Gild a raison, même si dans certaines conditions ça marche assez bien, les voyeurs risquent d'être déçus. Le procédé n'a rien de mystérieux mais les prix pratiqués sur Kaya-optics sentent l'arnaque.
Pour les marques, Hoya est bien connue, il nest pas impossible de trouver quelque chose chez Cokin. Chez un photographe il faut faire référence aux filtres Wratten Kodak 87 ou 89.
Voici un extrait d'un forum qui me semble intéressant :
« The best IR camera's out there are the Nikon Coolpix series (early model), Canon Pro70, and the Sony's are incredible. I have a Pro90 that is great. People who are really into it take the 990 and remove the IR filter OUT of the camera making it almost solely an IR device. This guys stuff is incredible and he uses a cut up 990...
http://infrareddreams.com/
NOTE!!!! If you want the funky colors like you posted you must use a Hoya R72 IR filter. This is actually a NIR filter (Near infrared up to 700nm). So color will trickle through it is a deep, deep Red filter. If you go to true IR filters (87,87C or an 89) you will get dominantly BW images because it is a black filter and truly cuts all visible light...
http://www.cliffshade.com/dpfwiw/ir.htm This is a great site for IR information. Read it from top to bottom... From this site about your camera...The 3.34MP Nikon CoolPix 990 is considerably less IR sensitive than the 2.11MP 950—enough so that several RPD correspondents have given up on the 990 with deeper IR filters like the Wratten 87 series and the Hoya RM1000, all of which work quite well on the 950. The IR sensitivity of the Nikon CoolPix 995 presumably equals that of the 990. »
Pour les rebelles à l'anglais, voici une adresse pour traduire :
http://world.altavista.com/tr
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