I recently returned to shooting 35mm again and came into an EOS-1 (1st-gen) which I've been shooting with my Nifty Fifty (fun!), but found myself missing the red focus dot and wanting an IS lens, specifically the EF 35mm f/2 IS and EF 100mm f/2.8L IS Macro. So I've been thinking of upgrading to an EOS-1N to get my red dot back and saving up for this rather expensive (but soooo lovely) Canon glass, when I came upon this bit of info on mir.com: "There is a slight compatibility problem with EF lenses having the IS (Image Stabilizer) feature on early analog EOS models as the camera shake correction feature may not work well on them." Can anyone confirm this? If so, is this specific to 1st-gen EOS-1 only? I guess what I'm really wanting to know is: does IS functionality work properly with EOS-1N?