Nokia is awarded with a patent which might solve the issue with the cellphone cameras. They are either great at taking pictures in daylight or in low-light with flash in Nokia 808 PureView or take great pictures in low-light with no flash in Nokia Lumia 920. The setting of aperture is the reason of the problems faced by these cameras.
Nokia Lumia 920, with its large aperture size of f/2.0 takes great low-light photos without a flash. Nokia 808 PureView takes outstanding daylight pictures with f/2.4 aperture on its phone camera. If a cellphone is made to adjust the aperture possibly an OEM like Nokia could bring a handset with a camera that can adjust a landscape shot to a larger aperture for low light or portrait picture or from low aperture for daylight.
According to Nokia, "Small aperture with high f- number increases the sharpness of distant objects, or in other words increases depth-of-field, which means more elements of a picture, from foreground to background, become sharply focused. This can create a distinct sense of depth to a photograph, drawing the viewer into the picture. It is well-known that small apertures are used especially for most landscape photographs. The large aperture produces shallow depth-of-field, which means the area of sharp focus in the picture will be small. It is well known that small apertures are used especially for isolating the subject of the picture while throwing the background and other distracting elements out of focus. Some useful applications of large apertures include portraits and wildlife close-ups."
The technology includes two electrodes with an electrical circuit that applies voltage to the electrodes.
At the end, the thought is to use the current to squeeze an electroactive center unit that can adjust the aperture. As per Nokia, they will use its patent to make previous art versions of the technology less complex, easier to manufacture and consume less power.
Source : phonearena