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si_kungs

speed dome with gold tint for vicon system

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i have a client who is looking for a speed dome with gold tint that can be connected with vicon system. what speed dome can you recommend. i'm not familiar with vicon

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sir the domes are like the ones installed in casino, the gold tint will not let the people see where it is looking.

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It probably won't work. You need a product that will pass enough light to the camera while still blocking outside view of the camera's position. AFAIK, most colored bubbles have the gold or silver material sprayed on the inside of the dome at the factory. And they still block more light than smoked bubbles. The mylar product would probably be impossible to attach smoothly to a curved dome.

 

Gold and silver bubbles are far more expensive than clear or smoked domes - at least double the price. Replacement Pelco DF-5 clear and smoked bubbles are $75. As I recall, the gold and silver bubbles are closer to $150. Thay are also very difficult to clean since the inner coating is easily washed off.

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We mostly use clear domes unless the camera is very low or in certain situations. The reasons for this are:

* Most of our cameras are high up where no one could tell where they are pointed even with a clear dome.

* Smoked domes cut light by one f stop, which is often enough to cause the picture to get grainy in darker areas as AGC cuts in.

* Setting a camera's iris is more difficult with a smoked dome.

* We can see 100% of the casino floor anyway so who cares if anyone knows where one individual camera is pointed.

* Just knowing which way a camera points doesn't tell someone what it can see. Wide-angle lenses allow a camera to see up to a 150 degree angle or more.

* Add Megapixel to that and one camera can zoom in anywhere over that full angle for as clear a view as would require multiple analog cameras.

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Have you looked at the drop ceiling tile domes?

They come in gold/chrome and work well, but in my opinion they are rather large.

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Like those?

I know of em in 8inch and 12inch domes...

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It is. You get the same effect with any tint, whether on a camera dome or a car window. The darker the tint, the larger the light loss. Silver and gold tints lose even more light than grey.

 

Here are the light loss characteristics for Pelco Spectra IV SE dome systems:

 

Light Attenuation

Smoked f/0.5 light loss

Clear Zero light loss

Chrome f/2.0 light loss

Gold f/2.0 light loss

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