Stopping down a bit can significantly improve image quality. The lens tends to be generally less sharp, with a little vignetting and more longitudinal (axial) chromatic aberration at this setting. When a lens is set to the maximum aperture it is called wide open. The maximum aperture of many zoom lenses varies as the focal length is adjusted. A lens with a large maximum aperture is called a fast lens (because it makes short exposure times possible). The maximum aperture of a lens determines its usefulness in low-light situations. A aperture of f/1.4 is twice as bright and an aperture of f/2.8 is only half as bright.Ĭhanging the aperture not only affects the exposure but also the depth of field (the amount in front and behind the focus distance that is acceptably sharp). A 50mm lens with an aperture diameter of 25mm has an aperture of f/2. The f-number is the ratio of the lens focal length and the diameter of the aperture. Making the aperture smaller is called stopping down. The units of aperture setting are called stops and given an f-number. With some lenses, this is done by turning a ring around the lens, but in many others the aperture is controlled by a dial on the camera.
is called a lens.) In almost all smartphone cameras the aperture size is fixed, but in most other cameras the aperture may be adjusted. (The whole part of the camera with glass lens, iris, etc. The aperture is the hole in the " iris" behind the glass lens that lets the light through. No-fly-zones for manned aircraft apply to UAV's as well.Ī large (f/2.8) and a small (f/16) aperture
DARKSTORM VIEWER 3.2 REGISTRATION
Even though commonly available camera drones are not heavier than 2 kg (4.4 lb), a registration is required in many countries. Please note that the use of unmanned aerial vehicles, including camera drones, is restricted by your country's laws. It can also take videos of excellent quality. The built-in camera usually has technical properties similar to a good point-and-shoot camera and can produce both JPG and raw format. A drone can hover very stable, which is important for taking pictures from a short distance. Drone or Unmanned aerial vehicle (UAV): Multicopters with built-in camera, commonly known as camera drones, are currently the easiest and cheapest way to take aerial photos and/or videos.Commercial balloon flights are also very expensive. Hot air balloon: Good angle of view and stability, but the precise route is depending on wind direction, so it is not always possible to photograph a specific motif.Airplane: It is possible to take useful photos from an airplane, but in most cases the altitude is much too high and the angle of view very limited.However, helicopters are not very stable in the air and can cause camera shake. Helicopter: Often used for aerial photography, including commercial photos.Aerial photography can be the only way to get useful photos of some motifs.Įxamples of aircrafts that can be used for taking aerial photos: It is a common way to photograph large landscapes or cityscapes, but also single objects such as buildings or bridges. Nonetheless, taking good quality pictures is possible, especially under good light conditions.Īerial photos are photos taken from any kind of aircraft. Electronic first curtain shutter (EFCS)ĭrone cameras have relatively small sensor, so they do not yet reach the resolution, the noise performance, and the dynamic range of DSLR cameras.Please try and write in basic English: most users are not Native English speakers, nor are they photographers.Ībbreviations of Photography Terms.
DARKSTORM VIEWER 3.2 HOW TO
0 kommentar(er)
