You can try Epitex IR leds. They have the widest variety of wavelength and highest power that I am aware of. I heard that most CCTV cameras have peak sensitivity near 760 nm. The trade-off is usually between responsiveness vs. visible red light. At 760, 810 & even 880 nm there is some visible red depending on the LED. Epitex is distributed by Marubeni in the U.S.