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An electronic viewfinder (EVF) is a camera viewfinder where the image captured by the lens is displayed on a small screen (usually LCD or OLED) which the photographer can look through when composing their shot. [1] It differs from a live preview screen in being smaller and shaded from ambient light, and may also use less power.
Mobile phones have a display device, some of which are also touch screens. The screen size varies greatly by model and is usually specified either as width and height in pixels or the diagonal measured in inches. Some phones have more than one display, for example the Kyocera Echo, an Android smartphone with a dual 3.5 inch
The following is a comparison of high-definition smartphone displays, containing information about their specific screen technology, resolution, size and pixel density.It is divided into three categories, containing smartphones with 720p, 1080p and 1440p displays.
They have larger sensors and lenses than those in a camera phone but lack a viewfinder, display, and most controls. They can be mounted to an Android or iOS phone or tablet and use its display and controls. Lens-style cameras include: Sony SmartShot QX series, announced and released in mid-2013.
A distinction between different camera software is the method used to store high frame rate video footage, with more recent phones [a] retaining both the image sensor's original output frame rate and audio, while earlier phones do not record audio and stretch the video so it can be played back slowly at default speed.
Display Camera Video Front-facing camera Fingerprint scanner; Huawei Nova 13i Qualcomm Snapdragon 680 4G Octa-Core, (4x2.8 GHz Cortex-A73 + 4x1.9 GHz Cortex-A53) Adreno 610 128/256 GB None 8 GB Android EMUI 14.2 163.3 mm × 74.7 mm × 8.4 mm 199 g 5000 mAh USB-C, 40 W 6.7" 1080 x 2388, 90 Hz IPS 108 MP (wide) + 2 MP (depth) 1080p@30 fps
As an example, one old QVGA OLED display consumes 0.3 watts while showing white text on a black background, but more than 0.7 watts showing black text on a white background, while an LCD may consume only a constant 0.35 watts regardless of what is being shown on screen. A new FHD+ or WQHD+ display will consume much more.
On most modern flip phones, there is usually a small display on the back of the screen to indicate the time and any incoming calls/text messages whilst the phone is closed. Motorola was once owner of a trademark for the term flip phone , [ 16 ] but the term flip phone has become genericized and used more frequently than clamshell in colloquial ...