Are Rollie/Efke ir films sensitive to ir film sensor in camera

[michael_riggs]

<p>I'm looking at cutting down on my photography arsenal (dang government budget cuts) and am not sure what 35mm camera to trade off.<br>

I have a few rolls of Rollie and Efke IR film, and I'm not sure if they are as sensitive to the ir film advancing sensor inside the camera as the Kodak HIE is. Are they? I use a Kodak 10s for IR work, but can I also use my Elan 7E for these or will it fog the film? The 10s is ok, but the Elan is better for metering, has more features, and the batteries are more common.</p>

[tony_duda]

<p>I did a quick web search, and the general consensus is that you can use Rollei 400IR in a Canon SLR that has an IR advancing sensor. The film has an antihalation backing, and does not go as far in to the IR range as Kodak HIE did. At most, you'll get some fogging near the sprocket holes of the film, but it shouldn't enter the frame area. I'm less sure about the Efke film. There are two versions, with and without the antihalation backing. My guess is that the "Aura" version without the backing may be problematic in any camera with an IR film advancing sensor. However, since Efke states that both versions have to be loaded in total darkness, it may be that neither can be used.</p>