Canon 1Ds IV. DISCUSSION OF NEW AND IMPROVED FEATURES

IV. DISCUSSION OFNEW AND IMPROVED FEATURES 11
New 21.1 Megapixel, Full
Frame CMOSSensor
The 35mm full-frame CMOSsensor of the EOS-1Ds Mark III has been developed and
manufactured byCanon. Its 6.4µm pixels take advantage of a host of Canon R&D
advancesto achieve its speed, resolution and image quality. The following features
make the EOS-1DsMark III the highest performing digital AF SLR camera:
•35mm full-frame digital AF SLR with the world’s
highestresolution, 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 formatas of August 20, 2007.
Although the pixelsize is about the same as that of the EOS 30D, the ISO speed range is
the same asthat of the EOS-1Ds Mark II.
Byoptimizing the gap between the on-chip microlenses, reducing the height from the
photodiode to the microlens, and improving the fillfactor (photo diode area divided by
pixelsize) by applying the micro-rule that improves the performance of the exposure
device, light-gathering efficiencyhas been improved.
IV. DISCUSSION OF NEW AND
IMPROVED FEATURES
36mm
24mm
EOS-1Ds Mark III
8.2
Pixel size [µmsquare] ISO speed range
EOS 5D
100 - 1600 H 320050 L
100 - 1600 H 320050 L
EOS-1Ds Mark II 100 - 1600 H 320050 L
7.2
6.4
EOS-1Ds Mark II
(7.2 x 7.2 µm)
EOS-1Ds Mark III
(6.4 x 6.4 µm)
Photo diode area
Pixel Size
EOS-1Ds Mark II (7.2 x 7.2 µm)EOS-1Ds Mark III (6.4 x 6.4 µm)
Photo diode
Gap between microlenses
Photo diode area Pixel pitchPixel Size
CMOSSensor(Actual Size)
Opening Ratio (ConceptualDiagram) MicrolensComparison (ConceptualDiagram)