On 1/31/2012 6:04 AM, Joel Wilcox wrote:
> On Mon, Jan 30, 2012, at 02:59 PM, Moose wrote:
>
>> First, let me say that this is not a macro comparison.
> Sure it is. Zuikos 50/3.5 and 90/2, Nikk*r 55/2.8 -- all considered by
> earthlings to be macro lenses.
Let me restate: It is not a comparison of macro performance. It is a comparison
of lenses designed to perform well from
infinity to 1:2 at a non-macro magnification.
I got too wordy. Let me instead ask a question. If these tests were accurate
representations of lenses you could use,
which would you choose for non-macro use?
Distortion = none | Distortion = very slight pincushion |
Distortion = none
Aperture Center Corner Contrast | Aperture Center Corner Contrast |
Aperture Center Corner Contrast
f/2 A- B High | |
f/2 B+ A- High
f/2.8 A A- High | |
f/2.8 A- B+ High
f/4 A A High | f/3.5 B- C Mod. High |
f/4 B+ B V. high
f/5.6 A A- High | f/5.6 A A Mod. High |
f/5.6 A- B+ V. high
f/8 A- A- High | f/8 A+ A High |
f/8 A- A- Ex.high
f/11 A- A- High | f/11 A A Mod. High |
f/11 A- B+ V. high
f/16 B+ B+ High | f/16 A- A- Mod. High |
f/16 A- B- High
It's obvious what lens is in the second column, the others perhaps less so.
Assuming this was paired comparisons, I
would go for column one for digital, as I can easily control contrast in post,
but would prefer less in the capture, to
avoid clipped ends of the histogram. So I'd go for resolution over contrast.
<big snips>
> As you said, lens design is a series of compromises. The Z90 has its
> compensations even if you can't skin a raccoon with it. A Tamron 90/2.8 in
> an EF mount, however, is on my short list if Canaan FF ever starts to grow on
> me. :)
It's a very nice lens in many ways. Relatively light for what it is. The
push-pull MF-AF switching is nice, although not
as nice as the Canon full time AF-MF lenses. A better field lens than studio
macro lens, in a way. It is actually
sharper at f2.8 than f8 at 1:2, which means some interesting choices between
sharpness and DOF
Macro Argumentation Moose
--
What if the Hokey Pokey *IS* what it's all about?
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