Last weekend the Lens Hood lock on the 400mm decided to part company with the hood itself. Not a major problem, usually, except that it threw the circlip that holds the wedge (the black bit) in place & the wedge went walkabouts, So I get online to find a replacement, except that Canon don’t supply them anymore, despite the fact it is a common part across a number of lenses. So the search begins, after finding a number of ludicrous prices for the part, the most was some £600, although that did also include one of the screws, individually priced at £450.00!!!!!!!!!. A replacement complete lens hood is £700! Anyway frustrated by the prices I went and hunted in the boot of the car, on the off-chance that when it went ping it fell in there, rather than in the gravel carpark I believed it to gone.
So having found the wedge all I need now is a 2mm Circlip, so I have ordered a box of various sized clips (also known as E-Clips) which should be here tomorrow. I will also order a third party replacement hood from the USA, that will also work with the later version that I will be upgrading to later in the year.