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Perils of Infrared Photography

Started Jun 24, 2016 | Discussions thread
northcoastgreg Regular Member • Posts: 139
Re: So I'm curious then..

Lew wrote:


My thought is that 720nm should be able to give some degree of result since 750nm clearly gives a result.

If it would not, please explain why, I'd like to understand.

I'm not sure I understand it either. My converted E-PL1 has a 720nm filter (placed in front of the sensor). I chose it intentionally because it did allow for a little non-infrared light to sneak in, which I was told was better for false color IR, because it allowed more information to reach the sensor, hence more information to work with in post. All the 720nm does in my case is allow a handful of aquish/blue tones to sneak through. As an example, consider the following image:

The car in the picture is "peacock blue" (a blue slightly tinged with aqua). Once I swap the blue and red channels, it turns to red. If I were using a filter that blocked out all the visible light and only let infrared light in, the car would be some kind of light bluish color. But the rest of the image would not be significantly impacted.

 northcoastgreg's gear list:northcoastgreg's gear list
Pentax K200D Olympus PEN E-PL1 Olympus OM-D E-M5 Pentax K-5 IIs Pentax smc DA 15mm F4 ED AL Limited +28 more
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