I am thinking of selling my 100/2.8 macro to buy an 85/1.8 with the kenko extention tubes to make up for the focusing distance.Does any one have any experience with this combo?I'd like a lens that can double as nice portrait telephoto. I find 100mm to be too long.EXIF data available. Clickhereto show/hide.Camera-Specific Properties:Camera SoftwareAdobe Photoshop CS2 WindowsImage-Specific Properties:Image OrientationTop, Left-HandHorizontal Resolution314 dpiVertical Resolution314 dpiImage Created2008:02:19 00:19:07Color Space InformationsRGBImage Width640Image Height444