Category: high definition video cameras

Sony BRC-H700

The Sony BRC-H700 high definition video camera is
designed for a variety of remote acquisition
applications, especially in television production
for recording programs and for use as a weather
or even traffic camera.

The PTZ (Pan Tilt Zoom) camera can display images
onto a large screen in auditoriums, teaching
hospitals, sporting events, trade shows, and even
concerts. This unit is also ideal for distance
learning applications in which clear high definition
images need to be projected onto electronic white
boards during a presentation or other function.

The Sony BRC-H700 also features three 1/3 inch HD
CCDs with 1.07 megapixels, delivers accurate color
reproduction, and is ideal for taking pictures or
videos in low light environments.

The BRC-H700 has a wide pan range of 340 degrees
and a tilt range of 120 degrees. Both the pan
and tilt speeds are variable within the range of
.25 to 60 degrees a second, so the camera can
capture both fast and slow moving objects with
minimal rocking vibration. The camera also
includes a 12X optical auto focus zooming lens,
which allows for a zoom capability of up to 48X
when used in combination with the 4X digital
zoom.

You can also control the BRC-H700 by external
devices which include the optional RM-BR300
remote control via Sony’s VISCA protocol. Local
controls such as PTZ settings and any of the 16
presets can easily be accessed.

The BRC-H700 has a card slot that accepts a
variety of optional interface cards, including
the HD-SDI, SD/SD, i.Link, and even connections
for use with computers.

Other features include an image flip function
for installation flexibility on ceilings or other
flat surfaces and up to 16 presets for operational
ease of use.

()

PPPPP

Major Components

All video cameras contain 3 major components – the
lens, imager, and recorder. The lens gathers and
focuses the light on the imager, which is normally
a charge coupled device (CCD) or CMOS sensor IC.
Finally, the recorder will encode the video signal
into a form that can be stored. Commonly, the optics
and imager are known as the camera section.

The optic lens is the first component in the camera
section’s light path. The optics normally have one
or more the following adjustments:
1. aperture – controls the amount of light
2. zoom – controls the field of view
3. shutter speed – captures continuous motion
In most consumer units, these adjustments are
automatically controlled by the video camera’s
electronics, normally to maintain constant exposure
onto the imager.

The imager is the “eye” of the camera, housing a
photo sensitive device or devices. The imager works
to convert light into an electronic video signal
through an elaborate electronic process. The
camera lens projects an image to the imager surface,
exposing the photo sensitive array to the light.

The light exposure is then converted into an electrical
charge. Towards the end of the timed exposure, the
imager will convert the accumulated charge into a
continuous analog voltage at the imager’s output
terminals.

The third piece, the recorder, is responsible for
writing the video signal to a recording medium,
such as magnetic videotape. The recording function
involves many steps of signal processing, and
historically, the recording process introduced
some distortion and noise to the stored video,
such that the playback of stored signal may not
retain the same detail as the original live feed.

All but the most primitive of video cameras will
also need to have a recorder controlling section
which will allow you to control the camera. You
can also swich the recorder into playback mode
for reviewing your recorded footage.

The image you recorded doesn’t need to be limited
to what appeared in the view finder. For a
documentation of events such as those used by the
police, the fields of view will overlay such
things as the time and date of the recording along
the top and bottom of the image.

As you can probably tell now, a high definition
video camera is very complex indeed. There are
several other parts involved as well, although the
above are the most important. A HD video camera
is very complex in build, making it something
that is more than worth the time it takes to create.

()

PPPPP

High Definition Video

HDTV or high definition television normally refers
to any video system of higher resolution than the
standard definition. The original HD specifications
date back to the early 1980s, when Japan first
experimented with a 1025 line television standard.

Japan presented their parameters at an international
meeting of television engineers in Algiers in 1981
and Japan’s NHK presented their analog HDTV system
at a Swiss conference in 1983. Except for these
early formats, HDTV is digital broadcast and
therefore it’s introduction will sometimes conincide
with the introduction of DTV, or digital television.

The signals for high definition require a high
definition television or a computer monitor in order
to be watched or viewed. High definition video
will normally have an aspect ratio of 16:9. The
aspect ratio of the regular widescreen film that is
shot today is normally 1:85:1 or 2:40:1. The
standard type of television has a 4:3 aspect ratio.

High definition television resolution is 1080 or
720 lines. With the contrast, regular digital
television is 480 lines or 576 lines. The current
quality with DVD is not high definition, although
high definition systems such as HD-DVD and Blu-Ray
are both expected to be and ship later on in 2006.

The most noted feature with high definition video
is the fact that it’s so life like. There is HDTV,
and HD video cameras. High definition is very
popular these days, with television being at the
top of the list.

High definition video cameras are getting just as
popular, as they offer you the chance to capture
memories like never before. HD offers you video
like never before, making you wonder if things are
this good now – just what will video in the future
actually be like?

()

PPPPP

Sony HDW-F900 HD Cine Alta

The Sony HDW-F900 Cine Alta is a ground breaking
digital HD camera that extends both the digital
heitage of the company and it’s unrivalled experience
in the art of imaging. The physical resemblance
of the HDW-900 to the very successful Digital
Betacam is intentional, although there are some
subtle but very relevant changes that help to further
enhance operational familiarity and ease of usage.

Because of the outstanding picture quality and
flexibility, this video camera offers a new and
important alternative to 24 frame film origination
for major television productions and even commercials
as well. The HDW-F900 is already known as the
digital movie camera, ideal for exploring new
horizons in the making of digital movies.

What really separates the HDW-F900 from other
HD video cameras is its ability to capture and
record digital high definition pictures – at 24
progressive frames per second, just like a
conventional film camera.

The moving pictures are digitally imaged in
accordance with the common image format standard,
which will specify a sampling structure of 1920
active pixels horizontally by 1080 active pixels
vertically. What makes the HDW-F900 so exciting
is that along with recording at 24p, it is also
switchable to record at 25p, 30p progressive scan,
and also at 50 or 60 Hz interlaced.

Colorimetry
The HDW-F900 produces picture with amazing color
reproduction accuracy. The Multi Matrix function
will also offer unique possibilities for creating
intervention by allowing selective color
enhancement of alteration. The Multi Matrix will
also allow particular colors to be selected and
the hue changes over a range of 20 degrees.

Contrast rage
The HDW-F900 can handle an amazing contrast
range. For the most demanding of light settings
and scene conditions, a number of useful
operational features are available that allow
image optimization in real time to help capture
the desired mood and setting for a shot.

Soft focus
The soft focus adjustment is extremely convenient
for those who find digital images to be too
shrap and allows cinematic or even film like
images to be created.

Adoptive detail control
This feature allows the image detail enhancement
in the highlight area to look even more natural.

If you’ve been looking for the best high definition
video camera on the market, the Sony HDW-F900 is
it. This camera offers you plenty of features
and options, more than you could ever use if
you aren’t a professional.

For professionals, the HDW-F900 is the way to do
business. The camera offers you everything you
need for professional shoots, taking things to
new levels. When the time comes to get the best
HD video camera on the market – the HDW-F900 is
all you need.

()

PPPPP

Sony HVR-A1E

The Sony HVR-A1E boasts an incredibly small size,
and providing the 180i standard, the camera offers
you a host of advanced features for professional
use. The HVR-A1E uses technology such as CMOS,
the camera is an ultra compact camcorder that is
capable of providing HDV in the full 1080 line
resolution.

By building on the affordability of HDV, the
HVR-A1E providers you with a migration path from
standard definition while retaining the qualities
of the popular DVCAM range such as ease of use
and multiple connections.

The HVR-A1E is ideal for situations in which space
is limited. The camera also broadens the range
of HDV tools available for professional users,
as it really does deliver HD for everyone.

Afforable
The HVR-A1E really means that high definition is
for everyone. Through the HDV format, this camera
allows you to capture HD pictures on a standard
DV cassette, providing both a cost effective
format and full 1080 line resolution.

The HVR-A1E also offers you the ability to choose
the most appropriate recording format for your
production. With this camera, you are able to
switch between HDV, DVCAM, and DV recording
which gives you full flexibility to record in
standard or HD mode. You can also take still
pictures as well, which adds to the list of
already impressive features.

Professional use
As a professional company, Sony realizes that
your needs are different to that of a consumer.
As a result, the HVR-A1E incorporates many specific
features to help support your needs.

Compact design
This camera helps to bring the realm of HD to
an even wider range of production. A lightweight
and compact design means that HDV shots can be
achieved even when limited on space. No matter
where your shoot may be, you can count on the
Sony HVR-A1E to deliver.

()

PPPPP