focal distance वाक्य
उदाहरण वाक्य
मोबाइल
- Flange focal distance is the key specification in determining whether or not a particular type of lens can be adapted to any given camera.
- Electron lenses are designed to act in a manner emulating that of an optical lens, by focusing parallel electrons at some constant focal distance.
- For a thick lens made from spherical surfaces, the focal distance will differ for different rays, and this change is called spherical aberration.
- The VATT's mirror is unusually'fast', f / 1, which means that its focal distance is equal to its diameter.
- The system used a lens mount called "'A-mount "', with a flange focal distance 44.50 mm.
- In addition to the mechanical and electrical interface variations, the flange focal distance from the lens mount to the film or sensor can also be different.
- A lens designed for a small flange focal distance may not be able to focus to infinity when a lens adapter places the sensor too far away.
- Generally, a lens can be easily adapted to a camera body with a smaller flange focal distance by simply adding space between the camera and the lens.
- When attempting to adapt a lens to a camera body with a larger flange focal distance, the adapter must include a secondary lens in order to compensate.
- Conversely, relaxation of the ciliary muscle causes the zonular fibers to become taut, flattening the lens, increasing the focal distance, increasing long range focus.
- This technique requires both a camera capable of calculating the distance information, as well as the lens being capable of communicating the focal distance to the body.
- It has a flange focal distance of only 20mm and a 2 & times; crop factor, halving the field of view compared to the original 24x36mm film frame.
- The MFT system standard specifies the lens mount flange to image sensor plane distance ( flange focal distance ) as 20mm, which is less than half that of typical DSLRs.
- The lighthouse, denoted as 797 ( Internationally recognized as D-2676 ) is equipped with a 3-order leticular dioptric lamp with a focal distance, manufactured in 1927.
- The much shorter flange focal distance enabled by the removal of the mirror allows normal and wide angle lenses to be significantly smaller because they do not have to use strongly retrofocal designs.
- This special flat " pancake " lens was manually focused on the FM3A, but contained a CPU which could communicate focal distance to Nikon's later autofocus ( AF ) camera bodies.
- Flange focal distance is also more likely to be rigorously checked as tastes for wider angle lenses continue to push the envelope, as wider lenses have a much narrower tolerance for lens displacement.
- There was a substitution of the main lamp for dioptic model with 150 mm focal distance, and with 50 watt / 12 volt capacity and supported by batteries charged by photovoltaic solar panels.
- It is possible to physically mount a lens with a short flange focal distance on a camera with a long flange focal distance, but this will make it impossible to achieve infinity focus.
- It is possible to physically mount a lens with a short flange focal distance on a camera with a long flange focal distance, but this will make it impossible to achieve infinity focus.
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