Sporgon said:Maiaibing said:Agree. Shooting the 135L and 70-200 IS L II side-by-side the zoom cannot compete with the prime lens' isolation and bokeh quality wide open. This is even true if you shoot the zoom @200mm. No pixel peeping needed.
However, once you stop down, its a much closer call, among others due to the zoom having more rounded focus blades than the prime <f/16 (both need an upgrade here for sure to 9 fully rounded).
Not convinced you're right there; in a genuinely blind test of different subjects I recon it is difficult to reliably pick out the 135 @ f2 against the zoom at 135 f2.8, or certainly 200 f2.8.
I'm not a fan of ultra shallow depth of field close up, or rather ultra wide apertures close up. At a greater distance that is another story but then the performance of the lens wide open has to be in another league too.
To me the advantages of primes are the fact they are smaller, lighter, changing the handling of the camera, and also generally cheaper. I think many buy the current 135 because it is now attractively priced and is quite a bit smaller than the zoom. I can see the new 135 IS being considerably more expensive and larger to boot.
If you shoot both the 135L and the zoom wide open - even with the zoom @200mm - there is zero doubt whatsoever which is which (if there is a meaningful background for evaluating the bokeh). 135L wins hands down. Not even close.
I did extensive side-by-side shoots with the two and the 70-200mm f/4 IS L to evaluate the bokeh at all settings and with a range of backgrounds.
And yes, I'm a bokeh freak. ;D
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