Say: In today's "zoom" a continuous aperture 1:2.8, the maximum - and that is remarkable, in contrast to the 3 Series and 6 lying between Aperture "Zoom" lenses.
He Zoom 2.8 - 2x400Watt 1x 200W - that's it, the picture ... with "normal sunlight / Outdoor" - zero Problemo
With nem 3 - he must serve 6 Zoom and 2x400 watts ne ne 600erWatt or accumulation s.klein spotlights to 30 - 60 watts.
Conclusion - Depending on the "shot" requires a degree of "fast" optics - can I get my "shot" in "quiet" stage - I sokann synonymous peaceful use something more light and choose one of something "better" optics.
Someone runs through darker corridors anywhere in DownTown I want Christelle Images of Him .... I need ne "fast" optics with a lot of Focal.
Ich hab nen Schwenck will slow over the glass table the glass which bears the lipstick imprint of her lips are in the focus of the background to the DoF verschwienden ... I have time, I can safely Optics somewhat "slower".
Who does he ne 1:2.8 zoom lens can be - appreciate once happy -. (On the successor to the 70-200Canon I'm curious)
MfG B. DeKid
** PS: If you look at times Zeiss or Leica ... The'll notice that the optics of the Aperture ago are not so "Intense light such as those of competitors - but in front of resolve to end the right place! Quasi - Aperture is not everything in life! **