Currently being tested?
“We're told that at the SWPP convention in the UK, Steve Allen during his presentation stated that he is currently testing the pre-production version of the Canon EF 24-105mm f4L IS USM Mk II lens. He had the 5D Mk II camera pre-production model since November 08.

From [NL]

Keith makes the obvious point… NDA?

I've heard nothing about this lens outside of this in a long while.


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  1. If anything needs to be upgraded its Canon’s quality control. I’ve had two copies of the 24-105 – one was very poor away from the centre, the other wasn’t.

  2. yep….they deffinitely need to fire their QC dept. and start over… there are too many high end lenses that have too many bad copies floating around… for those prices you really need some consistency… the good copies that are out there are proof that the designs aren’t flawed per se… its just a matter of sample to sample variation in the execution of those designs (the 24-70/24-105/100-400 come to mind)

  3. why replace this lens? If replace the 24-70 f/2.8 with image stabilization, is the good ideia!

  4. Craig +1

    This is indeed silly. This may not be a popular thing to say, but most of the QC issues are probably due to people who don’t know what they are doing (read: UE). Don’t mean to be harsh, but you hear this whole QC stuff all the time. Just pick a lens, the 24-70 gets a fair share of them as well.

  5. I just got this lens (24-105 4L IS USM) and compared it to my Canon 28-135 IS USM. In short, yes there is a diference in sharpness but one must look good and long. Is it worth the $600.00 differene? That depends on your chemistry. How fanaic are you about tack sharpness? I feel, that the difference should e few hundred but 600.00?

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