Canon EOS 40D Versus Nikon D300
The Canon EOS 40D combines
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Canon's tremendous know-how in both the digital and photographic
worlds, creating a camera that not only does everything one would
expect of a traditional digital SLR, but one that incorporates
staggering leaps forward in technological innovation. Nikon D300
features a new Active D-Lighting mode that, when enabled, provides
remarkable real-time highlight and shadow correction with optimized
image contrast. Both of them are excellent cameras. So which one should
you buy?
The Canon is a good bit lighter and more modestly sealed against dust
and water. The Nikon is heftier and more weatherproof, making it the
better choice in hostile conditions. In addition, both cameras have
self-cleaning sensor systems that automatically remove dust at
startup/shutdown. Both viewfinders are generous for cropped-sensor
cameras, but the Nikon's is slightly larger, brighter and clearer. And
it covers 100% of the frame, versus the 40D's 95%.
The LCD screen on the D300 is nothing less than amazing. The D300's
record-setting 920,000 dots are twice as sharp as the 40D's 230,000
dots, enabling us to see much finer details. Live View shooting, is
available in both cameras, which let us compose live, sensor-generated
images on the LCD screen instead of sighting through the optical
finder. Each allowed us to focus in Live View by hitting the AF-On
button, which momentarily swung the mirror down, engaged the optical AF
sensors, then flipped it up again. But the Nikon (not the Canon)
flipped its mirror down every time we shot, disabling Live View until
we reengaged it manually (by half-pressing the shutter release). That's
the major reason we preferred the Canon for Live View; it also has a
real-time histogram, exposure simulation, optional grid overlay and two
quieter shooting modes.
The 40D can rip off up to 6.5 frames per second for up to 75 images.
The D300 is close at 6 frames/sec but for 100 frames. With the optional
battery grip the D300 can do up to 8 frames/sec. Decent advantage goes
to Nikon especially when you consider the focusing mechanisms. 40D has
9 cross-point sensors. The D300 has 51 total sensors and 15 that are
cross-point. Knowing the Nikon is processing information from 51
sensors and saving more photos at higher megapixles, it's clear the
Nikon is a quicker thinker, and that translates into a higher
percentage of shots in focus. Here is a tangible advantage, one that
directly relates to what you plan use the camera for.
Both cameras' sensors are APS-C format, roughly half the size of a 35mm
frame. The EOS 40D's own CMOS chip is 10.1MP, with a 1.6x cropping
factor; the D300's, 12.3MP, and 1.5x. The 2MP difference in resolution
is negligible, output from the two cameras being virtually
indistinguishable to us when we compared RAW files in Adobe Lightroom.
But with JPEGs shot at ISO 800 and up (to 3200 in the EOS 40D, 6400 in
the D300) we could see the Nikon was applying more in-camera noise
reduction (Normal setting) than the Canon.
As for lenses, Canon has a larger selection and more versatile overall
system. Nikon has an edge in image quality at the wide-angle end,
especially with the new 14-24 f2.8. Canon has a better selection
overall but especially at the long end. If you watch professional
sports you will notice all the lenses on Football & Baseball fields
are the big white Canons. The Nikon D3 should start changing that
scenario though.
Although D300 costs 50 percent more than the EOS 40D, in fact, each
system has slight advantages over the other. Overall the end result
photo quality is going to be very close, so close that the user
experience and personal preferences may become the deciding factors.