Rollei IR400 without filter

<p>I was reading online that if you use Rollei IR400 without a R25 or R72 filter then it will just be a fine grained black and white film is this correct?</p>

<p>. It is an infrared film, but not quite as infra red sensitive as other such films. You do get the infrared look. I used the 4x5 sheets, and was a little disappointed in the quality of the picture. Not as good as a normal 120 film. Also, many of the sheets were missing the notches, so it was easy to lose track of which side was out.</p>

<p>Most (B&W) infrared films suggest a test exposure at the rated ISO with no filter to check the exposure and development processes. These films are not just sensitive to the IR wavelength, but have <em>extended</em> sensitivity into the IR region. That said, this particular film is said to have slightly less IR sensitivity than others like the Maco products, but that may suit your purposes. I have not tried it myself.</p>

<p>Yes, it will preform like any Pan 400 film should. Not the best bang for the buck in this role, but certainly more than usable.</p>

<p>I guess, some your guys, should better read the information about the ROLLEI IR400 at <strong>dr5</strong>, with or without IR filter!<br>

Cheers</p>

<p>this is what I was looking at, so if you process it like this its just a B&W?<br>

http://www.dr5.com/rolleiir.html</p>

 

<p>Brian, correct with ISO200, and you can get the Rollei IR400 also processed at <strong>dr5</strong>, as an B&W slide film! No sweat!</p>