Canon 350D and IR

Discussion in 'Beyond the Basics' started by conor, Sep 6, 2007.

  1. conor

    conor TPF Noob!

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    I have been trying to use an IR filter on my 350D without any success.

    Having tried to investigate why this should be i have found out that the 350D is not capable of taking IR shots. It has been said that you need to remove the block on the IR settings and that you cannot take ordinary pictures after doing this.

    Can anyone confirm or deny this?
     
  2. jeeper

    jeeper TPF Noob!

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    Sure it's capable, I do it all the time. Maybe you're not using a long enough exposure?

    There is a filter on top of the sensor that blocks most IR light, but not all of it. With a long exposure & an IR filter it works just fine.
     
  3. gizmo2071

    gizmo2071 TPF Noob!

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    You'll need to use the camera in fully manual mode.
    Totally ignore what the in-built exposure meter says.
    I'd suggest trying f/8, 8secs, iso200/400.
    That should give you some an exposed image of some form.
    Then it's up to you to tweak it, either for more or less light.
     
  4. jeeper

    jeeper TPF Noob!

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    I usually shoot with the aperture wide open. Some lenses show "hot spots" (I know the kit lens does, not sure which others), small apertures will make the spot bigger.

    [FONT=Arial, Arial, Helvetica]
    There are some good tips on the website above, and there are plenty of other similar websites. Just google "IR photography" or something like that, I'm sure there will be tons of info.
    [/FONT]
     
  5. JamiePocock

    JamiePocock TPF Noob!

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    NO and Yes
    The 350D does have an IR cut off filter that cuts light of above 750nm
    This makes it hard to take infrred images with IR filters because your IR filter lets light in around about 720nm and above.
    This means you only at best have 30nm of light to record to your sensor.
    Meaning you need a very long exsposure say 30 to 40 second which if taking pictures of landscapes with trees a very slight breeze in the trees will resule in a blurred landscape. Also noise comes in to play, images taken with this setup are full of noise.

    Best option is to get one that is IR converted, the hot filter that covers the sensor would have been changed.

    Having a quick look I found one here on ebay already done http://cgi.ebay.co.uk/Canon-350d-in...ryZ31388QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
     
  6. doenoe

    doenoe TPF Noob!

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    i dont think you need a camera that is converted. I use my 350D for IR and i think it works great. Indeed you need some longer exposures (2 to 4 seconds), but it works. This goes for nice sunny days offcoursre. It also helps if there is no wind then.
    I always use the 50mm 1.8 mkII. Works great for IR, cant see a hotspot when using that lens. You can click the link in my signature and click Infrarood then. Then you can see what i did shoot with the Hoya R72, 50mm 1.8 and 350D.
    And the noise, you can work with NeatImage to get rid of that :)
    Offcourse its not true IR, but for digital IR it works like a charm.
     

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