Mismatch format between lens and cameras

[Ramji Krishnan 0]

Hi

 

I have to use a 1" lens on a 1/2" CCD camera. Is there a table/calculator that can provide me information on the impact of this mismatch on the Field of view ? Need to view a car at about 1.5km

 

Thanks.

[ssnapier 0]

What do you mean by a 1" lens?

[Ramji Krishnan 0]

Hi

 

I have to use a 1" lens on a 1/2" CCD camera. Is there a table/calculator that can provide me information on the impact of this mismatch on the Field of view ? Need to view a car at about 1.5km

 

Thanks.

[joseph.chen0312 0]

As you described, I assume thisunits is for industrial inapection? 1/2" CCD

[ilk 0]

Hi

 

I have to use a 1" lens on a 1/2" CCD camera. Is there a table/calculator that can provide me information on the impact of this mismatch on the Field of view ? Need to view a car at about 1.5km

 

Thanks.

 

You can fit a 1", 2/3" or 1/2" lens on a 1/2" CCD camera with no effect on the image.

 

You can use a standard lens calculator for a 1/2" CCD sensor to predict the image size at a pre-defined distance if you have the focal length of the lens you intend to use.

 

You can also work the calculation the other way around if you know the distance and image size as a percentage of screen image (horizontal/or vertical)

 

Ilkie

[survtech 0]

I agree with Ilker. As long as you don't choose a lens designed for a smaller imager, which would cause a tunnel effect, you're good to go. For instance, on a 1/2" camera, a 16mm 1/2" lens would provide the same field of view as a 16mm 2/3" lens or a 16mm 1" lens.

[Numb-nuts 1]

Conversely, if you use a lens 1/3 inch on a 1/2 inch inch. camera you'd get whats known as a porthole effect.

 

 

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