Hi mirko

These are all taken with a camera that has no IR blocking filter in front of the sensor. If you use a standard camera with this filter you’ll just get an image that is very red, with no IR effect.

I did a comparison recently between use of a converted and unconverted camera for infrared work: Infrared photography – Unconverted vs Converted camera with different IR filters comparison. If you look at the image there that was taken with the 680nm filter (bottom right corner of the comparison image), the Hoya 25a filter will give somewhat similar results.

Regards

Dave

Hi Kyle

I think the colour cast depends on your white balance. The false colour images in this post were obtained using just a Hoya 25A Red filter. This filter passes both visible red as well as infrared light, which makes it more suitable for false colour photos. If you use a strong infrared filter, such as the B+W 093, then you will only be able to get black and white (or single colour tinted) images as it doesn’t pass any colour for the camera to record.

For changing the colour in the photos, I usually play around with the white balance. For the ‘traditional’ false colour IR photos, I set the white balance on grass / foliage. Then I use the channel mixer in Photoshop to swap the red and blue channels.

Hope that helps!

Dave