IR-Filters

[montespluga]

hi

does anybody has experience (or links) about the different IR-Filters ??

I'm not into it, but might be interesting to me. Thanks, montespluga

[robert_pellegrino]

You can give this a try for a starting point.

http://www.schneideroptics.com/filters/list/7/ir2.html

[montespluga]

thanks Bob

 

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did you made experience with it ??

As I understand IR-Photography, it does bring some new features, meanwhile its a bit tricky:

Am I wrong ?? My intention would be using it for architectual photography.

regards: montespluga

[robert_pellegrino]

I have done some work with IR filters and Ilford SFX. SFX is a near

infrared film i.e. extended red sensitivity range towards the IR.

When you use an IR filter that does not pass visible light, you'll

need to experiment with numerous levels of exposure. You will find

that most true IR films do NOT carry an ISO rating; it is a trial and

error affair at first. As I use an Arca-Swiss 6x9 with roll film,

the multiple exposure tasks are a bit more convenient than with sheet

film. You might want to give the SFX film a try without an IR filter

it is rated at 200 ISO and provides results similar to HP4 Plus.

Standard red filters for black and white film, will produce a more

intensified filter result than would be the case with standard pan

film. You can then work into using the various IR filters and compare

the results on a single subject. As I said before roll film does help

simplify this process, you can take a baseline shot on frame 1 with

no filter and normal metered exposure at ISO 200 then work into the

various filters and exposures on the same roll. I hope this helps.

[armin_seeholzer]

Hi

 

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I worked not so much but sometimes with IR up to now almost in 35 mm

but the problems are quite similar.

But last year I sold the last 10 paks 4x5 inch Kodak IR thad arrived in

Swiss! So I did in autum the first test with the 4x5es!

So it worked fine but I not finished with all my testings!

Some rules I think it is good with these films: 1. Film loading in

total darkness a lamp in a room should be cooled down bevor you loading

the film. 2.Take not old filmholders take the newest 3. If possible

stay in the shaddow with the camera if not take the black focussing

clothes or a jacket espesially when you move the darkslide out of the

holder!

And for the filter the 092 B+W (89B) is very good but expensive the

Hoya R72 is cheaper and the hase same effect!

[gene crumpler]

Check out the Infared Mailing List at;

 

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http://www.pauck.de/archive/mailinglist/infrared/mhonarc/idx_thread1.h

tm#12910

[michael_briggs2]

Try this link and the links you will find thereon:

http://www.pauck.de/marco/photo/infrared/infrared.html

 

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The only available LF IR film is made by Maco and doesn't go as deeply

into the IR as the former Kodak product. To get a dramatic IR effect

of white vegatation (the Wood effect) you will need to use a filter

that is almost or completely opaque to visible light. One example is

the B+W filter 092, which cutoffs wavelengths below about 680 to 710

nm. Maco has a table of filter recomendations:

http://www.thn.net/~maco/TAIRe.htm.

[montespluga]

Thanks a lot. It's so much material that it takes to me a while to study it.

As a little information: http://www.cocam.co.uk/CoCamWS/Infrared/INFRARED.HTM

which was the best source I did find. (Big manual)

montespluga