Why Can't Canon Offer a 24-105mm f/2.8 L II USM

Started Jun 17, 2012 | Discussions thread
Great Bustard Forum Pro • Posts: 38,906
Re: Because you could neither lift nor afford it...

David J. Littleboy wrote:

Why Can't Canon Offer a 24-105mm f/2.8 L II USM?

My take on the 24-105/4.0 is that 24mm is too wide.

Think about it: a 105mm f/2.0 lens would have a 53mm wide aperture. OK, the front element would be a bit larger (the 100/2.0 takes a 58mm filter). But the 105/4.0 takes a 77mm filter. That's because it has to do the extreme WA of 24mm.

So a 55-110/2.0 IS should be completely possible and only slightly larger than the 100/2.0, say a 67mm filter size.

Is the 70-200 / 2.8L "only slightly larger" than the 200 / 2.8L?

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