Canon EOS-1Ds vs. Canon EOS-1Ds Mark III

Comparison

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EOS-1Ds image
vs
EOS-1Ds Mark III image
Canon EOS-1Ds Canon EOS-1Ds Mark III
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Megapixels
11.00
21.10
Max. image resolution
4064 x 2704
5616 x 3744

Sensor

Sensor type
CMOS
CMOS
Sensor size
35.8 x 23.8 mm
36 x 24 mm
Sensor resolution
4062 x 2708
5627 x 3751
Diagonal
42.99 mm
43.27 mm
Sensor size comparison
Sensor size is generally a good indicator of the quality of the camera. Sensors can vary greatly in size. As a general rule, the bigger the sensor, the better the image quality.

Bigger sensors are more effective because they have more surface area to capture light. An important factor when comparing digital cameras is also camera generation. Generally, newer sensors will outperform the older.

Learn more about sensor sizes »

Actual sensor size

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vs
1 : 1.01
(ratio)
Canon EOS-1Ds Canon EOS-1Ds Mark III
Surface area:
852.04 mm² vs 864.00 mm²
Difference: 11.96 mm² (1%)
-1Ds Mark III sensor is slightly bigger than -1Ds sensor (only 1% difference).
Note: You are comparing cameras of different generations. There is a 5 year gap between Canon -1Ds (2002) and Canon -1Ds Mark III (2007). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
8.81 µm
6.4 µm
Pixel pitch tells you the distance from the center of one pixel (photosite) to the center of the next. It tells you how close the pixels are to each other.

The bigger the pixel pitch, the further apart they are and the bigger each pixel is. Bigger pixels tend to have better signal to noise ratio and greater dynamic range.
Difference: 2.41 µm (38%)
Pixel pitch of -1Ds is approx. 38% higher than pixel pitch of -1Ds Mark III.
Pixel area
77.62 µm²
40.96 µm²
Pixel or photosite area affects how much light per pixel can be gathered. The larger it is the more light can be collected by a single pixel.

Larger pixels have the potential to collect more photons, resulting in greater dynamic range, while smaller pixels provide higher resolutions (more detail) for a given sensor size.
Relative pixel sizes:
vs
Pixel area difference: 36.66 µm² (90%)
A pixel on Canon -1Ds sensor is approx. 90% bigger than a pixel on Canon -1Ds Mark III.
Pixel density
1.29 MP/cm²
2.44 MP/cm²
Pixel density tells you how many million pixels fit or would fit in one square cm of the sensor.

Higher pixel density means smaller pixels and lower pixel density means larger pixels.
Difference: 1.15 µm (89%)
Canon -1Ds Mark III has approx. 89% higher pixel density than Canon -1Ds.
To learn about the accuracy of these numbers, click here.



Specs

Canon -1Ds
Canon -1Ds Mark III
Crop factor
1.01
1
Total megapixels
11.40
21.90
Effective megapixels
11.00
21.10
Optical zoom
Digital zoom
No
No
ISO sensitivity
100 - 1250 in 1/3 stops, plus 50 as option
100 - 1600 in 1/3 stops, plus 50, 3200 as option
RAW
Manual focus
Normal focus range
Macro focus range
Focal length (35mm equiv.)
Aperture priority
Yes
Yes
Max. aperture
Max. aperture (35mm equiv.)
n/a
n/a
Metering
Evaluative, Multi Spot, Spot, Spot-AF
Exposure compensation
±3 EV (in 1/3 EV steps)
±3 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
30 sec
30 sec
Max. shutter speed
1/8000 sec
1/8000 sec
Built-in flash
External flash
Viewfinder
Optical (pentaprism)
Optical (pentaprism)
White balance presets
8
8
Screen size
2"
3"
Screen resolution
120,000 dots
230,000 dots
Video capture
Max. video resolution
Storage types
CompactFlash type I, CompactFlash type II, Microdrive
CompactFlash type I, CompactFlash type II, Microdrive, SDHC Secure Digital
USB
USB 1.0
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Canon Lithium-Ion
Lithium-Ion LP-E4 rechargeable battery
Weight
1585 g
1385 g
Dimensions
156 x 157.6 x 79.9 mm
156 x 160 x 80 mm
Year
2002
2007




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Diagonal

Diagonal is calculated by the use of Pythagorean theorem:
Diagonal =  w² + h²
where w = sensor width and h = sensor height

Canon -1Ds diagonal

w = 35.80 mm
h = 23.80 mm
Diagonal =  35.80² + 23.80²   = 42.99 mm

Canon -1Ds Mark III diagonal

w = 36.00 mm
h = 24.00 mm
Diagonal =  36.00² + 24.00²   = 43.27 mm


Surface area

Surface area is calculated by multiplying the width and the height of a sensor.

-1Ds sensor area

Width = 35.80 mm
Height = 23.80 mm

Surface area = 35.80 × 23.80 = 852.04 mm²

-1Ds Mark III sensor area

Width = 36.00 mm
Height = 24.00 mm

Surface area = 36.00 × 24.00 = 864.00 mm²


Pixel pitch

Pixel pitch is the distance from the center of one pixel to the center of the next measured in micrometers (µm). It can be calculated with the following formula:
Pixel pitch =   sensor width in mm  × 1000
sensor resolution width in pixels

-1Ds pixel pitch

Sensor width = 35.80 mm
Sensor resolution width = 4062 pixels
Pixel pitch =   35.80  × 1000  = 8.81 µm
4062

-1Ds Mark III pixel pitch

Sensor width = 36.00 mm
Sensor resolution width = 5627 pixels
Pixel pitch =   36.00  × 1000  = 6.4 µm
5627


Pixel area

The area of one pixel can be calculated by simply squaring the pixel pitch:
Pixel area = pixel pitch²

You could also divide sensor surface area with effective megapixels:
Pixel area =   sensor surface area in mm²
effective megapixels

-1Ds pixel area

Pixel pitch = 8.81 µm

Pixel area = 8.81² = 77.62 µm²

-1Ds Mark III pixel area

Pixel pitch = 6.4 µm

Pixel area = 6.4² = 40.96 µm²


Pixel density

Pixel density can be calculated with the following formula:
Pixel density =  ( sensor resolution width in pixels )² / 1000000
sensor width in cm

One could also use this formula:
Pixel density =   effective megapixels × 1000000  / 10000
sensor surface area in mm²

-1Ds pixel density

Sensor resolution width = 4062 pixels
Sensor width = 3.58 cm

Pixel density = (4062 / 3.58)² / 1000000 = 1.29 MP/cm²

-1Ds Mark III pixel density

Sensor resolution width = 5627 pixels
Sensor width = 3.6 cm

Pixel density = (5627 / 3.6)² / 1000000 = 2.44 MP/cm²


Sensor resolution

Sensor resolution is calculated from sensor size and effective megapixels. It's slightly higher than maximum (not interpolated) image resolution which is usually stated on camera specifications. Sensor resolution is used in pixel pitch, pixel area, and pixel density formula. For sake of simplicity, we're going to calculate it in 3 stages.

1. First we need to find the ratio between horizontal and vertical length by dividing the former with the latter (aspect ratio). It's usually 1.33 (4:3) or 1.5 (3:2), but not always.

2. With the ratio (r) known we can calculate the X from the formula below, where X is a vertical number of pixels:
(X × r) × X = effective megapixels × 1000000    →   
X =  effective megapixels × 1000000
r
3. To get sensor resolution we then multiply X with the corresponding ratio:

Resolution horizontal: X × r
Resolution vertical: X

-1Ds sensor resolution

Sensor width = 35.80 mm
Sensor height = 23.80 mm
Effective megapixels = 11.00
r = 35.80/23.80 = 1.5
X =  11.00 × 1000000  = 2708
1.5
Resolution horizontal: X × r = 2708 × 1.5 = 4062
Resolution vertical: X = 2708

Sensor resolution = 4062 x 2708

-1Ds Mark III sensor resolution

Sensor width = 36.00 mm
Sensor height = 24.00 mm
Effective megapixels = 21.10
r = 36.00/24.00 = 1.5
X =  21.10 × 1000000  = 3751
1.5
Resolution horizontal: X × r = 3751 × 1.5 = 5627
Resolution vertical: X = 3751

Sensor resolution = 5627 x 3751


Crop factor

Crop factor or focal length multiplier is calculated by dividing the diagonal of 35 mm film (43.27 mm) with the diagonal of the sensor.
Crop factor =   43.27 mm
sensor diagonal in mm


-1Ds crop factor

Sensor diagonal in mm = 42.99 mm
Crop factor =   43.27  = 1.01
42.99

-1Ds Mark III crop factor

Sensor diagonal in mm = 43.27 mm
Crop factor =   43.27  = 1
43.27

35 mm equivalent aperture

Equivalent aperture (in 135 film terms) is calculated by multiplying lens aperture with crop factor (a.k.a. focal length multiplier).

-1Ds equivalent aperture

Aperture is a lens characteristic, so it's calculated only for fixed lens cameras. If you want to know the equivalent aperture for Canon -1Ds, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Canon -1Ds is 1.01

-1Ds Mark III equivalent aperture

Aperture is a lens characteristic, so it's calculated only for fixed lens cameras. If you want to know the equivalent aperture for Canon -1Ds Mark III, take the aperture of the lens you're using and multiply it with crop factor.

Since crop factor for Canon -1Ds Mark III is 1, the equivalent aperture is aperture.

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