Just idle thoughts (home sick/flu):
Let's see, here's #1:
That the 200mm f/2.0 is forum praised as the ultimate portrait lens (on FF) and that it is "obviously" worth going through the trouble of creating the required space towards the subject...
... while every time that the subject of the 135 f/2.0 for 1.6x crop users comes up it is shut down with "way too long".
Another one, #2:
How is it that everybody gets all hyper about a single f-stop when it comes to upgrading zoom lenses from f/4 to the f/2.8 bag pigs, perfectly willing to hire mules and sherpas and look like a dork on the street...
....while the same improvement of a single f-stop is tossed as "not required" when discussing upgrading the f/2.8 zooms to f/2.0 primes.
Anybody has similar observations?


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