Polarizing sunglasses use a polarizing material such as Polaroid sheets to block horizontally-polarized light, preferentially blocking reflections from horizontal surfaces.

They usually use sheet film, in sizes from 6x9cm ( 2. 4 × 3. 6 ") to 20 × 24 inches ( e. g., the Polaroid 20 × 24 camera ), but the most popular " standard " sizes are 4 × 5 and 8 × 10 inches.

Another feature of many medium format models is the ability to use Polaroid instant film in an interchangeable back.

The most popular types to use self-developing film were formerly made by Polaroid Corporation.

Polaroid cameras can be classified by the type of film they use.

Polaroid Spectra cameras use Polaroid Spectra film which went back to a rectangular format.

* Holga cameras may be fitted with a Polaroid back, allowing use of Polaroid 80 series instant film, or with newer models, 100 series film ( but the image is not centered ).

SX-70 cameras ( integral film, develops automatically, 3. 1 × 3. 1 inch ), 600 cameras ( integral film, develops automatically, 3. 1 × 3. 1 inch ), Spectra / Image / 1200 cameras ( integral film, develops automatically, 3. 6 × 2. 9 inch ), Captiva / Vision ( integral film, for Captiva and Joycam, 4. 4 × 2. 5 inch, 11. 1 × 6. 4 cm ), i-Zone ( integral film, for i-Zone, Tomy Xiao, 1. 5 × 1 inch, 3. 6 cm × 2. 4 cm ), i-Zone200 ( integral film, for i-Zone200 only, 1. 5 × 1 inch, 3. 6 cm × 2. 4 cm ) and Type 330 series AutoFilm ( integral film for use Polaroid CB-33 backs, 3¼ × 4¼ inch ).

She is now known for her use of a Polaroid 20 by 24 inch camera ( one of only 6 in existence ),< ref > According to her web site FAQ,

Polarized 3-D glasses only became practical after the invention of Polaroid plastic sheet polarizers by Edwin Land, who was privately demonstrating their use for projecting and viewing 3-D images in 1934.

Polaroid filters in disposable cardboard frames were typical during the 1950s, but more comfortable plastic frames with somewhat larger filters, considerably more expensive for the theater owner, were also in use.

The durability and practicality of Polaroid makes it the most common type of polarizer in use, for example for sunglasses, photographic filters, and liquid crystal displays.

In that apparently simple shift Porter opened the way to the sensitive use of the camera as an instrument of art as well as a mechanical recording device.

Griffith's film The Birth of a Nation made pioneering use of advanced camera and narrative techniques, and its immense popularity set the stage for the dominance of the feature-length film in the United States.

Upon discovery of the Nazi concentration camps, he ordered camera crews to document evidence of the atrocities in them for use in the Nuremberg Trials.

The use of different camera speeds also appeared around 1900.

Nevertheless, the Griffith style of film-making was still followed in its full idiosyncrasy, with extensive use of side by side spaces and a definite " front " for the camera, in most slapstick comedy.

He experimented with lighting, camera techniques and special effects in order to achieve true integration of dance with film, and was one of the first to use split screens, double images, live action with animation and is credited as the person who made the ballet form commercially acceptable to film audiences.

While Fred Astaire had revolutionized the filming of dance in the 1930s by insisting on full-figure photography of dancers while allowing only a modest degree of camera movement, Kelly freed up the camera, making greater use of space, camera movement, camera angles and editing, creating a partnership between dance movement and camera movement without sacrificing full-figure framing.

Rouben Mamoulian's Dr. Jekyll and Mr. Hyde ( Paramount, 1931 ), remembered for its use of color filters to create Jekyll's transformation before the camera, Michael Curtiz's Mystery of the Wax Museum ( Warner Brothers, 1933 ), and Island of Lost Souls ( Paramount, 1932 ) were all important horror films.

Whale was known for his use of camera movement.

Kirlian photography does not require the use of a camera or a lens because it is a contact print process.

It is possible to use a transparent electrode in place of the high voltage discharge plate, allowing one to capture the resulting corona discharge with a standard camera or a video camera.

She was one of the first filmmakers to use tracking shots in a documentary, placing a camera on rails to follow the athletes ' movement, and she is noted for the slow motion shots included in the film.

Another method is to use a TV camera — using either visible light or infra-red — in order to see the target.

The director can use built-in camera controls, if available.

Russian photographer Sergei Mikhailovich Prokudin-Gorskii made extensive use of this color separation technique, employing a special camera which successively exposed the three color-filtered images on different parts of an oblong plate.

In 1981, Sony unveiled the first consumer camera to use a charge-coupled device for imaging, eliminating the need for film: the Sony Mavica.

Most digital camera image sensors use single-color sensor regions, for example using the Bayer filter pattern, and in the camera industry these are known as pixels just like in the display industry, not subpixels.

A popular use of a tracking shot was in The Avengers when the camera follows each member of the team for a short while during the final battle in New York.

He was silent a moment, thinking he could use a man this time of year, and if the girl could cook, it would give him more time in the meadows, but he knew nothing about the couple.

The code, which had probably something to do with sex or some other interest, Nicolas was determined to find out and put to use.

As she was rather tired this evening, her simple `` Thank you for the use of your bath '' -- when she sat down opposite him -- spoken in a low voice, came across with coolnesses of intelligence and control.

Steele apparently professed his sentiments in this book too openly and honestly for his own good, since the government was soon to use it as evidence against him in his trial before the House.

The outstanding example was in Garibaldi And The Thousand, where he made use of unpublished papers of Lord John Russell and English consular materials to reveal the motives which led the British government to permit Garibaldi to cross the Straits of Messina.

Modern warfare was born in this campaign -- periscopes, camouflage, booby traps, land mines, extended order, trench raids, foxholes, armored cars, night attacks, flares, sharpshooters in trees, interlaced vines and treetops, which were the forerunners of barbed wire, trip wires to thwart a cavalry charge, which presaged the mine trap, and the general use of anesthetics.

The use of map coordinates was begun when the senior officers began to select tactical points by designating a spot as `` near the letter o in the word mountain ''.

Without a precise knowledge of Germanic philology, however, it is debatable whether their use was not more often a source of confusion and error than anything else.

A credulousness, a distaste for documentation, an uncritical reliance on contemporary accounts, and a proneness to assume a theory as true before adequate proof was provided were all evidences of his failure to comprehend the use of the scientific method or to evaluate the responsibilities of the historian to his reading public.

It was the use of the supernatural that kept them in business.

It may be thought unfortunate that he was called on entirely by accident to perform, if again we may trust the opening of the oratio, for it marks the beginning for us of his use of his peculiar form of witty word play that even in this Latin banter has in it the unmistakable element of viciousness and an almost sadistic delight in verbally tormenting an adversary.

The narrator is an Alsatian serving with the French Army, and he has the same name ( Berger ) that Malraux himself was later to use in the Resistance ; ;

It was a sort of poetic justice that at the time of his own demise a new plot to overthrow the Venezuelan government, reportedly involving the use of Dominican arms by former Venezuelan Dictator Marcos Perez Jimenez, has been uncovered and quashed.

He was delighted to learn that the Post Office Department is now going to expand this service to deliver mail from Representatives in Congress to their constituents without the use of stamps, names, addresses or even zone numbers.

At a recent meeting of the Women's Association of the Trumbull Ave. United Presbyterian Church, considerable use was made of material from The Detroit News on the King James version of the New Testament versus the New English Bible.

The weekly loss is partly counterbalanced by 500 arrivals each week from West Germany, but the hard truth, says Crossman, is that `` The closing off of East Berlin without interference from the West and with the use only of East German, as distinct from Russian, troops was a major Communist victory, which dealt West Berlin a deadly, possibly a fatal, blow.

One effect of the spirited give-and-take of these discussions was to focus attention on practical applications and the necessity of being armed with the facts: knowledge of the destructive force of even the tiniest `` tactical '' atomic weapon would have a bearing on judgments as to the advisability of its use -- to defend Berlin, for example ; ;

Eugene offered Harold his car, to use at any time he cared to, and when this offer was not accepted, the armchair creaked.

I use the phrase advisedly because there was something positively indecent about our relationship.

Another example is the recent cancellation of the F-108, a long-range interceptor with a speed three times as great as the speed of sound, which was designed for use against manned bombers in the period of the mid-1960's.

This aircraft, which was planned for initial operational use about 1965, would be complementary to but likewise competitive with the four strategic ballistic missile systems, all of which are scheduled to become available earlier.

Several efforts were made in this direction, and though not all of them survive to this day, the Brown & Sharpe wire gage system was eventually adopted as the American standard and is still in common use today.

Although Mr. Brown was not himself its inventor ( it was a French idea ), it is typical that his intuition first conceived the importance of mass producing this basic tool for general use.

Between that year and the buying out of Mr. Darling's interest in 1892, a large portion of the company's precision tool business was carried out under the name of Darling, Brown & Sharpe, and to this day many old precision tools are in use still bearing that famous trademark.