I received an email from someone claiming they were involved in the
testing of this lens.

– Push/Pull design gone
– Lens is faster at f/4
– New coating ala the 24L
– 4 stop IS
– Weather sealed
– “Sharpest zoom I've ever used.”
– Announcement Feb. 2009

This has been a constant rumor for the last two years. We'll see what


Sent from my iPhone


  1. I’m really hoping this is a production item. I am looking at the 500 f/4, but would love an awesome twist zoom to fill the gap between it and my 70-200 2.8 IS – I have used various 100-400L ‘dust pumps’ and I am not 100% happy with it.

  2. @ Mattia,

    The Dutch Canon website has a typo for the 100-400. If you look at the partnumber it’s just a normal 100-400.

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