Canon EOS 7D Brochure page 5

Taking advantage of its own proprietary technolo-
gies, Canon develops and produces its own CMOS
sensors. Unlike CCD sensors, CMOS sensors convert
and amplify signals before they are transferred to
the image processor, enabling them to produce
exceptionally clean image data and reduce power
consumption by as much as 90%. Data transfer
speeds are increased by using multi-channel signal
paths that dramatically improve the camera's
responsiveness. Canon's CMOS sensors incorporate
EOS-1Ds Mark III Full-Frame CMOS Sensor (actual size)
a unique on-chip noise reduction technology to
deal with both fixed pattern and random noise.
In addition, a multilayer low-pass filter is placed SLR cameras with full-frame sensors, found on
in front of the sensor to isolate false colors that the EOS-1Ds Mark III and EOS 5D Mark II, do not
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the sensor may detect. Then, Canon's own require a focal length conversion factor common
Image Processor processes the image to help to other digital SLR cameras on the market.
eliminate those colors while retaining full detail. Instead, they deliver the same angle-of-view as
CMOS sensors can also be fabricated to full-frame 35mm film cameras, so the working distance to
35mm dimensions, an important consideration the subject, with a given lens, is the same as it
for photographers who wish to use their lenses would be on film. Since you can use EF lenses
without a conversion factor. Canon's CMOS on either 35mm film cameras or Canon Digital
sensors deliver outstanding resolution and signal SLR cameras with the same results, the switch
purity, making them ideal for the most critical from film to digital is truly seamless. Full-frame
photo or video applications. sensors provide greater control over depth-of-
field, which helps to create beautiful background
blur, perfect for portraits. The large sensor area
The Canon-manufactured full-frame also helps to enable a marked reduction in
CMOS sensor delivers professional noise levels at all ISO values. When combined
performance with digital convenience. EOS Digital with high resolution and smooth gradation from
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©Clay Blackmore
When using the same lens with different cameras, the
angle-of-view varies depending on the sensor size.
highlights to shadows, Canon digital SLR cameras
with full-frame sensors produce images that rival
those taken with professional medium-format
and large-format film cameras. For maximum
control and dependable performance, the choice
is simple—Canon full-frame Digital SLR cameras.
The EOS-1Ds Mark III and 5D Mark II sensors have
21.1 effective megapixels and the EOS-1D Mark IV
has 16.1 effective megapixels. Individual pixel size
on the EOS-1Ds Mark III's and 5D Mark II's sensors
are 6.4μm, and the EOS-1D Mark IV's sensor is
5.7μm. By optimizing the gap between the on-chip
microlenses and improving the fill factor (photo-
diode area divided by total pixel size) of each pixel,
light-gathering efficiency has been improved.
High ISO – Whether shooting stills or video, Canon EOS SLR cameras capture silky-smooth low-noise images that are sharp
with a wide dynamic range of color and tone, even at high ISO speeds.
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EOS SLR cameras feature an extensive ISO range
Developed to maximize performance for greater flexibility in diverse photographic
between capturing and recording stages situations. The EOS-1D Mark IV features the
of digital photography, the DIGIC 4 and DIGIC III
Image Processors by Canon use advanced signal
processing technologies to dramatically enhance
image quality and deliver a more intuitive,
responsive camera. The DIGIC 4/III Image
Processors work in concert with Canon CMOS
sensors to achieve even higher levels of perform-
ance, with high-end EOS cameras incorporating
Dual DIGIC 4 Image Processors. Signal process-
Taken with the EOS-1D Mark IV.
breathtaking ISO range of ISO 100-12800
(L:50, H1: 25600, H2: 51200, H3: 102400)!
Even at higher ISO settings where one might
expect to see a higher degree of noise, the
ing algorithms work with the multi-channel signal renowned Canon CMOS sensor and noise
from the sensor and the high-speed DDR-SDRAM reduction system work to ensure superb image
buffer to deliver significantly improved camera quality. Accordingly, even the most critical
response. Power consumption has been further photographers can use EOS SLR cameras with
reduced for even longer battery life. Color repro- confidence, no matter the light.
duction, noise reduction in low light situations
and reproduction of fine detail are all signifi-
cantly improved. In addition, the latest Dual EOS Digital SLR cameras employ 14-bit converters
DIGIC 4 Image Processors speed up all opera- to process the output of the imaging sensor.
tions such that a number of processor intensive Compared to the 12-bit converters used in most
features are possible. Canon technologies like digital cameras, the Canon design helps ensure
Face Detection Live mode, Full HD and HD movie smoother tonal transitions, more natural grada-
recording, Lens Peripheral Illumination tions, and superb color fidelity. RAW images are
Correction and Auto Lighting Optimizer are all recorded at 14 bits so that processed 16-bit TIFF
possible thanks to the power afforded by the images contain the full range of tonal values
amazing DIGIC Image Processor. captured by the sensor.
*Standard output sensitivity. Recommended exposure index.
EOS SLR CAMERAS
Loss of highlight
detail is one of the
greatest concerns for
photographers shoot-
ing digitally in brightly
Highlight Tone Priority: ON
lit and contrasty situa-
tions. Canon's Highlight
Tone Priority function
calculates the exposure
to expand the image's
Highlight Tone Priority: OFF
dynamic range so that
more detail is preserved in highlights. This
renders a more continuous tone image without
blown highlights, and helps to save time in
postprocessing for highlight retrieval.
Another feature available in Canon's newest EOS
Digital cameras is Canon's Lens Peripheral
Illumination Correction feature. Taking into account
the lens in use, this feature automatically brightens
the light level at the four corners of the composition
where light falloff may have occurred. Peripheral
illumination characteristics and correction data
are detected automatically on a number of Canon
lenses and can be entered manually through
Canon's EOS utility software. This function can
be applied when shooting to JPEG images, and in
post-processing with RAW images.
One of Canon's newest technologies, the Auto
Lighting Optimizer, automatically corrects image
exposure to help ensure accurate brightness
and contrast. It can actually brighten areas of
Auto Lighting Optimizer OFF Auto Lighting Optimizer ON
the composition while maintaining highlight
details and accurate exposure in others, or
darken areas of composition while maintaining
brightness and shadow details in others. This
remarkable feature is available as both an
automatic feature in Full Auto and Creative Auto
shooting modes, and can be used and fine-tuned
in other modes. The Canon Auto Lighting
Optimizer ensures beautifully exposed images
that require little to no post-production work.
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