I rest my case for a new version of the 400 F5.6 ... it's coming in 2nd as the most popular lens.
New electronics. USM and IS ... latest glass coatings, perhaps a tweak here or there to the optics, a lick of new paint .. oh and the most important issue I think is a closer min focusing distance in line with the 300F4 or the 100-400 and it'll be a winner.
I'm stuck using a 70-200 2.8IS and at times a 2xIII, but wanting the "prime experience" with a clean, light, straight 400.
Not that keen even on the new 100-400, but may only get it for it's close focusing .. if it's the same as the old one at 1.8m. I don;t really need to lug around the extra stuff, as I really just want 400mm
Does sales have to slow down on a lens for Canon to think about a replacement ?
It still seems to sell well ... a friend of a friend only posted two days ago a pic of his new 400F5.6 sitting on the front seat of his car driving home from the shops after just purchasing it.
So for me it's a toss up of the closer focusing of the 300F4 or the reach of the 400F5.6 ... but the bigger issue is both lenses are so old they both are long overdue for a re-vamp ... and I want the new re-vamped models, not going to buy the older version no matter how good they still are, they are due for a new version of both.