Infrared Photo's? HOW?

Discussion in 'Digital Photography' started by LERsince1991, May 28, 2009.

  1. LERsince1991 macrumors 65816

    Joined:
    Jul 24, 2008
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    UK
    #1
  2. bartelby macrumors Core

    Joined:
    Jun 16, 2004
    #2
    I used to do a fair amount of IR film stuff. Since switching mainly to digital I haven't tried.
    Mainly due to the cost of a 68mm IR filter...

    some info
     
  3. LERsince1991 thread starter macrumors 65816

    Joined:
    Jul 24, 2008
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    UK
    #3
    Damn... I was really hoping I could get a filter pretty cheaply and attach it to a lens... :(

    Is there a digital process on PS that can 'attempt' to replicate the effect?
     
  4. kallisti macrumors 65816

    kallisti

    Joined:
    Apr 22, 2003
    #4
    Three ways to achieve IR effects:

    1. On a DSLR, buy an IR filter that will fit your lens. Downside is that they block out visible light. Which means metering and focus won't work. You also have to guess at exposure times. Usually the exposure times are going to be fairly long, so this route requires a tripod. Be very careful not to look at the sun through them, since all the IR light is passing through and could fry your eyes (not positive about this last, but I wouldn't take chances).

    2. There are specialty shops that will modify the sensor on your camera (more specifically the filter that the camera maker installed to block IR light). Digital sensors are very sensitive to IR light, so without a blocking filter every photo would have the surreal IR look. Remove this filter and voila, white grass and leaves. It's possible to convert both DSLRs and some point-and-shoots. Once you do it though, the camera can ONLY shoot IR. So make sure you really like this style of photography.

    3. It's possible to fake the IR look in Photoshop.

    IR photography At the bottom of the page he has a link where he describes how to achieve the IR effect in Photoshop.

    Hope this helps.
     
  5. LERsince1991 thread starter macrumors 65816

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    Jul 24, 2008
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    UK
    #5
    Great thanks, i guess buying the filter will be too much for just a toy and modding a camera isn't an option so either photoshop or find some money :p

    Thanks for the good info and so fast :D

    I'll look into the PS alternative.

    Cheers,
    Luke.
     
  6. jampat macrumors 6502a

    Joined:
    Mar 17, 2008
    #6
    If you just want to play are you are moderately handy, find a used PnS. Pull it apart and there is a little piece of green glass over the sensor that you need to remove. Reassemble and voila, you have an IR camera for almost no money. If you find one of the canons that you can install the modified firmware on, you can even get raw files with it.
     
  7. ChrisA macrumors G4

    Joined:
    Jan 5, 2006
    Location:
    Redondo Beach, California
    #7
    It's cheaper and better to simply buy a film body and load it with IR film. You can buy good usable film body for less than $100. You can not "auto-focus" IR. It must be manually focused. Same with exposure, it must be manually metered so there is no advantage to newer cameras

    The only way to get true IR images with digital is to have your DSLR converted. They will remove the color mosaic filter, turning the camera into a black and white camera that is sensitive to IR.

    With film you have the option of using either black and white IR film or color IR film.

    Yes you can fake it in Photoshop. The simple way is to just kep the red channel. Then if you want more, subtracta bit of the green and a little of the blue. In PS to "subtract" you'd layer on a negative image and adjust the to 10 or 50% or whatever
     
  8. Mousse macrumors 68000

    Mousse

    Joined:
    Apr 7, 2008
    Location:
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    #8
    If you want a really cheap (dirt cheap) solution mod a web cam. The IR cut filter is easier to access and a piece of completely black negative serves as an IR filter. The major downside is it's low res.
     
  9. kallisti macrumors 65816

    kallisti

    Joined:
    Apr 22, 2003
    #9
    You are not totally correct. A converted cameras can be color or black and white, depending on the conversion. Also, you can both meter and auto-focus with a converted camera. This means it can be hand-held, you can compose through the viewfinder, and exposure will usually be close only requiring a bit of tweaking. Assuming you don't care about the cost, a digital conversion is by far the best way to go.

    LifePixel
     
  10. rajank macrumors newbie

    Joined:
    May 29, 2009
    #10
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    JSR Solution
     
  11. TheReef macrumors 68000

    TheReef

    Joined:
    Sep 30, 2007
    Location:
    NSW, Australia.
    #11
    Before you do this keep in mind you will need to replace the IR filter with something non filtering of equal size. Otherwise you'll end up with a point and shoot that cannot focus to infinite.
     

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