Red 25 v. 29 for infrared and general B&W photography.

Discussion in 'Accessories' started by francis_bartus, Feb 20, 2005.

  1. Hi everyone,
    I am looking for a red filter for both infrared photography (with Kodak HIE) and general Black and White (mostly landscapes.) I am considering either a Red 25 or a Deep Red 29; most importantly, I want to make sure the filter sufficiently enhances the infrared effects of Kodak HIE--blackening the skies and whitening foliage, etc. I have read that some infrared photographers use a Red 25, but others recommend a Deep Red 29.
    Also, I plan to use the filter for dramatic landscapes with "popping" white clouds and dark grey or black skies. My question here is: will the Deep Red 29 be too exaggerated for this purpose? I know that the Red 25 has a significant impact on skies and green foliage--this is precisely the effect I want. How different are the two filters, really?
    Would a Deep Red filter be the best choice for both infrared photography and contrasty black and white landscapes, or should I stick with a Red #25?
    Thanks for your help, Francis.
     
  2. Francis,
    I use a Red 25. You will get dark but not black skies with a 25. I have not used a Red 29 so can't help you there...

    allan
     
  3. 25 is medium red and 29 dark red. There are also specialised infrared filters so dark you won't see a thing through a SLR, more expensives but they do maximize that IR look.

    I don't use Kodak HIE but it seems to me that a 29 would be just right for you : quite bold with regular film and acceptable for infrared.

    It is a mather of preference but i always found the common 25 too much for adding contrast and too shy for dramatic.

    Note that you can add power to these by stacking a polarizer.
     
  4. Thanks, Francois--that was precisely the kind of answer I was looking for.
     
  5. You will find that the 25 is very common and the 29 is very uncommon. I suppose you can get it by mail okay. But I have never actually seen one, even at camera shows where they have tubs full of filters of every description.

    Anyway, I'd try the red #25, if that's not enough, then ante up the $100 and go for the opaque filters.

    How white and how dark things appear depends on the exposure and development and printing exposure- it's not just the filter that does all that.
     
  6. Kodak TMY with Tiffen 25A Red filter:
    [​IMG]
    Kodak TMX with Tiffen 25A Red filter:
    [​IMG]
     
  7. I use both, top quality B+W filters bought cheaply on Ebay. The 29 will supply what you are looking for with HIE much better. With normal monochrome the 29 will be a little slower but not look terribly different. Get both and experiment!
     
  8. I don't have a 29, but my side-by-side "tests" using a 25, both on "normal" b&w film, (FP4) and several i/r films (SFX, HIE, Konica & Maco) indicate that the results achived are very similar ... my conclusion being that using a 25 with i/r film is an expensive option, far better i/r effects being obtained with an 89B.

    As always, your mileage may vary, but just because you get a pleasing effect using a 25 with i/r film doesn't mean you couldn't have achieved the same result with conventional film.

    For HIE, I'd definitely recommend an 87 filter. It's an expensive film and seems silly not to make the most of it's i/r capabilities (that most other i/r films can't manage).
     
  9. Looks like I'll go with a 29 to start out... I like the HIE results that I have seen with it, and I'm not ready to ante up the $100 for an opaque filter at this point. I am glad to hear that the 29 won't completely obliterate regular monochrome film. As far as getting one, I plan to just buy one on B+H--no big deal there.<p>Thanks for all your helpful advice!
     
  10. if you do decide to try an opaque filter, you want might to check with Harrison & Harrison in CA. i picked up a few different IR filters from them at around $25 each...glass ones with threads, not gels....
    don't have a website but you can mail them at: HarrisonOP@aol.com
     
  11. Kodak HEI & deep red #29 filter. Russ
    00I4fE-32418484.jpg
     

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