Originally posted by Macario I do not think so, so let's see if I get what you are writing
Do DSLR manufacturors have to produce big fast zooms? Yes, because they will generate money for them.
Yes.
Quote: Does a consumer have to buy one? No, if he doesn't need it.
Correct.
Quote: Do DSLR manufacturors say that you need big fast zooms otherwise your FF will not deliver. Yes, as it makes money for them.
I don't know that I recall a
manufacturer ever saying this in any kind of statement or ad - you tend to hear it internet forums, at camera clubs, etc, and it comes from folks who have bought the lenses already. In some cases they upgraded from a variable-aperture consumer zoom and are floored by that the output of that Nikon/Canon f/2.8 zoom (rightfully so,) and just doubt that a Tamron, Sigma or Tokina zoom could bring such optical quality. In some cases they may have had some experience with older primes on film, and prefer the versatility of the zoom, and the look the modern coatings bring.
At it's best, it's simply good-natured enthusiasm; at it's worst, lens snobbery mixed with a good dose of ignorance and/or lack of experience and/or purchase justification.
The manufacturer simply counts on X number of FF buyers buying these zooms, and benefits directly from the myth that you
need them to somehow gain access to FF's advantages. In my (and many other's) view, the size and cost of these lenses represent one of FF's main
disadvantages, good as they are optically.
Quote: Does a consumer have to buy one? No, as slower smaller zooms, or even primes might fit their budget and/or requirements better. And they will get results which will be more than good enough anyway.
Yes, very much so.
I have almost no experience with the Canon lens lineup, but at one point or another I've tried most modern Nikon lenses, and many older ones. The 14-24 2.8 is remarkable, but I felt it was like carrying a heavy, bulbous divining rod around. seemed very awkward to shoot. I really didn't like the thought of accidentally scratching that front element (it was borrowed.) The 70-200 2.8 VRII was very nice, but really is only about a 135mm on the long end for closer-in subjects, costs $2300, and didn't get me better results than the Tamron 70-200 2.8, although it had VR and focused very quickly. I saw nothing fantastic with the 24-70 2.8 - nice lens for sure, didn't beat the Tamron 28-75 optically, and was heavier.
The 16-85 is a fairly sharp, DX VR kit lens, 28-200 variants, 18-105, all the variable-aperture zooms I tried were equally mediocre.
The primes, though - with the exception of the 24 2.8 I tried - very good, very exciting to shoot on FF. The one Nikon zoom I still consider buying is that 14-24 2.8 despite it's drawbacks.
.
Last edited by jsherman999; 08-11-2011 at 08:14 PM.