Sensor size for indoor camera.

[wiz]

We are all aware of the desired sensor size to resolution chart which is important outside, where your IR LED's run out of effective range.


But does this still apply inside where you are talking about short indoor distances and can probably rely on the IR LED's to bounce around the room and keep things visible? would a 4mp in a 1/28" work? Or has anyone tried?

 

[wittaj]

An ideal ratio will be better, but less than ideal can work indoors for the reasons you suggested.

 

[fekry]

why fisheye cameras are never ideal sensor size ? i see there is 12mp cameras on 1/2.8" sensor from biggest brands like axis or hanwha but never saw it on 1/1.2" for example or bigger ?
is it acceptable for fisheye cameras to have higher mp on less than ideal sensor size?

 

[The Automation Guy]

We are all aware of the desired sensor size to resolution chart which is important outside, where your IR LED's run out of effective range.
View attachment 221363

But does this still apply inside where you are talking about short indoor distances and can probably rely on the IR LED's to bounce around the room and keep things visible? would a 4mp in a 1/28" work? Or has anyone tried?

First, the coverage range of the IR LEDs have nothing to do with the recommended sensor size/resolution ratio. "Normal" cameras (ie not thermal cameras, etc) need some illumination to work. IR LEDs can provide that illumination if no other light source is available which allows it to function in a "low/no" light environment. Objects falling outside of the IR LED coverage are simply not going to be clear on ANY camera capturing normal or IR light waves.

The same principles apply to "indoor" cameras. If you expect the cameras to provide good footage in low/no light environments, then the same recommendations apply On the other hand, if you only expect your indoor cameras to work well when there is illumination from the interior lights in the house, then clearly that is not a "no/low" light environment and you can get away with breaking this recommendation. The choice depends on when you expect to capture good footage - only when the lights are on, or 100% of the time regardless of the status of the house's lights.