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| p.2 #14 · There is 24-105 f/4.0 L IS and now 24-70 f/4.0 L IS ? I'm confused, don't you ? |
It is not unusual to have "overlapping" of lenses. Canon have a bunch of 24/28-85/105/135 lenses and too many 70/75-300 to count (with or without USM, with or without IS, different apertures, etc.) -- admittedly they are non-L "consumer" grade lenses, but in the L-lineup zooms are more sparse to begin with, and what we are seeing is probably the beginning of a plethora of different choices in the "general purpose" range.
The way I see is:
24-70 f/2.8 (and hopefully eventually with IS) -- high-quality, top-of-the-line, large aperture (and expensive!) zoom for pros and people who need f/2.8
24-70 f/4 IS with macro -- smaller aperture, high optical quality and compact zoom with macro capability for general purpose use
24-105 f/4 IS (and eventually the "II") -- smaller aperture, longest focal range for people who need the focal range for general purpose use
The 24-105, being a lens with a longer zoom range, will always compromise somewhat on optical quality, but for people who want the longer range, it is a compromise they will be willing to make.
Also, with these offerings, you can mix-and-match to build your lens kit, depending on your taste in photography, for example:
3 f/4 lens combo for people who need super wide-angle:
17-40 f/4, 24-70 f/4 IS, 70-200 f/4 IS
2 lens combo for those who lean more toward telephoto:
24-105 f/4 IS, 100-400 IS (hopefully this will get updated soon too)
3 lens combo for those who want maximum focal length coverage:
17-40 f/4, 24-105 f/4 IS, 100-400 IS
More choices are always a good thing!