Recently while shooting some new stuff for BaaBar I took a quick shot with the 4×5 on Portra 160nc. Thought it would be interesting to compare to the 5D. Not a particularly scientific test but it shows some interesting stuff. 5×4 is at the top by the way.

Check out the differences in the red light boxes, the Canon has some weird stuff going on were you can see the placement of the tubes as yellowy hotspots! I’ve not been able to get rid of them unless the image is massively underexposed. I’m guessing its to do with the spectral response of the 5D’s chip and its seeing more than the naked eye!

Click the images for larger versions on Flickr.