gene_e._mccluney Posted May 1, 2007 Share Posted May 1, 2007 Yesterday I got my free trial of the new Maco Infrared prototype film (10 sheets 4x5) This is made by Agfa/Gevaert in Belgium according to Maco. In addition, in the package was a 25 sheet box of Roelli Infrared, and a 10 sheet box of Roelli R3, and a little vial of ACU-1 developer powder, which I guess is their recommended developer. Never having shot infrared film before, I would appreciate any and all advice on exposure, and how to meter a sunlit scene. Link to comment Share on other sites More sharing options...
wickedmartini Posted May 1, 2007 Share Posted May 1, 2007 How about giving us some advice on how we can get it for free? : ) Link to comment Share on other sites More sharing options...
nickc1 Posted May 1, 2007 Share Posted May 1, 2007 Drop an email to Wolf Rainer Schmalfuss (a photo.net patron and the technical guy at Maco) I am also part of the trial and he was very helpful - his suggestion was 80ISO without a filter, and process as per the instruction sheet in the pack. I have only just go around to doing some test shots due to family commitments over the Easter period. When these are complete I'll send the info to Wolf, and when he gives the clearance I'll try to share them here if anyone is interested. The original offer to be included in the trial was in this link, back in February. http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00K3xx Nick Link to comment Share on other sites More sharing options...
stephenwood Posted May 1, 2007 Share Posted May 1, 2007 I received the email it was shipped over a month ago and still haven't seen it. Link to comment Share on other sites More sharing options...
helenbach Posted May 1, 2007 Share Posted May 1, 2007 Mine just arrived in New York, postmarked 20 March. Best, Helen Link to comment Share on other sites More sharing options...
wolf_rainer_schmalfuss Posted May 2, 2007 Share Posted May 2, 2007 Sorry, folks, you're too late. What I've heard from MACO, all test samples are send out to the individual participants, and test results are coming back to MACO already. Cheers Link to comment Share on other sites More sharing options...
profhlynnjones Posted May 2, 2007 Share Posted May 2, 2007 Hi Gene, Shoot it with A25 red, F29 deep red, or the 87 or 88 IR filters. While the films are not sensitive to Green, they are sensitive to blue, blue/violet, ultra violet, and red in addition the IR sensitivity peaking at about 820nm. I think I still have some exposure/process times for Maco 820. Lynn Link to comment Share on other sites More sharing options...
oskar_ojala Posted May 2, 2007 Share Posted May 2, 2007 I don't know the specs for this film, but the old Maco IR worked nicely with a RG715 (#88A equivalent) filter. The focus requires a slight adjustment, I believe I started a thread about this long ago in the LF forum, you may want to look that up. Focus is a bit challenging in LF due to the shallow DOF and different lenses having different properties. Link to comment Share on other sites More sharing options...
gene_e._mccluney Posted May 3, 2007 Author Share Posted May 3, 2007 How does one know which direction to shift the focus on a view camera? The lenses don't indicate anything? Link to comment Share on other sites More sharing options...
aplumpton Posted May 4, 2007 Share Posted May 4, 2007 As I remember it, a correction of 1/4 of 1% x focal length is usually required (for Kodak IR in any case), if you can make that adjustment to your focus (forward movement, having a helicoidal mount helps). For less extreme IR wavelength films (Knoica 750 or the equivalent), apparently need a lot less correction. Apparently, simple lens designs (4 element Tessars, triplets, etc.) focus IR rays best, and require little correction. Link to comment Share on other sites More sharing options...
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