RDP

RDP may refer to:

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13th Parachute Dragoon Regiment

The 13th Parachute Dragoon Regiment (French: 13e Régiment de Dragons Parachutistes, 13e RDP) is a specialized Airborne Regiment of the French Army. It is one of two regiments in the French Army Special Forces Brigade, which is under the control of the COS (special operations command). The regiment's primary duties are airborne reconnaissance operations.

History

Origins

Marquis de Barbezières raised a dragoon regiment in Languedoc on 4 October 1676. In 1724 the name was changed to dragons de Condé.

Post–World War II

After World War II, the 13e RDP was transformed into a long-range recon unit. During the Cold War, the main mission of the 13e RDP was to provide intelligence for the 1st Army, while each company of the 1st Marine Infantry Parachute Regiment (1er RPIMa) should provide intelligence for one Army Corps.

From July 1957 onwards, it was part of the 10th Parachute Division during the Algerian War.

Since the end of the Cold War, the 1er RPIMa has become a direct-action unit while the 13e RDP specialized in reconnaissance/surveillance operations in hostile environment, gathering intelligence for special operations. In a way they're similar to the role of the US Army Long Range Surveillance Detachment or Long Range Surveillance Company.

Provia

Provia is a brandname for a pair of daylight-balanced color reversal films (slide film) produced by the Japanese film company Fujifilm. It is currently available in one speed, 100/21°, marketed as Fujichrome Provia 100F Professional [RDP III],. An additional speed of 400/27°, marketed as Fujichrome Provia 400X Professional [RXP], was previously available.

Details

Provia 100F [RDP III] was developed to replace Provia 100 [RDP II] and Provia 400X [RXP] was developed to replace Provia 400F [RHP III], improving on colour image storage permanence and colour fading resistance. Provia has less saturated colors and contrast compared to Velvia.

Provia 100F [RDP III] is available in 135 and 120 formats, as well as 100 feet (30 m) rolls and various sheet sizes. Provia 400X was only available in 135 and 120 formats prior to discontinuation.

Both films have the ability to be pushed/pulled from −1/2 stop to +2 stops. Provia is also a favored film for cross processing.

Neither film requires reciprocity compensation between 1/4000 sec and one minute, with Provia 100F [RDP III] able to last up to two minutes. These longer times make the films particularly suitable for multiple exposures.