The also did a monochrome only version of these cameras EOS-DCS-1M, DCS-3m, DCS-5M. I think I’m correct in saying that it’s the only Digital all monochrome camera that Canon has ever made. They were also available in, infrared Monochrome versions as well.
EOS DCS-1. Sensor Size, 27.6 mm x 18.4 mm, 3060 x 2036-pixels
Un-acquired image file size: approximately 6 megabytes (MB) for each image. Acquired image file sizes: approximately 18 MB for each color image acquired normally at 8-bit acquire (and 36 MB when 12-Bit Acquire is on), and 6 MB for each monochrome image.
EOS DCS-3. Sensor Size, 20.5 mm x 16.4 mm, 1268 x 1012-pixels.
Un-acquired image file size: approximately 1.3 megabytes (MB) for each image. Acquired image file sizes: approximately 3.9 MB for each color image acquired normally at 8-bit acquire (and 7.8 MB when 12-Bit Acquire is on), and 1.3 MB for each monochrome or infrared image.
EOS DCS-1. Sensor Size 3.8 mm x 9.2 mm, 1524 x 1012-pixels.
Un-acquired image file size: approximately 1.5 megabytes (MB) for each image. Acquired image file size: approximately 4.5 MB for each color image acquired normally at 8-bit acquire (and 9 MB when 12-Bit Acquire is on), and 1.5 MB for each monochrome or infrared image.
More information at
http://www.mir.com.my/rb/photography/companies/Kodak/index2.htm