Maiaibing said:
Would love it too. However, Nikon model has severe bokeh issues. If Canon can solve these it'll be a massive success.
Here's a wake up for you and most other 'hardcore'-type photographers:
99% of people don't look at things which aren't in focus, and bokeh does not matter.
Just like how sensor colour depth and tonal range doesn't matter. Just like how APD filters don't matter. Just like how 1:1 pixel-level sharpness doesn't really matter as long as
something in the overall image is sharp.
Plenty of the best-selling lenses ever do not have good bokeh. Plenty of the most popular photos ever have nearly everything front-to-back in focus anyway. It doesn't matter if you're talking about the widest landscape lens or the tightest ultra-telephoto wildlife lens, or anything in between. People aren't looking at the blurry mush. They look at the person's face, or the food on the plate, or the bird, or the sunlight falling across the meadow, or whatever it is you've photographed.
Yes, the Nikon has a fresnel element which makes bokeh drop a little and background highlights take on busy ringlet patterns at smaller apertures. And nobody who sees any photo taken with it will ever care, and Canon could put out a similar lens with the exact same results and it'd be just as popular; and if they can, they absolutely should. (Though they will be hard-pressed to improve on the current 300mm f/4 IS other than in IS effectiveness and AF speed.)