Ok the announcment says "The EF 300mm f/2.8L IS II USM lens carries on this tradition with improved image quality, lighter weight, improved Image Stabilization and enhanced durability"


My 300mmF2.8l and 500mmF4.l are both razor sharp now. Is there going to be another level of sharpness and qualitythat we can expect? Will my fingers bleed when I pickup these lens because they have gotten to sharp?Lighter weight would be welcome but for a few thousand dollars I can deal with an extra pound.


The extenders look the most interesting. I wouldn't mind an extedner upgrade if itimproves quality.