When responding to Jez' questions about possible µ4/3 kit for his wife, I nattered on a bit about the flexibility,
usefulness and quality of the Oly and Panny long-normal zooms, 14-150 and 14-140.
The subject line is double duty; the quad of a Maine college on a perfect day a month or two before the Fall of snow,
and an idyllic day for us, visiting our friend Jef, who lives just a few blocks from these scenes - just a week before
Carol's Fall cut our vacation short.
I think these few shots illustrate how effective such a lens can be, casually carried on a GM5, in this case.
<http://zone-10.com/tope2/main.php?g2_itemId=22124>
The wide view is a four shot stitched panorama (maybe 150°), with Jef, in his usual high energy mode, heading off to the
next thing.
The others are all at the long end, 140 mm. I've included 100% samples of the people pix, in one case, moving the
subjects around for didactic purposes.
Yes, they are "sharpened". As I, and others far more authoritative, have written, with various sorts of illustrations,
digital sampling loses detail, including digital sampling using a camera sensor, of the image formed on it by a lens.
Then, Bayer arrays are about 50% efficient at color resolution.
So by the time we see the image on our screens, a great deal of the resolution of the image produced by the lens has
been 'lost'. That this is true is easy to prove using the HD mode of E-M5 II and E-M1 II. Take the HD image, downsize it
to match the pixel dimensions of regular, 16 MP image captured as part of HD, and there is lots more clear detail in the
downsampled HD version. I was quite startled at the difference when I first tried this. My conclusion is that at least
most of the AF µ4/3 lenses are considerably out-resolving the sensors systems of contemporary µ4/3 cameras; the ones we
think of as sharper doing so by a greater amount than others.
As it happens, the deconvolution algorithms in FocusMagic are rather good at recovering a fair amount of this detail,
particularly with the long end of long µ4/3 zooms. Long story ended; I think these images @ 140 mm are inaccurate only
in that they are less than perfect representations of the IQ of the lens itself.
L. W. Moose
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What if the Hokey Pokey *IS* what it's all about?
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