Canon discontinues one of the best Macro lenses ever!
Canon MP-E 65mm Ultra-Macro Lens - YouTube
MP-E65mm f/2.8 1-5x Extreme Macro Lens | Canon Australia
Review: Canon MP-E65 f/2.8 1-5x Macro door Thijs Schouten Fotografie
Used Canon MP-E 65mm f/2.8 1-5x Macro | MPB
Macro photography focusing rails for stacked focus, especially with Nikon macro lenses or Canon 65mm MP-E f2.8 macro lens with 5X enlargement | Digital Photography