Labs processing b&w infrared 35mm film

<p>Does anyone know of labs out there that process b&w infrared 35mm film? I checked with Dwayne's, where I've sent colour and b&w 35mm films for processing, but they won't handle b&w infrared.</p>

<p>Try <em><strong>Ilford</strong></em> in California</p>

<p>I suspect most people do it themselves. Which film were you considering?</p>

<p>Many processing machines use IR light to keep track of film going through, and so can't process IR film. </p>

<p>Thanks. Their Web site doesn't specify if they handle infrared, so I e-mailed them. I'll report back when I get an answer. I checked out their prices and they are NOT cheap!</p>

<p>Glenn,<br>

Specifically, Rollei 400 infrared.</p>

<p>The Darkroom responded and, yes, they do handle b&w infrared 35mm film.</p>

<p>Try this place. .</p>

<p>http://www.boontonmainstreet.org/pub/listing/profile/105/professional_services/Tech+Photo</p>

<p>The IR sensors used in film processing are likely GaAs at about 870nm.</p>

<p>Rollei 400 goes down to about 820nm (down in energy, up in wavelength) so it might not be a problem. You might indicate the specific film you are interested in, when asking labs.</p>

<p>Many black and white films go to about 650nm, which is where most reds are, even though it is commonly indicated that visible is 700nm to 400nm. </p>

<p>The eye has a fairly long tail, dropping but extending a ways past 700nm, though not so sensitive. A 720nm filter looks very dark red, but you can see through it if the source is bright enough.</p>