| Pacific
Security Systems, Inc. located in Walnut
Creek, CA, provides high quality, user-friendly
CCTV security systems and intercoms, including
sale, installation, networking, repairs, maintenance
and training. We serve San Francisco and the
Bay Area, as well as Sacramento, Stockton, and
San Jose areas. Among our satisfied customers
are various businesses, such as restaurants,
parking garages, retail stores, warehouses, apartment
buildings, hotels, as well as private home owners.
With Pacific Security
Systems, Inc. you can
be assured
you’re getting
the best:
•
High
quality equipment
• Unique
system design
• Flawless installations
• Quick, reliable technical support
• Great customer service
• Very affordable all-inclusive monthly maintenance
• Free software upgrades
• Free
estimates and consultations
Pacific
Security Systems, Inc. is absolutely worth
your trust when selecting your CCTV system
provider. The importance of having
your system professionally designed cannot
be underestimated. It’s
a fact that when the police seek to use CCTV
evidence in court it is found to be inadmissible
in well over 50% of cases. Even though almost
anyone can suggest using a certain number of
cameras and their positions at a location,
only those who have experience in this field,
through an understanding of the principles
of optical science, will be able to recommend
cameras and lenses that can give the best picture
definition or coverage. By locating cameras
correctly, you’re adding value to your
system, and get ability not only to view
the area of concern, but also other points
of interest.
For instance, one company may provide a view
of everyone entering through a door, while
another is also able to offer incorporating
an overview of the room without increasing
in cost or equipment. In many cases, clients
find that a view of people leaving rather
than entering the area, in fact, provides
much more
valuable evidence in the event of a crime.
Our philosophy is to provide high quality
products, reliable technology support, and
outstanding service to our clients. Pacific
Security Systems, Inc. enhances its teamwork
efficiency in all aspects, keeping up with
CCTV innovation, providing relevant equipment,
quality guaranty, great customer service and
human resource management. Pacific
Security Systems, Inc. is your best choice in CCTV industry!
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190
N. Wiget Lane, Suite 202
Walnut Creek, CA 94598
Phone:
(925) 934-CCTV (2288)
Toll Free: (877) 474-CCTV (2288)
Fax: (925) 943-CCTV (2288)
E-mail: info@psscctv.com
Click
here for more information about security
cameras lenses
The advantage to a c-mount camera is that the
lens can be changed. If you need to see further
than 35 or 40 ft then you'll need a c-mount camera
with a special lens. C-Mount lenses are available
from 4mm to 50mm. A 4mm lens provides facial
detail and a 70 degree angle of view focused
up to about 35 ft. An example of where you might
use a fixed 4mm lens is in a small office, or
at home to focus on your driveway.
A higher millimeter lens will provide further
distance, but narrows the field of view. So,
a 16mm lens would provide about a 15 to 20 degree
angle of view at a focus distance of about 35
ft (or a 70 degree angle of view at about 140
feet). In general, a 8mm lens is like a 4mm lens
zoomed in 2 times. Similarily, a 16mm lens is
like the 4mm lens zoomed in 4 times.
Many times, the best option is to use a varifocal
lens. This will allow you to vary the focus from
5 to 50mm. So when you install the camera you
can fine tune the focal distance and angle of
view. An example of where you might use a varifocal
lens is outside (or inside) a large commercial
building where you need more distance than 35
ft. and the varifocal lens will allow you to
adjust the focal distance to your preference.
If you want to use cmount cameras outside, you
must put them in an outdoor camera housing.
CCTV lenses are available
in two different lens mounts. "C-mount" lenses have
a flange back distance of 17.5mm; "CS-mount" lenses
have a flange back distance of 12.5mm. The flange
back distance is the distance from the flange
of the lens (beginning of the lens mount) to
the focal plane. All of the C-Mount cameras we
sell can be adjusted for installation of a CS-Mount
lens as well as a C-Mount lens.
Click here for more information about security
cameras lensest. |
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