I don't wish to sound harsh, but the odds are great that none of you is a good enough photographer that a change in gear would make the slightest difference. Each system is used by large numbers of extremely talented, highly paid professional photographers and I doubt that anyone, looking at the images, could tell who uses which. Rather than spending large sums of money on this stuff, a modest investment in time (a few weeks off from a regular job, to focus on photography) would seem a better investment.
JC
John,
That
is a bit harsh. But never mind. I can be a bit harsh myself sometimes.
I think we all have to accept that there's a distinction to be made between an interesting shot with artistic merit, and a technically perfect shot which lacks universal appeal and is a bit boring.
However, I think it's true to say that photos which may appear uninteresting to some or even most of us, are probably interesting to the person who took the shots and/or the people who may feature in the shots, so it's reasonable for such photographers, or snap-shooters if you like, to be concerned about the sharpness of their images.
Ansel Adam's quotation, "There's nothing worse than a sharp image of a fuzzy concept" does not quite make literal sense (although I can see it's meant to be a metaphor). There
is something worse; a fuzzy image of a fuzzy concept.
In order of preference, in general terms (there are always exceptions), I would place the 'sharp image of the sharp concept' first, followed by the 'unsharp (or technically flawed) image of the sharp concept' second, followed by the 'sharp image of the fuzzy concept' third, and the 'unsharp image of the fuzzy concept' last.
It's clear that for those who are passionate about photography, the sharpness of lenses, the pixel count of the camera, the camera's dynamic range and tonal range have always been major concerns, and continue to be major concerns for very good reasons.
The camera (the technology) strives to capture reality. The concept that 'the camera never lies' has never been strictly true because lenses are not perfectly sharp and distortion free, and because cameras don't have unlimited dynamic range and unlimited pixel count.
I think it would be true to say that the camera lies to the degree that lenses are imperfect, and to the degree that cameras have limited DR, tonal range, color sensitivity and pixel density etc, although of course 'lie' is not really the correct word here. A lie is deliberate and implies a choice as to whether to lie or to be honest.
Now, to get back to the Nikon versus Canon situation. For most of us who wish to capture reality as faithfully as possible, or at least capture that first stage in our making of a photograph as faithfully as possible, before we impose on such capture our own subjective interpretation of that reality, we are not only concerned about such technical attributes as sharpness in the corners, and detail in the shadows, but the economic cost of such equipment, and its flexibility and ease of use in the field for our purposes.
For example, image stabilisation in lenses (or anti-shake sensors in cameras) are a tremendous technological innovation which has redefined the 1/FL rule. A lens without IS or VR seems like legacy equipment to me. The original Canon 70-200/F4 was a highly regarded lens with excellent sharpness, and because it was F4 maximum, it was significantly lighter and also more affordable than the equally good 70-200/F2.8.
However, for some considerable time there was a choice in this range only between the heavier and more expensive 70-200/F2.8 IS, and the non-IS, legacy 70-200/F4.
Some time ago, Canon remedied this situation and brought out a 70-200/F4 IS which is even sharper than the legacy zoom without IS. Nikon is clearly lagging behind Canon in this respect.
Now I know you can claim this is understandable because Nikon have only fairly recently started producing full frame DSLRs, and to be fair, they have given Canon a good whack regarding the performance with their first FX DSLRs, the D3, D3X and D3s, and they've also produced an excellent wide-angle zoom, the 14-24/2.8, but other FX lens developments seem a bit disappointing. The new 24-120/F4 with VR does not seem to be of the the quality of the 14-24/2.8. Okay! It's cheaper, but double the price and increase the quality, and it still would not be excessively expensive. I'm very disappointed.
(By the way, when 'shooting clothes' I think it's best to use a camera with an AA filter to avoid aliasing problems with the fabric
).