11-29-2010, 06:21 PM
[quote name='Brightcolours' timestamp='1291050507' post='4573']
Funny man. You can stop down a f2.8 zoom exactly like a f5.6 zoom, obviously.
But contrary to the f2.8 zoom, you can't open up the f5.6 zoom more. So... with the f2.8 zoom you can do exactly the same things. And more.
Do you really buy lenses for different "jobs" with a minimum aperture in mind? (Of course you don't, but your rhetoric leads that way).
[/quote]
hint: slower lenses = greater zoom range = no lens change necassry in the decisive moment. Faster lens = less zoom range = more lens change= decisive moment may be gone after you have changed lenses/ aderse external conditions may sometimes not allow lens change(pouring rain, very dusty). So again, you cant do "more" with a faster zoom but you can do different things. What you need is a matter of your shootinmg style. There is no general better or worse here.
In addition, a 15-85 may replace three or four primes focal length wise. If you need to travel light the slow zoom may be a better ticket than the primes, if you are shooting landscapes with lots dof or reportage style in good light.Horses for causes, not primes and fast zooms for everybody. I hate communism.
Funny man. You can stop down a f2.8 zoom exactly like a f5.6 zoom, obviously.
But contrary to the f2.8 zoom, you can't open up the f5.6 zoom more. So... with the f2.8 zoom you can do exactly the same things. And more.
Do you really buy lenses for different "jobs" with a minimum aperture in mind? (Of course you don't, but your rhetoric leads that way).
[/quote]
hint: slower lenses = greater zoom range = no lens change necassry in the decisive moment. Faster lens = less zoom range = more lens change= decisive moment may be gone after you have changed lenses/ aderse external conditions may sometimes not allow lens change(pouring rain, very dusty). So again, you cant do "more" with a faster zoom but you can do different things. What you need is a matter of your shootinmg style. There is no general better or worse here.
In addition, a 15-85 may replace three or four primes focal length wise. If you need to travel light the slow zoom may be a better ticket than the primes, if you are shooting landscapes with lots dof or reportage style in good light.Horses for causes, not primes and fast zooms for everybody. I hate communism.