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This indoor dome color CCTV camera has a
high resolution infrared sensitive 1/3" Sony color digital
signal processing CCD video sensor and an aspherical 3.6mm lens.
Infrared Sensitive
The ECL-5HD is sensitive to infrared
light, but it does not contain an infrared light source. Since
it does not provide a radiant IR source you will need to provide
one if you want to take advantage of this feature. If you do you
will be able to take advantage of another premium feature built
into this security camera - an aspherical lens.
Aspherical Lens
Most users focus a camera lens using
visible light. While infrared (IR) light is present in all
visible light, the amount is so small no one needs to consider
it one way or the other. Visible light and IR light have
different wavelengths and strike the lens at slightly different
areas, so the perfect focal point for an image created by IR
light will be slightly different than for the same image in
visible light. This makes IR images sometimes appear slightly
out of focus - a phenomenon known as "focus shift".
An aspherical lens compensates for IR
focus shift with its shape. Instead of using a perfect sphere
model when creating the lens, a slightly flattened sphere shape
is used, hence the term aspherical. In operation, this lens
shape guides IR light to the same focal point used by visible
light. This makes an image formed by IR light just as clear and
sharp as images formed by visible light.
Compare Dome Cameras
Not sure which dome camera model will fit your needs best?
Check out our Dome Comparison Chart, which shows all of our dome camera models.
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