Crucial is zoom for good photos. When the zoom, a distinction is made between the optical and digital zoom. While working the lens system with an optical zoom inside the lens by the lens is moved so that a motif is zoomed in or pressed in the distance, the zooming in and out is tried with the digital zoom in digital way. The digital camera, optical zoom is important, so that distant objects can be photographed better and easier. Using a lens with lens works the optical zoom and can shoot thus far distant images and motifs with a high quality. When the digital zoom only pixels will be added to the image and the image quality can possibly suffer. Standard for digital cameras nowadays is a 4 x zoom. The more expensive models have zoom but also a 10 x or 12 x.
There are models of digital cameras, which feature an optical and a digital zoom. Here, the optical zoom to a jump, when the exhausted digital zoom the image is still too far away. Is combined with the optical digital zoom, just more pixels are added. But because the digital image consists of already million pixels, the extra pixels, add the picture appear out of focus can. The zoom process, an optical zoom is not electronically controlled visually. Zoom digital zoom, however, is the so-called rights”. When the optical zoom, the problem can arise that more is zoomed, less light to pass through and thus the image is too little exposed. With the digital zoom, this can not happen while, yet this is still not preferred because the image data just converted. Many manufacturers tempt consumers so that they have incorporated the optical and digital zoom, however, is better than digital zoom to use the optical.
Information about the structure of magnetic fields of great importance are handheld device for direct visualization of magnetic fields in many application areas of investigation of magnetic materials. These magnetic fields can but so far only classical magnetic field sensors such as Hall and Magnetoresistive Sensors gather themselves. A new magnetooptisches process offers the Matesy GmbH, 2008 from the research facility INNOVENT e.V. has emerged. MagView family, which includes a portable testing device and a camera-based analysis system, it is possible to visualize magnetic fields without going through a scanning measurement directly to the human eye. This opens up possibilities for applications in the areas of quality assurance and the scattered field analysis of magnetic materials. A high-sensitivity magnetooptischer sensor, forms the core of the MagViews of both in his figure behavior (analog/binary), customizable as well in his range to different measurement tasks is. Depending on the type of integrated sensor, magnetic fields can be analyzed by 0.01 up to 150 kA/m.
To meet different requirements of geometry, MagView in sensor sizes is offered up to 2.5 cm in diameter. Additional information at Joint Chiefs of Staff supports this article. MagView is equipped with LED technology, so that between a version with white light and a variant with monochromatic light (590 nm) can be selected. Detailed structure analyses are possible with two light sources, where the white light source produces a plastic visualization and the monochromatic light is used for the quantitative analysis of scattered field. The handling of the device is very easy. The sensor is kept for an analysis of the material to be examined. The evaluation of polarity, the homogeneity, the distribution of the magnetic material and the magnetization properties takes place purely visually. Digital Imaging for the scattered field analysis are made possible by the integrated CCD-camera. The Visual information can be accurately evaluated thus by image processing software and archived.