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The view camera is a type of camera first developed in the era of the Daguerreotype and still in use today, though with many refinements. It comprises a flexible bellows which forms a light-tight seal between two adjustable standards, one of which holds a lens, and the other a viewfinder or a photographic film holder.

The bellows is a flexible, accordion-pleated box, which encloses the space between the lens and film, and has the ability to flex to accommodate the movements of the standards.

The front standard is a board at the front of the camera which holds the lens and, usually, a shutter.

At the other end of the bellows, the rear standard is a frame which holds a ground glass, used for focusing and composing the image before exposure, which is replaced by a holder containing the light-sensitive film, plate, or image sensor for exposure. The front and rear standards can move in various ways relative to each other, unlike most other types of camera, giving control over focus, depth of field and perspective.

The camera must have some means of support, usually provision for mounting it on a tripod.

Chambre-monorail-MPP.picture

Chambre-monorail-MPP.picture


Types of view camera

There are several types of view camera for different purposes and allowing different degrees of movement and portability. They include:

Sanderson-Hand-Camera.picture

Sanderson-Hand-Camera.picture

A Sanderson ‘Hand’ camera dating from circa 1899

  • Monorail camera – This is the most common type of studio view camera, with the front and rear standards being mounted to a single rail that is fixed to a camera support. This design allows the greatest range of movements and flexibility, with both front and rear standards able to tilt, shift, rise, fall and swing in similar proportion. These are generally made of metal with leather or synthetic bellows, and are difficult to pack for travel. Sinar and Toyo are popular manufacturers of monorail view camera systems. ARCA-Swiss produces monorail cameras for field use in addition to models for the more conventional studio applications. Many manufacturers also offer monorail extensions, which permit the front or rear standards to move further away from each other, allowing for focus on very close objects (macrophotography).
  • Field camera – These have the front and rear standard mounted on sliding rails fixed to a hinged flat bed that is fixed to a camera support (tripod, etc.). These cameras are usually made of wood, or sometimes lightweight and strong composites such as carbon fiber. When the bellows are fully retracted the flat bed can be folded up, reducing the camera to a relatively small, light, and portable box. The price for this portability is that the standards are not as mobile or as adjustable as those of a monorail design; the rear standard, in particular, may be fixed and offer no movement. These large format but transportable cameras are popular with landscape photographers. Tachihara and Wisner are examples of modern field cameras at opposite ends of the price scale.
    • Extremely large field cameras using 11×14 film and larger, or panoramic film sizes such as 4×10 or 8×20, are sometimes referred to as banquet cameras, and were used to photograph large, posed groups of people to mark an occasion, such as a banquet or a wedding.
    • Studio and salon cameras are similar to field cameras, but do not fold up for portability.
  • Press and technical cameras are true view cameras, as almost all of them have a ground glass integral to the film-holder mechanism that allows critical focus and full use of the sometimes limited movements. More expensive examples had a wide array of movements, as well as focusing and compositing aids like rangefinders and viewfinders. They are most often made of metal, designed to fold up quickly for portability, used by press photographers before and during the second world war.
  • A more modern development is the highly portable Sinar arTec view camera which fails to fit within any of the above criteria and was designed primarily to be used by architectural photographers. It has the novel ability to take panoramic stitched images by means of built in step and repeat mechanism.

View cameras use large format sheet film, using one sheet per photograph. Standard sizes in inches are: 4×5, 5×7, 4×10, 5×12, 8×10, 11×14, 7×17, 8×20, 12×20, and 20×24. (It is usual to list the short side first in the Americas, and the long side in many other countries, thus 4×5 is the same as 5×4). A similar, but not identical, range of metric sizes is used in many countries; thus 9×12 cm is similar to, but not interchangeable with, 4×5 inches. The most widely used format is 4×5, followed by 8×10.

A few rollfilm cameras have movements that make them as versatile as a sheet film view camera. Rollfilm and instant film backs are available to use in place of a sheetfilm holder on a single-film camera.

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happy-new-year-2011.picture

happy-new-year-2011.picture

My Wish For You

Happiness deep down within.
Serenity with each sunrise.
Success in each facet of your life.
Family beside you.
Close and caring friends.
Health, inside you.
Love that never ends.
Special memories of all the yesterdays.
A bright today with much to be thankful for.
A path that leads to beautiful tomorrows.
Dreams that do their best to come true.
Appreciation of all the wonderful things about you.

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Astronauts installed a Modern camera on the Hubble Space Telescope in the first of a series of spacewalks to upgrade the aging instrument.

In the seven-hour, 20-minute long spacewalk astronauts substituted Hubble’s camera with a more innovative model. The Wide Field Planetary Camera 3 will allow astronomers to see deeper into space and to accept images in the three

Areas of the light spectrum – ultraviolet, obvious and near infrared.

The astronauts also substituted a computer that malfunctioned last year. The so-called Science Instrument Command and Data Handling Unit controls the telescope’s science instruments and formats information to be sent back to scientists on Earth.

Other smaller tasks got the Hubble ready for future work. The spacewalkers experienced only a few minor hitches with some tight bolts, pushing the spacewalk longest than its designed six-and-a-half hours.

“We acquired the Hubble and gave Hubble a hug, but in conventional Hubble manner it threw us a few curves,” a Hubble veteran on his third activate to the telescope, said after completing the act.

It is the first of five designed spacewalks in as a lot of days to add two Modern instruments, repair two others and substitute other hardware in frequently delicate operations to Hubble.

On Friday, spacewalkers goodwill removes and substitute three pairs of gyroscopes that keep the telescope adjusted and pointed towards areas being analyzed by astronomers.

The crew Wednesday applied the robotic arm on the space shuttle Atlantis to capture Hubble ahead of the work.

Scientists say the upgrades, which United States space agency NASA hopes will extend Hubble’s lifetime until leastwise 2014, will continue to allow clues about the origin and nature of the universe.

Since its launching in 1990, Hubble accepts helped scientists to place the age of the universe at 13.7 billion years, learn that black holes are at the center of most galaxies, monitor planetary formation and discover that the universe are expanding at an ever-faster pace.

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