Lenrentals puts the Canon 70-200 F4L IS II through it's paces, and even tears it apart for fun
Lenrentals carried on their tradition of getting new lenses in stock and getting the itchy fingers to take it apart and see what makes it tick.
What did Roger have to say?
First of all, this is, as we would expect, a very well built lens with robust roller bearings, large brass collars, heavy metal keys, and good weather sealing. Some non-Canon fanboys are going to love crowing about an IS unit breaking early, but it was during a rental, and well, IS units break some. This is the same unit used in most recent Canon lenses, and they are more reliable than most, honestly.
We have some hints, and a lot of Roger speculation, about how Canon is getting lenses with such low variance. Here’s what we know: Canon has more optical adjustments than most lenses, not less. So while they may have tighter tolerances (I have no clue), the key seems to be more in a careful optical adjustment of compensating elements than anything else.
See the entire article here, with lots of pictures and Rogers wit.
And that's not all, if that wasn't enough they put the poor Canon 70-200 F4L IS II through their MTF benchmark and had this to say;
It’s really, really good. It’s extremely consistent with low sample variation. Optically it’s everything I hoped for. Actual reviews are starting to trickle in, and if the IS and autofocus are as improved as the optics, this should be a home run for Canon.
Read more about it here, with lots of MTF graphs and comparisons.
The Canon 70-200 F4L IS II at a glance;
- EF-Mount Lens/Full-Frame Format
- Aperture Range: f/4 to f/32
- One Fluorite Element and Two UD Elements
- Super Spectra Coating
- Ring-Type Ultrasonic Motor AF System
- Optical Image Stabilizer
- Internal Focus, Focus Range Limiter
- Weather-Sealed Construction
- Rounded 9-Blade Diaphragm
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