Nikon D3 / D300 Vs. Canon
I deliberately have not ready *any* of the posts above before posting this,so my comments are not in response to anybody's comments. Unlike many people, I own a pretty wide-array Nikon system, but in 2005 I added a Canon 20D and a few lenses to my Nikon kit, and then added an EOS 5D and 580 EX-II. I have several items in common in both systems. Here's what have noticed: Nikon occasionally has trouble meeting demand for its brand-new products, like the 70-200 VR, 200-400 VR, 18-200 VR, or the D3 and D300. Nikon is a smaller company than Canon,and does not have the production capability Canon has.
My feeling, based on internet message boards over the last 5-7 years, is that Canon had a HUGE problem with front and back-focus issues on many lenses and bodies, and invented AF micro-adjust because they were literally, losing sales and customers, due to sub-par AF performance with many different lenses. Now that AF microadjust has shown its worth, Nikon has implemented the same feature.
Nikon's biggest problem has been lack of product in stores,with waits of many months, even a year, to get the "hot,new thing" at walk-in retail. Only the largest retailers,like
B&H and
Adorama, often have products.
Nikon lenses often cost more than comparable Canon lenses,and it is my own,personal belief that the extra $100-$500 cost of a Nikkor is due to tighter production line tolerances and more QC attention payed to lenses which are produced on a smaller scale. I've heard of more examples of poorly-centered zooms from anon than from Nikon, but that's all anecdotal evidence.
BOTH companies have had "debacles". Nikon's D70 BGLOD or Blinking Green Light of Death syndrome was embarrassing....Canon's EOS 1D Mark III's 18-month saga of unreliable autofocus in sports action under high-contrast bright lighting conditions was a major black eye,and sent many professional sports and news shooters over to Nikon's D3. NEITHER company is faultless in its manufacturing and delivery or its product lines and QC...each has some dogs and some diamonds.
Canon's major-major problem to me has been the unexpected,random failure of its bodies with the Err 99 code....it has cost me shots and shut down shoots for me numerous times with the 20D and 5D....I have never had a Nikon body Err out on me for no apparent reason. Ever.