What tricks is Canon playing with the mm of its Lens?

[ShutterbugJohan]

Thanks a lot for your answer. It makes sense.


My only objection is that if the third reason, "Marketing" is playing its tricks, then the sites that test the lenses, should in addition to all the other parameters checked, check the ACTUAL length of the lens. This is the only way to keep companies' marketing departments in-line.
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Pop Photo (www.popphoto.com) tests actual focal length. They also test the effective aperture. (I think.) :-)


Hope this helps.