XS (EVS)

XS is the studio production server of the Belgian company EVS Broadcast Equipment.

It has been inspired from the XT3 server but can be controlled by dedicated controllers from EVS for the studio environment: Xsense, IPDirector, Xscreen, Insio or by non-EVS controllers such as automation systems, linear or hybrid editors, switchers and controllers through API or standard protocols.

Designed to replace VTRs, the server allows incoming feeds to be recorded, quickly enriched by metadata and played out or instantly streamed or transferred to post-production.

The server benefits from loop recording and allows to record, control and play media. It has from 2 to 6 channels SD/HD and 6-channel 3D/1080p (3G or dual link) and offers the same features in a 3D environment. It supports a several formats and codec, with specific codecs for News environment.

It is widely used in News environments and sometimes in Sports

References

External links

XS on EVS Official WebSite

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/XS_(EVS)

EVS

EVS may refer to:

European Voluntary Service

EVS Broadcast Equipment

Exposure Value Scale, an exposure system proposed by Friedrich Deckel and used on cameras in the 1950s and 1960s

EVS, the Electric Vehicle Symposium

EVS - Enhanced vision system

EVS - EVS Professional Training Institute

EVS - Easton Village Store

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/EVS

APEX system

APEX stands for Additive system of Photographic EXposure, which was proposed in the 1960 ASA standard for monochrome film speed, ASA PH2.5-1960, as a means of simplifying exposure computation.

Exposure equation

Until the late 1960s, cameras did not have built-in exposure meters, and many photographers did not have external exposure meters. Consequently, it often was necessary to calculate exposure from lighting conditions. The relationship of recommended photographic exposure to a scene's average luminance is given by the camera exposure equation

where

A

is the relative aperture (f-number)

T

is the exposure time ("shutter speed") in seconds

B

is the average scene luminance ("brightness")

S_x

is the ASA arithmetic film speed

K

is the reflected-light meter calibration constant

Use of the symbol $B$ for luminance reflects photographic industry practice at the time of ASA PH2.5-1960; current SI practice prefers the symbol $L$ . German sources typically used $k$ for the relative aperture. Many authors now use $N$ and $t$ for relative aperture and exposure time.