I always shoot Raw photos on my Modified EOS 5D. The interesting thing is the Raw is interpreted differently between Canon's built in software and Photoshop. See images below
Digital Infrared Modified Canon EOS 5D
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All pictures copyright: Robert Chisholm
Canon   Photoshop

Fish Creek Provincial Park

Camera: Canon 5D Modified for IR

Lens: EF 100-400mm F3.5-5.6L shot@250mm

Filter : None

Shutter: 1/250 sec

Exposure Compennsation : + 1 2/3

Shot at: F8

Modified in Photoshop

Swap Red and Blue Channels

Autocolor

Brightness/Contrast +40 Brightness (Canon only)

Canon raw file set to monochrome

 

Photoshop raw file set to Greyscale