Although,
I spent a limited time testing the camera, this is what
I found. In the field, the camera's weight was not an
issue. I was able to easily handle it since I was already
used to the 1D. The only problem I ran across was dust
in the sensor. Although I must admit that I was shooting
in a pretty dusty place, it is something to consider
if you are frequently changing lenses or shooting outdoors
in variable weather conditions.
I
was pleasantly surprised to find that moiré never
came into play on any of my field shots. But, like I
said earlier, I only had the camera for a limited time
and didn't really investigate that aspect in depth.
I figured if it showed up I would address it, but since
it didn't, I thought it best to refrain from commenting
on it one way or the other.
Battery life was long lasting. I think it's safe to
say that the battery could sustain over 650 shots per
charge. I was able to shoot for two full days before
having to charge the battery.
The
new 1Ds is expected to hit the market at a price of approximately
$8000.00 whereas a 1D can be found nowadays for $4,300.00.
Is the new 1Ds worth paying almost twice as much?
Here
is my take on a few reasons that may justify getting the
new 1Ds:
1)
You are a professional photographer (and it's tax deductible
in the U.S)
2) Your print sizes exceed 11x17 inches
3) You primarily shoot ultra wide angle (14-20mm)
4) You enjoy long exposure photography
5) Three frames per second are all you ever would need.
6) You are transitioning from film and need the highest
resolution professional body Canon offers.
7) You like making photographers jealous by living on
the cutting edge of technology. 
Reasons
for getting or staying with 1D instead.
1)
You are a professional photographer (and it's tax deductible
in the U.S)
2) Your prints never exceed 11x17 inches
3) You don't mind the 1.3x multiplier (some photographers
think of it as an advantage in the telephoto range)
4) You need the world's fastest digital camera available
(8 frames/sec)
5) Low price (with the money you save you can justify
getting that white lens you've been dreaming about)
Overall,
I don't think it's fair to call the 1Ds an upgrade to
the 1D. It truly stands alone in its class. The prints
that come out of this camera maintain their original color,
detail and luminance. It is great for large size fine
art photography prints.
Photojournalists,
sport shooters and wildlife photographers who are content
with the 1D resolution and speed may not be too interested
in the new camera. The 1Ds attracts a different crowd.
It's more geared towards photographers who are involved
in studio work, landscape, architecture, and wedding photography.
Both cameras have their advantages and the ultimate decision
is yours. I recommend evaluating your anticipated needs
carefully before choosing one over the other.
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