Canon 400D/Rebel XTi Infrared Photography Tests

Discussion in 'Canon' started by Wayne J. Cosshall, Dec 4, 2006.

  1. Wayne J. Cosshall, Dec 4, 2006
    #1
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  2. Wayne-

    Can you explain why you chose the green channel for your sample photos
    at the end?

    It seems clear to me that your red channel had the greatest sensitivity
    to IR, it was just over exposed. Naturally it won't make as good a
    print as the other channels because of the overexposure.

    If you exposed for the red channel instead of the green, your exposure
    times might not be as long.

    Fred
     
    Fred McKenzie, Dec 8, 2006
    #2
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  3. Wayne J. Cosshall

    Mike Warren Guest

    I don't know about Wayne, but the most common reason for favouring the
    green channel is that there are twice as many pixels used in the green
    channel with Bayer sensors.
     
    Mike Warren, Dec 8, 2006
    #3
  4. I would have went with the blue. To each his own.

    LJC
     
    Little Juice Coupe, Dec 8, 2006
    #4
  5. Hi Fred,

    What you say is true, though exposing for the red channel would have
    probably only gained me a stop in shutter speed. Still a tripod job.

    Since I was testing the camera I wanted to see the spread in exposure
    across the channels. If I was shooting IR with the 400D all the time I
    would be more careful to exposure for the red channel.

    Cheers,

    Wayne
     
    Wayne J. Cosshall, Dec 8, 2006
    #5
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