"Robert Meyers" <email@example.com> wrote in
> Ok. Here is a weird one for you all. I am considering the purchase of an odd
> array for my kit. I am thinking of a 135mm f/2 + EF 1/.4x II and EF 2.0x II
> extenders. End result 135mm f2, 189mm f2.8, 270mm f4, 378mm f5.6. All about
> the same space (okay, maybe an inch or so longer) and weigt as a 70-200mm
> I figure the whole kit would only be maybe $100-200 more than a 70- 200mm
> f2.8 and cover pretty much all the range I needed it for, while also serving
> up as a long range package.
> I would use it for the following (order of importance):
> General Telephoto
> Comments, suggestions? Guidance here welcome.
With the 1.4X, you *may* get acceptable performance wide open, with
good performance *possible* one stop down, but only with the best
lenses, converters, AND matching; with the 2X, you will be lucky to have
decent performance by f5.6 (f11 effective). Probably better: the 1.4X on the
70-200 f2.8, which may perform well by an effective aperture of f5.6...