uOpt wrote in post #15491816
Just idle thoughts (home sick/flu):
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?
I think that one stop may not always be as valuable as another. For example, going from f/8 (telephoto + TC combo) to an f/5.6 lens is a really important stop on a lot of Canon bodies because it is the difference between AF or not.
Also on the 'light gathering' continuum, a change from say f/5.6 to f/4 as a maximum aperture may be more important than a change from f/2 to f/1.4 as the DOF at those very large apertures may not be usable.
So the faster the absolute fastest aperture of a lens, the less situations that having the lens wide open for will be usable. I probably use f/2.8 a lot more than f/1.2 overall.