Canon EOS 1D Mark III Witboek - Pagina 11

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Canon EOS 1D Mark III Witboek
New 21.1 Megapixel, Full
Frame CMOS Sensor
IV. DISCUSSION OF NEW AND
IMPROVED FEATURES
The 35mm full-frame CMOS sensor of the EOS-1Ds Mark III has been developed and
manufactured by Canon. Its 6.4µm pixels take advantage of a host of Canon R&D
advances to achieve its speed, resolution and image quality. The following features
make the EOS-1Ds Mark III the highest performing digital AF SLR camera:
• 35mm full-frame digital AF SLR with the world's
highest resolution, approximately 21.1
megapixels*
• Wide ISO speed range (ISO 100- 1600, L: 50,
H: 3200)
• Low noise (same level as EOS-1Ds Mark II)
• High-speed signal reading (approximately 5 fps)
• Low power consumption
• Live View Function
*For 24x36mm format as of August 20, 2007.
Although the pixel size is about the same as that of the EOS 30D, the ISO speed range is
the same as that of the EOS-1Ds Mark II.
Pixel size [µm square]
EOS-1Ds Mark III
6.4
EOS-1Ds Mark II
7.2
EOS 5D
8.2
By optimizing the gap between the on-chip microlenses, reducing the height from the
photodiode to the microlens, and improving the fill factor (photo diode area divided by
pixel size) by applying the micro-rule that improves the performance of the exposure
device, light-gathering efficiency has been improved.
Opening Ratio (Conceptual Diagram)
Photo diode area
Pixel Size
EOS-1Ds Mark III
EOS-1Ds Mark II
(6.4 x 6.4 µm)
(7.2 x 7.2 µm)
IV. DISCUSSION OF NEW AND IMPROVED FEATURES
ISO speed range
50
L
100 - 1600
50
L
100 - 1600
50
L
100 - 1600
Microlens Comparison (Conceptual Diagram)
Pixel Size
EOS-1Ds Mark III (6.4 x 6.4 µm)
36mm
CMOS Sensor (Actual Size)
H
3200
H
3200
H
3200
Gap between microlenses
Photo diode area
Pixel pitch
Photo diode
EOS-1Ds Mark II (7.2 x 7.2 µm)
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