Cokin Nuances Infrared 720 (89B) filters are the best that money can buy, but you'll need a slot-in filter system ...

The Fotga Adjustable Infrared Filter can cut more or less visible light so you can dial in the exact IR effect you want – but is it any good?

Ice HB760 infrared filters give contrast-rich B&W shots on a super-tight budget, and offers a low-cost, risk-free way to try your hand at IR photography ...