Help


[permalink] [id link]
+
Page "Zoom lens" ¶ 1
from Wikipedia
Edit
Promote Demote Fragment Fix

Some Related Sentences

zoom and lens
His right arm, both legs and the left eye are replaced by " bionic " implants that enhance his strength, speed and vision far above human norms: he can run at speeds of, and his eye has a 20: 1 zoom lens ( In the novel it is a camera ) and infrared capabilities while his limbs all have the equivalent power of a bulldozer.
A more typical consumer zoom will have a variable maximum relative aperture, since it is harder and more expensive to keep the maximum relative aperture proportional to focal length at long focal lengths ; 3. 5 to 5. 6 is an example of a common variable aperture range in a consumer zoom lens.
For example, a camera with a 1 / 1. 8 " sensor has a 5. 0x field of view crop, and so a hypothetical 5-50mm zoom lens produces images that look similar ( again the differences mentioned above are important ) to those produced by a 35mm film camera with a 25 – 250mm lens, while being much more compact than such a lens for a 35mm camera since the imaging circle is much smaller.
This size-change mechanism was inspired by the zoom lens you might find on a camera, and any change in size can be described by a trade-off in the efficiency of processing.
The only true zoom lens for rangefinder cameras is the Contax G2 Carl Zeiss 35 – 70mm Vario-Sonnar T * Lens with built-in zoom viewfinder.
This is accomplished by a complex series of adjusting lenses similar to a zoom camera lens.
The H2F is compatible with all of the H lenses, including the HC28, and the new HC 35-90mm zoom lens.
Zoom burst is a technique which entails the variation of the focal length of a zoom lens during a longer exposure.
* Zoomar introduces the first professional zoom lens for television cameras.
The effect is achieved by using the setting of a zoom lens to adjust the angle of view ( often referred to as field of view or FOV ) while the camera dollies ( or moves ) towards or away from the subject in such a way as to keep the subject the same size in the frame throughout.
The zoom lens assembly of the Canon Digital IXUS | Canon Elph
In a prime lens this is easy, but in a zoom there is always a compromise.
One of Canon's most popular wide-angle lenses-17-40 mm f / 4 L retrofocus zoom lens.
A 150 – 500mm telephoto zoom lens
* Stanford University CS 178 interactive Flash applet showing how a telephoto zoom lens works.
A good quality camera might come with a variety of interchangeable, focusable lenses or possibly a single zoom lens.
Nikkor 28-200 mm zoom lens, extended to 200 mm at left and collapsed to 28 mm focal length at right

zoom and is
Images and other outputs of modelling are normally referred to as being " fractals " even if they do not have strictly fractal characteristics, such as when it is possible to zoom into a region of the fractal image that does not exhibit any fractal properties.
However, Mapquest zoom level 1 is a suitable map to see the location between Peru and New Zealand.
This situation will commonly occur whenever a widescreen TV is set to display full images without stretching ( often called the zoom setting ) on images with an aspect ratio of 1. 78: 1 or less.
* The zoom feature is also known as " A poor man's dolly.
** specify zoom level 0 – 9: add "& zoom = zoom level " ( note that the zoom level in MapQuest's hoverbox have numbers which are one more, the range is 1 – 10 )
Using the zoom function seems to contribute to motion sickness as well as zooming is not a normal function of the eye.
I started using the zoom, I used new camera movements, new frames which were not reverential, but almost documentary an almost classical severity with the moments that are almost Godardian, for example in the two trials of Christ shot like " cinema verite "... The Point is that ... I, a non-believer, was telling the story through the eyesof a believer.
The dolly zoom is an unsettling in-camera effect that appears to undermine normal visual perception.
Thus, during the zoom, there is a continuous perspective distortion, the most directly noticeable feature being that the background appears to change size relative to the subject.
The visual appearance for the viewer is that either the background suddenly grows in size and detail and overwhelms the foreground, or the foreground becomes immense and dominates its previous setting, depending on which way the dolly zoom is executed.

zoom and mechanical
It had a mechanical zoom ring and electronic focus ring on the lens barrel, it used an electronic viewfinder ( EVF ) showing 100 per cent of the lens view, it added many high level features such as a histogram and made the cameras TTL-compatible with Minolta's final generation of flashes for film SLRs.
The Ruvi also featured mechanical linkages for zoom optics.

zoom and elements
* 28-300 / 4. 0-6. 3 ( 1. 6 ), 17 elements in 15 groups, 77 mm filter, 1. 9 m close focus, multicoated lenses, 570 g, f / 16 min, 1: 5. 5 magnification, Ø82 × 122 mm, sliding zoom
* 24-200 / 3. 5-5. 6 AT-X 242 AF, 15 elements in 13 groups including two aspherical and two SD glass, multi-layer coatings, internal focusing, rotary zoom, 6 blades diaphragm, f / 22 min, 80 cm close focus, 1: 5. 97 magnification, 72 mm filter, ø81. 8 × 89 mm, 690 g
* 80-400 / 4. 5-5. 6 AT-X840 AF D, 16 elements in 10 groups including one SD glass, f / 32 min, multi-layer coatings, 250 cm close focus, 1: 5. 4 magnification, rotary zoom, 8 diaphragm blades, 72 mm filters, ø77. 2 × 136. 5, 1020 g, replacing the previous AT-X 840 AF-II
However, square or rectangular lens hoods should not be used with zoom lenses whose front elements rotate as the focal length is changed, as the hood will rotate as well, blocking the angle of view.

zoom and for
Anti-aliased rendering, combined with Adobe applications ability to zoom in to read small type, further combined with the now open PostScript Type 1 font format, provided the impetus for an explosion in font design, and desktop publishing of newspapers and magazines.
* spherical lenses, usually adapted and re-mounted Leica full-frame rangefinder camera lenses ; SOM Berthiot made a special zoom just for VistaVision applications, but it saw very little use
* Multimap – shows geographic coordinates and allows a direct link to a map for a given location and with a given zoom level ; shows all railways from scale 1: 500k, all railway stations from 1: 50k
Models also have to match the magnification for both eyes throughout the zoom range and hold collimation to avoid eye strain and fatigue.
Certain scenes or even types of filmmaking, however, may require the use of zooms for speed or ease of use, as well as shots involving a zoom move.
The Vario-Tessar name has been used by Zeiss for various zoom lenses including that of the digital still cameras Sony Cyber-shot DSC-P100, DSC-P200 and DSC-w330.
On the contrary, the Censor Board of India for Indian cinema brought some limitations with respect to portrayal of vulgarity which included restrictions on visuals like zoom shots of the navel, vulgar kissing of the navel and the erotic squeezing of the navel and waist.
Laptops today feature multitouch touchpads that can sense in some cases up to five fingers simultaneously, providing more options for input, such as the ability to bring up the context menu by tapping two fingers, dragging two fingers for scrolling, or gestures for zoom in / out or rotate.
Objects present inside a zoomed page can in turn be zoomed themselves to reveal further detail, allowing for recursive nesting and an arbitrary level of zoom.
Most compact zoom cameras use the zoom functionality for telephoto work where one details in on a remote subject.
It has a high resolution lens with 5x zoom ( 7. 1-35. 6 mm )-equals ( 28 – 140 mm ) in 35 mm film format-and an aperture of 2. 4 for wide angle and 3. 5 for telephoto.
Image: C-8080WZ tele. JPG | Olympus C-8080WZ with extended zoom lens for telephoto
In particular, the Four-Thirds system allows for the development of impressive f / 2. 0 zoom lenses, which would be prohibitively heavy, expensive, and difficult to design for larger sensor formats.

0.249 seconds.