usually has a focal length equivalent to 26 mm and a large aperture, such as F/1.5. We picked the iPhone 13 Pro as our reference. Let's see how these constraints affect the different cameras in smartphones. ![]() Cost - the more lens elements, the more you pay. All cameras have certain constraints in common, but some are more specific to smartphone cameras:įocal length - the property of the lens that dictates the camera’s field of view: the total area the camera can “see,” depending on the sensorĪperture or F-number - indicates the size of the lens's aperture and, therefore, the amount of light that can pass through it and, among other things, defines the depth of field: the distance that is sharp around your focus point.ĭimensions - the smartphone’s lack of physical depth poses several challenges to camera design. This article explains the differences between these cameras and reveals their limitations. Each of its cameras has very different specifications. These days, smartphones come with multiple cameras, each serving a different purpose and capturing a different field of view.
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