On Monday, July 16, 2018 at 1:01:55 AM UTC-4, RichA wrote:

I often wondered how FF wildlife shooters coped with needing huge lenses just
to fill-frames with wildlife shots, that kind of thing.

When its the only tool for the job, its the only tool for the job.

Slower, lighter versions of lenses were treated like the poor relations by
the makers like Nikon and were rarely as optically-good as the fast f/2.8's
which is counter-intuitive when you know about lens manufacturing.

Yet ... It still comes back to tolerances and that costs money.


That may changing with current camera's exceptional high-ISO performance
maybe not needing f4-f2.8 speeds from lenses as much as before.

It may, or may not. For example, Canon's f/4-5.6 75-300 DO IS is pretty much
what you're asking for, but it seem to have become all that popular of a lens.
Perhaps reading some reviews will reveal to you why.

-hh