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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

≥

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

©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.

≥

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.