Welcome to the
All you need to know about lenses,
If you are looking to use a dummy camera as a visible deterrent, preferably in support of working overt or covert units, the first thing to consider is that the fake must look as good as the real thing.
If it looks like a dummy, then the chances are, any passing dummy will spot it a mile away!
The best type of dummy cameras are the ones that use the same external case as a proper working camera, but basically have no electronic circuitry fitted inside (if the camera is fitted with a flashing LED, you might as well bin it).
These dummy cases are available from a number of respected CCTV camera manufacturers.
To get the best overall effect, the lens has to bare a passing resemblence to a proper optic.
In truth, most low cost dummy lenses do just that; they bare a passing resemblence, but they dont look like the real thing.
For mission critical applications, Doktor Jon would recommend that you consider using a low cost standard manual iris lens .... in other words , a proper working optic.
The difference in cost between a standard dummy lens, and a basic working lens is about £ 20.00 ($ or Euros 25.00 - 40.00), which if you consider the overall cost of the system, is obviously rather insignificant.
Second hand lenses in good condition can also be considered.
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