We realize
this may be confusing. Here's some info which could be useful.
Infrared (IR) ZERO LUX SEE-IN-THE-DARK TECHNOLOGY
1.
How does this technology work?
2. Is the light actually 100% invisible and,
if so, how can the camera use it to "see"?
3. They see in the dark great, but how well
do these cameras image in daylight?
4. Are all Infrared products I see out there
pretty much the same?
5. What is a photocell and how is it useful
in IR lighting?
6. There's a small amount of light in the
area to I want to monitor- do I need IR assistance?
7. Do color cameras work with Infrared lighting?
8. What is a dual imaging chipset and what
advantage does it offer?
9. Are there any common myths or exaggerations
I should be aware of?
Q1:
How does this technology work?
A1:
To begin, there really is no camera which can actually 'see in
the dark' (pitch dark is referred to as 'zero lux')
on its own-though there are a couple larger CCTV
cameras out there which come close. So, any camera claiming to
do so must be aided either by visible/white or invisible (Infrared) light emitters of some kind. Infrared (IR) assisted
cameras are generally found built as a low lux black
& white video camera surrounded by LED emitters which
cast light at a a frequency outside the visible light spectrum.
The visible light spectrum starts at red (then orange, yellow,
green, blue, indigo) and ends at violet. Any color you can imagine
falls in there somewhere. Light which is outside our visible spectrum
is either lower and called "infra" red or higher and
called "ultra" violet. Back
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Q2:
Is the light actually 100% invisible and, if so- how can the camera
use it to 'see'?
A2:
The light cast out from our IR
equipment is 100% invisible to the human eye, though higher powered
IR cameras and spotlights (like ours) do have a visible dull red
glow on the emitter elements themselves. For black
and white video CCD
video camera camera imagers,
IR emitters cast light which is 'seen' as it would be with a visible
light. Obviously, the brighter or more powerful the output of
illuminators- the farther the light is cast. Eyespyvideo only
carries equipment with high power Infrared emitters- beware of
so much low illumination and low resolution
systems flooding into the marketplace right now. Back
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Q3:
They see in the dark great, but how well do these cameras image
in daylight?
A3:
We really can't speak for the rest of the industry's products-
but ours are great in daytime conditions. The picture viewed is
as sharp as any of our other fine cameras- you'll only realize
they're different after the sun goes down! One note worth mentioning-
no video camera will perform well when directly pointed at a bright
light source (sun, floodlights, etc.). The closer the light source,
the larger the 'halo' effect. Such a condition is often easily
remedied by the use of a sunshade or by simply pointing the camera
down slightly. Back
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Q4: Are all Infrared products
I see out there pretty much the same?
A4:
Not by a long shot. Exaggerated claims abound, usually as to the
actual distance of illumination- or the actual resolution
of the camera itself. Don't worry about our products though- we've
hand selected the best for you. All of our IR
cameras and spotlights will do what we claim and then some! Do
not confuse with so many of the 'toys' or junk floating around
out there. Most cameras you find with 6-10 emitter lights will
rarely illuminate past 8-10 feet! Why? Much of our competition
uses low power LED emitters- and that is why you see products
out there which require a large cluster (up to and over 100 separate
emitters) to do the same job as just a few high power emitters.
Also, the larger clusters require a lot more electric current
and create a lot more heat. Overheating problems have forced several
cameras to be removed from the market, though many resellers are
still carrying them- beware. Back
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Q5: What is a photocell
and how is it useful in IR lighting?
A5:
A photocell, in terms of IR
cameras and lighting, is simply a light sensitive switch that
automaticallyturns the LED emitter bulbs on in the absence of
light or off in the presence of light. What makes that beneficial?
Well, IR emitters, like any light bulbs, don't last forever. For
example, our IR-2HAD
is rated for 6000 hours. Older versions (and quite a few you still
see out there) DO NOT have a photocell and are therefore incapable
of turning emitters off. The emitters are then lit constantly-
wasting themselves in daylight hours. The ones that we use are
actually quite amazing- very advanced and capable of adjusting
to all sorts of lighting conditions- including, of course, pitch
dark or "zero lux"
condtions. Back
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Q6: There's a small amount
of light in the area to monitor- do I need IR assistance?
A6:
A good question that's not easy to answer without actual field
testing in the given location. Our black
and white cameras (either weatherproof or an indoor unit mounted
inside a window) require just a small
bit of light (such as a streetlight) to image quite clearly.
While not like the super bright "daytime" picture-.
*NOTE: Overhead porchlights are generally not a good source of
lighting- if too much illumination from the light gets into the
immediate view of the camera, the imager will be tricked into
'thinking' that it is daytime and will automatically turn off
it's light boosting (or gain) ability and create a lot of darkness
in. Plus, they don't cast much distance for illumination. Floodlights,
on the other hand- may be an EXCELLENT illumination source if
pointed toward target area with none of its light pointing back
toward camera lens. A general rule is that there's no such thing
as overkill when it comes to attaining the best quality video.
Back
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Q7: Do color cameras work
with Infrared lighting?
A7:
No- the nature of the way colors are imaged doesn't allow it.
Any time you see or hear the words "color"
and "Infrared" in the same camera, it must either have two separate
cameras OR incorporate the new "dual" imaging chipset
technology (i.e. our #CC-X2,
#IR-5HAD
or #IR-5EX).
Back
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Q8: What is a dual imaging
chipset and what advantage does it offer?
A8:
A 'dual- imaging' chipset is so named for its ability to automatically
revert from imaging in color
to black
and white when encountering lower
lighting conditions. This technology is a breakthrough as
many want color- but are finally beginning to understand its drawbacks
in lower lighting conditions- where it may appear grainy. Rather
than having to switch between two separate cameras for alternating
light conditions, a dual imager allows the same camera to view
in color when lighting is adequate, but switch to monochrome
/ black and white when light falls below that required for adequate
color imaging. We offer 3 cameras with this technology- our #CC-X2
covert pinhole
board camera, and the weatherproof #IR-5HAD
and #IR-5EX
with over 45' of Infrared illumination.
Back
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Q9: Are there any common
myths or exaggerations I should be aware of?
A9:
Yes. As mentioned above, it is very common to see even greatly
exaggerated claims of distance
in illumination (i.e. Infrared output power) in the wide variety of products throughout
this industry. Two IR cameras or spotlights may look very similar
(or sometimes even the same!), but have entirely different "guts".
To minimize costs and/ or maximize profit, there are a lot of
companies out there offering low resolution cameras with very
weak illumination emitters- passing them off as much more and
relying on the ignorance of the consumer to get away with it.
Eyespyvideo.com ONLY offers the very best cameras and highest
powered illuminators available. Do not confuse with so much of
the junk flooding the market right now. Remember, poor quality
video is about as good as no video at all- why waste your time
and money? We always strive to give our customers MORE than they
paid for! Back
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