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  1. #1
    Willie Jan's Avatar
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    Infrared wood effect

    Hi,
    i shot a roll of 120 maco IR 820 last weekend to test it out with a hoya 715 nm filter in front. I got pictures, but no wood effect on grass etc...
    Is this because of the early spring (not a heavy sun), of can it be something else?

  2. #2

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    In my limited use of Maco 820, I've found it needs lots of filtration and seems to respond well to over-exposure. I have no idea where a red 25A filter fits into the scheme of things in regard to nm but it has an effect but not a huge one. I use some unexposed developed E6 as a filter to obtain 'wood' effect.

    The exposure details of the attachments were...

    film414-08 --> 1/30sec @ f16, no filter
    film414-09 --> 1/4sec @ f16, 25A (red) filter
    film414-10 --> 1sec @ f16, E6 filter
    Attached Thumbnails Attached Thumbnails film414-08.jpg   film414-09.jpg   film414-10.jpg  

  3. #3
    Willie Jan's Avatar
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    i used the Hoya R72 IR filter (89B)

    exposed it as a 6 asa film.

  4. #4
    colrehogan's Avatar
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    Quote Originally Posted by Willie Jan
    Hi,
    i shot a roll of 120 maco IR 820 last weekend to test it out with a hoya 715 nm filter in front. I got pictures, but no wood effect on grass etc...
    Is this because of the early spring (not a heavy sun), of can it be something else?
    Without seeing any of the shots you took, Willie, it's rather difficult to say. I did this shot in November (not exactly IR season), using an 88A filter. The sun had set and the day was overcast and you won't see as much of an IR effect as you might otherwise normally see. You don't need a really heavy sun, though I suppose it depends on what you are looking for in the picture.

    http://dianemaher.fotopic.net/p9564485.html
    Diane

    Halak 41

  5. #5

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    There are some examples of the Maco 820c film taken with the Hoya R72 filter on Marco Pauck site

    http://www.pauck.de/marco/photo/infr..._of_films.html

    These examples reflect my experience with this film/filter combination in that it can achieve a good wood effect with jet black skies given the correct lighting.

  6. #6
    Ed Sukach's Avatar
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    Quote Originally Posted by schambuk
    There are some examples of the Maco 820c film taken with the Hoya R72 filter on Marco Pauck site
    http://www.pauck.de/marco/photo/infr..._of_films.html
    Thank you for the listing of this site!! Some of the most interesting and useful information I've seen anywhere on this machine!!
    Carpe erratum!!

    Ed Sukach, FFP.

  7. #7
    Willie Jan's Avatar
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    indeed, a very usefull link.

    thanks!

  8. #8
    rbarker's Avatar
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    I suspect your problem is mostly a matter of time of year and latitude - essentially, how much IR there was in the light. As IR is absorbed by the atmosphere, season and angle of the sun can greatly affect the amount of IR, and thus the degree of IR effect showing in the film.
    [COLOR=SlateGray]"You can't depend on your eyes if your imagination is out of focus." -Mark Twain[/COLOR]

    Ralph Barker
    Rio Rancho, NM

  9. #9
    colrehogan's Avatar
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    Thanks Ralph, that's basically what I was getting at, but couldn't figure out how to say it.
    Diane

    Halak 41

  10. #10
    Ed Sukach's Avatar
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    BTW ... If I remeber right, Minolta is producing a Spot Exposure Meter expressly designed for use with Infra-Red film. I'll go back and check on where I saw it listed ... Calumet, B&H...?
    Carpe erratum!!

    Ed Sukach, FFP.

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