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A tecnical question
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zk
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October 13, 2014 - 12:11 pm
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I need to implement a system which must include IP cameras with strong zoom lens and a compact HD DVR.

I currently have a Computar T34Z5518AMS-CS lens mounted on an analog OFK camera and I THINK this lens can work with both IP-BCEL2MP and IPBC-EL3MP cameras.

I need to use Pelco-D to remote control the ZF of the cameras and will mount them on a Bescor MP101 table for PT functionality. My application is VERY restricted in physical space so a PTZ camera does not fit.

Please give me your comments.

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Gilberto
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October 13, 2014 - 12:54 pm
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Hello ZK, are you looking to purchase a PTZ ( pan tilt and zoom ) or a great HDCVI or IP megapixel camera manual  Varifocal camera?

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zk
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October 13, 2014 - 1:43 pm
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Hi Gilberto,

I need a high resolution, high zoom, remote controlled solution. My current analog solution is no longer sufficient.

But I have no space for a conventional PTZ camera and I already own the Computar motorized zoom lens. Hence my question.

 

Regards

ZK

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Gilberto
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October 13, 2014 - 1:48 pm
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The cameras we have that have interchangeable lens are here

http://www.securitycameraking……2-ctg.html

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zk
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October 13, 2014 - 2:11 pm
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Thanks, I was hoping someone can confirm the Computar lens T34Z5518AMS-CS will work with both IP-BCEL2MP and IPBC-EL3MP cameras and recommend a compact basic DVR that includes RS-485 Pelco-D and allows remote access via client software or web browser.

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Brad Besner
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October 13, 2014 - 2:24 pm
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The computar lens should work fine since it has a fixed 1.8f aperture. This will allow maximum light to enter the lens even when zoomed in. However, this is a very expensive lens. We do offer a 2 Megapixel IP Bullet with a 6-60mm lens. Not sure if that would serve you better. We also offer a 5 Megapixel Box camera which would allow you to use the digital zoom and get high quality snap shots from long distances and you could use a smaller and less expensive lens. 

As for the lens compatibility, the lens will mount and function properly, but if you try to use the lens at a wide aperture instead of zoomed in you may be able to see the lens housing in the image on IP cameras that use a 1/2″ sensor instead of the 1/3″ sensor. However it seems unlikely that you will use the lens that way. 

As for RS-485 control, our 3 megapixel and 5 megapixel IP box cameras have built in RS-485 and Pelco D is an accepted protocol. 

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zk
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October 13, 2014 - 2:44 pm
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Great answer, clears my mind about this. Thanks !

I am trying to find out more information about the 5MP cam (digital zoom: how much?) but none seems available.

The 6-60mm lens is motorized ZF?

 

It is great to shop when the support is like this.

ZK

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Brad Besner
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October 13, 2014 - 2:55 pm
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Glad you are happy with our service. We do our best. Their are many contributors that are not employees as well. As for the zoom capability, you have to have something to compare it to. So for example, if you were comparing it to an analog camera and DVR that was recording at D1 resolution the comparison would work like this:

D1 resolution = 704 x 480 pixels = 337920 pixels total

5 Megapixel resolution = 2592 x 1944 pixels = 5038484 pixels total

5038484 / 337920 = 14.91 so a 5 megapixel native image is 14.91 time larger (and 14.91 times more detail) than a D1 resolution image. So you can get the same effective magnification with 1/15th of the zoom. So if you needed 187mm zoom with a D1 resolution recording then you should be able to get the same image detail with a 5 megapixel camera and a 12mm lens. 

This is all theory, but should be correct. 

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