J
Jettatore
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sarangiman said:I'm not quite sure what to do with those comparisons, with widely different settings. Were you handheld or on a tri-pod for these? Something(s) seems a bit off, I would say hopefully non-offensively, that this samples makes both lenses seem unimpressive (please don't take any offense to that, as none is intended).
What exactly do you mean by widely different settings? If you speak of the flare on the Canon lens -- that's simply b/c the sun had set further during the time between shots on the Nikon vs. the Canon. But sharpness is still quite easy to judge. If you're talking about my different apertures-- that was the whole point: that at f/2.8 the Nikon lens exceeds f/11 performance on the Canon. Additionally, I posted both f/2.8 lenses.
These are all taken on a tripod.
I also don't see anything unimpressive about the Nikon shots... care to clarify? The Nikon shots are pretty much sharp edge to edge!
Your shot looks good, but it doesn't speak to the edge-to-edge performance of the lens. You have continually varying distance of subject from the bottom of the frame to the top, with not much/any detail for comparison at the top (mostly just sky). My tests were designed to evaluate the flat field performance of the lens, something of interest typically to landscape photographers. And my tests are hardly showing anything surprising or new for those of who've actually compared the performance of the Nikon 14-24 against lesser lenses. For example, the guys over at 16-9.net.
Also keep in mind: often a wide angle lens can't maintain focus at infinity across the field (when you've intended to focus at infinity) because of field curvature. This'll often result in closer subjects coming in to focus around the edges if you focused the center at infinity. Therefore your image with subjects of varying distance is not indicative of the ability of the lens to focus on distant landscapes across the field-of-view.
Also remember that a 12MP camera will not show defects as well as a 22MP camera, or 36MP, etc.
Specifically there is a very large difference in shutter speeds between your two comparisons, any little movement or instability on your Canon side of testing could easily impact sharpness to a much larger extent then the Nikon side of the test (I see that all of the cars have motion blur on the Canon test which had a much slower shutter. That's why I asked if you were handheld or not. Also there seems to be a lack of clarity in detail to an extent that I find uncharacteristic of the 16-35 from my own personal use.
I suspect perhaps in camera noise reduction as well as perhaps .jpg shooting are being used (or some other sort of in-optimal post processing), but that's just a guess. Something about the characteristics of the pavement suggest some sort of processing/filtering going on that isn't working out too well. I like to have Noise Reduction in camera turned off completely and shoot in RAW personally.
The Nikon shots in your test are sharper than the Canon shots, but on it's own, outside of this comparison I wouldn't call those results 'sharp'. Chromatic aberrations are all over the shot, hampering it's sharpness to my eyes. To me it's apparent on the street pavement details as well as the safety rail (look for reddish tints if you are having trouble seeing what I'm seeing, it's noticeable on the shadows of the safety rail and elsewhere, at least to me). There's also a lack of contrast in fine details from this image, which comes unexpected at ISO 100.
Perhaps each lens needs to be learned and set individually to pull out it's real world strengths rather than trying to compare them in any sort of controlled or uncontrolled way just to make them compete.
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