Hi, bought a sony effio 700 tvl varifocal off ebay. Hooked it up today to my 4channel maplin "sentient" dvr - distance is clearer (my other 2 cams are 480 tvl) so expected that.
However, night mode is AWFUL! the cheap 480's that were supplied with the DVR have a noisy picture at night, anthough the effio is sharper it only has one spot of IR illumination in the center of the picture. The cheap 480 have a much further vision.
there are twice as much LED's on the effio but no where near the distance !
I'm lost now, I wanted the same distance (30m) of IR but sharper, hence getting the effio. all I can see now is a 6ft image about 5m from the camera!