LF Infrared

Anyone played around with Maco Infrared film with their LF camera.

I'm considering trying some but I want to get some pointers first

(its a bit expensive to be "flaying around in the dark")

 

Is there a problem with fogging through the bellows or film holders?

Any issues with focusing or exposure I should be aware of? What

filter (I have a R25 - should I look to a special wratten filter)?

 

Thanks in advance.

 

Steve

I have been trying to get the film to behave in some of my pinhole cameras. No astounding luck yet but can report that I've seen no fogging with my old Lisco film holders. My most recent and best development so far has been in Rodinal 1:100 for 21 minutes with the film rated/guesstimated at a blazingly speedy 4. I would strongly suggest using an opaque filter such as the Hoya R72. Shooting Maco 820c with a red 25 is just like using very expensive B&W.

 

Best of luck and I'll look forward to your results.

Yes, I've "played around with it". And a very good film it is, too...

 

I have had no problems with fogging, although that will depend on your bellows. Some may not be IR-proof? Film holders are no problem.

 

The MACO IR820c is sensitive to blue, red and IR light. You will get some IR-effect with a R25 filter, but a 72 or similar will be much better.

 

I have used small apertures and long times, and haven't seen any focusing problems. The one time I used a larger aperture (f:8) I just extended the bellows "a smidgeon". That seems to have worked (210mm Xenar on Linhof Color).

 

Have fun ;)

This film is capable of tolerating sever over exposures (32 times), providing that you know how to develop it. With the 092 filter by B&H (which is a must for ir recording) you need at least 2 seconds at f/22 in full sunshine, development in Microdol-X. No fogging in my equipment. See this:

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=005PWL

 

http://www.photo.net/bboard/big-image?bboard_upload_id=11689884

 

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=004lzK

<p>A previous answer re IR film and bellows of LF cameras: <A HREF="http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=005IY4">Infrared4143/Platinum Process</A></P>

 

<p>And another recent discussion of IR film, with some answers about the Maco film: <A HREF="http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=005IjO">B/W IR film exposure - once and for all</A></p>

the maco 820c (comes in aura now) Is a good film I use it between 6 and 8 iso with a hoya r72 filter. It does a nice job, I have examples in my public area. The only problem i've had with fogging is my changing bag isn't quite light tight and sometimes the septum on a few film holders leaks, but it is a dream to use and comes in halation and no halation layers now (I haven't shot to much aura yet)

 

hands down, get a box, be careful and play with it...

In terms of use, the main difference I have noticed between Maco IR film and more typical B+W films from Kodak and Ilford is that the Maco has a softer emulsion when wet. Care in processing is needed.