DJL329 said:Why do you have to ruin my dreams? And so quickly?!? ;D Oh, well, that's what I get for not doing the math...
LOL.
One more point to drive it home - compare a hypothetical 400/4L IS to the existing 400/4 DO IS. What diffractive optics do is, in effect, bend the light more sharply. That means a DO lens can be shorter than an non-DO counterpart (the 400/4 DO is shorter than the 300/2.8), but it still needs the same diameter, and it won't necessarily be much lighter. It could be less expensive, since Canon's DO lenses do seem overpriced for what they are.
Upvote
0