Re: Shooting infra-red in your pinhole

Thanks for all the replies. I prefer to go to guidebooks when all else
fails but thanks for the suggestions, I'll keep them in mind. My main
concern was reciprocity failure. And just knowing that infra-red and
pinhole were compatable. It'll be interesting to see how IR reacts to
those extra long exposures (7+ hours) which I think is an area more
unique to pinhole photography. I was figuring on woodland pictures in
low light ... well, we'll see. Once again thanks.

On Tue, 22 Mar 2005 04:42:50 -0800 (PST), George L Smyth
<glsmyth@yahoo.com> wrote:
> I have shot infrared pinhole for a while (a few 4X5 images can be found at
> http://mywebpages.comcast.net/hmpi/Pinhole/Images/PinholeImages.htm).
> Reciprocity rules are no different with infrared than they are with "regular"
> B&W film. You will want to do a series of tests before counting on your
> results, as is always the case.
>
> If you use Konica 120 then you will want to use a #25 filter (a #29 filter is
> also possible, but I have not seen any difference when testing and you lost
> speed). I would not recommend using an 87 or 89 filter as Konica's emulsion is
> not sensitized far enough into the infrared to obtain acceptable results.
> Ilford's film is not an infrared film, but an extended red film (higher
> sensitivity in the red area, but is not sensitized to capture radiation into
> the infrared region). I have not tried the Macophot film yet, but hope to do
> so later this Spring (I will probably try their 4X5 film if B&H ever gets any
> in stock).
>
> You can find a fair amount of information about infrared photography at
> http://mywebpages.comcast.net/hmpi/Infrared/Articles/IRArticles.htm.
>
> Cheers -
>
> george
>
>
> --- odusseus <polutropos@gmail.com> wrote:
> > Has anyone tried this?
> >
> > I'm wondering if there is anything inparticular to consider. For
> > instance, are there different rules for calculating reciprocity
> > failure? Would I need to attach a filter in front of pinhole?
> >
> > I'm shooting 120 format. Is there any 120 film partial to decent
> > pinhole results?
> >
> > Any advice?
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>
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Received on Tue Mar 22 14:30:48 2005