Originally posted by Theov39 On a semi-unrelated point, why have IR filters, esp IR72, suddenly become so expensive? They used to be so reasonably priced but now even a 52mm IR filter can be $40-60 and larger diameter filters much more than that. The tech behind them really is not that complex. Here is a good example of what I mean:
Hoya 77mm R72 Infrared Filter B-77RM72-GB B&H Photo Video
Probably a combination of two factors :-
Firstly, overall demand is down, "i/r effect" can be easily produced in software, so unless you've got good reason for wanting a genuine i/r image you don't "need" one.
Secondly, the marketplace is there to be exploited. If you really do need one, you'll have to pay for it.
The film manufacturers no longer control the i/r imaging market. They needed to sell filters so they could sell their film, so they kept the prices down to encourage sales of film. Aftermarket filter manufacturers had to keep their prices similarly low else they wouldn't sell any at all.
It's now mostly a fashionable domestic market, so, like growing your own vegetables or making your own preserves, all the ancillary equipment has soared in price