if the cameras don't actually put out any light then you should be fine. every thing emits IR radiation. your plants will put off IR. the camera then uses this heat signature to make an image.

that's the jist of it, you can read some more here.

if you are still worried why don't you put your cameras, even if they are infrared, on a motion sensor? that way you don't have to worry about any ill effects on your ladies.

phytorchrome (the photoreceptor for red light) use red and IR to regulate stem growth and flowring response. red light turns PR into PFR. PFR signals the plant to grow short and stocky stems. IR turns the PFR back into PR.

the plant uses red and IR to measure uninterrupted darkness.


-shake