Camera Recommendations

[66ChevellePost 0]

Hi All,

 

I need some suggestions on cameras. I need two analog cameras. Cameras will be mounted approx 10' to 12' high. They will be outside and I do need something for night/low light.

Specs for the the 1st one. Target is Approx 65' away, object is approx 10'x10'.

Specs for the 2nd camera. Target is 35'-40' away, object is approx 15'x25'.

 

I had one suggestion to go with a box camera with a verifocal lense.

 

 

Thanks,

Kenny

[Soundy 1]

According to this lens calculator: http://www.isorainbow.com/lens_calc.htm

 

For a 10' field of view at 65' you need about a 30mm lens on a 1/3" sensor, or 20mm on a 1/4" sensor.

 

For a 25' wide view at 35', you'd need around a 6mm lens on a 1/3" sensor, to 8mm at 40'.

 

For the latter, this camera would do nicely: http://www.cnbusa.com/en/html/product/product.php?seqx_prod=1073

 

We use these all the time; their low-light performance is outstanding.

 

For the former, you could use the same camera, although it wouldn't give you a very tight view on the object (at 65' its 2.8-10.5mm lens would give you about a 30' wide field of view). Depending on what the object is, this may be preferable, as you could see anyone approaching it.

 

For that, you could maybe use this: http://www.cnbusa.com/en/html/product/product.php?seqx_prod=1076

 

Uses the same sensor, so should give the same low-light performance, but will let you use a longer lens of your choice - this one would do: http://www.cnbusa.com/en/html/product/product.php?seqx_prod=952

 

The drawback to that camera is that you'd have to put it in some kind of sealed housing if you're mounting it outdoors.