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
Note: Actual size is set to screen →
vs 1 : 1.02 (ratio) Canon EOS 200D Canon EOS 70D
Surface area:
Difference: 5.23 mm² (2%)
70D sensor is slightly bigger than 200D sensor (only 2% difference).
Note: You are comparing cameras of different generations. There is a 4 year gap between Canon 200D (2017) and Canon 70D (2013). All things being equal, newer sensor generations generally outperform the older.
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: 0.39 µm (11%)
Pixel pitch of 70D is approx. 11% higher than pixel pitch of 200D.
Pixel area
13.69 µm²
16.73 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:
Pixel area difference: 3.04 µm² (22%)
A pixel on Canon 70D sensor is approx. 22% bigger than a pixel on Canon 200D.
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: 1.31 µm (22%)
Canon 200D has approx. 22% higher pixel density than Canon 70D.
To learn about the accuracy of these numbers, click here.
Specs
Total megapixels
25.80
20.90
Effective megapixels
24.20
20.20
ISO sensitivity
Auto, 100-25600 (expandable to 51200)
Auto, 100, 200, 400, 800, 1600, 3200, 6400, 12800 (25600 with boost)
Focal length (35mm equiv.)
Aperture priority
Yes
Yes
Max. aperture (35mm equiv.)
n/a
n/a
Metering
Multi, Center-weighted, Spot, Partial
Multi, Center-weighted, Spot, Partial
Exposure compensation
±5 EV (in 1/3 EV, 1/2 EV steps)
±5 EV (in 1/3 EV, 1/2 EV steps)
Min. shutter speed
30 sec
30 sec
Max. shutter speed
1/4000 sec
1/8000 sec
Viewfinder
Optical (pentamirror)
Optical (pentaprism)
White balance presets
6
6
Screen resolution
1,040,000 dots
1,040,000 dots
Max. video resolution
1920x1080 (60p/50p/30p/25p/24p)
1920x1080 (30p/25p/24p)
Storage types
SD/SDHC/SDXC
SD/SDHC/SDXC
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
Battery
LP-E17 lithium-ion battery
Rechargeable Li-ion Battery LP-E6
Dimensions
122.4 x 92.6 x 69.8 mm
139 x 104.3 x 78.5 mm
Choose cameras to compare
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- Canon EOS 200D vs. Canon EOS 1300D
- Canon EOS 200D vs. Canon EOS 600D
- Canon EOS 200D vs. Canon EOS 70D
- Canon EOS 200D vs. Nikon D5600
- Canon EOS 200D vs. Canon EOS 60D
- Canon EOS 200D vs. Canon EOS 77D
Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
Canon 200D diagonal
w = 22.30 mm h = 14.90 mm
Diagonal = √ 22.30² + 14.90² = 26.82 mm
Canon 70D diagonal
w = 22.50 mm h = 15.00 mm
Diagonal = √ 22.50² + 15.00² = 27.04 mm
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
200D sensor area
Width = 22.30 mm Height = 14.90 mm
Surface area = 22.30 × 14.90 = 332.27 mm²
70D sensor area
Width = 22.50 mm Height = 15.00 mm
Surface area = 22.50 × 15.00 = 337.50 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
200D pixel pitch
Sensor width = 22.30 mm Sensor resolution width = 6026 pixels
Pixel pitch = 22.30 × 1000 = 3.7 µm 6026
70D pixel pitch
Sensor width = 22.50 mm Sensor resolution width = 5505 pixels
Pixel pitch = 22.50 × 1000 = 4.09 µm 5505
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
200D pixel area
Pixel pitch = 3.7 µm
Pixel area = 3.7² = 13.69 µm²
70D pixel area
Pixel pitch = 4.09 µm
Pixel area = 4.09² = 16.73 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
200D pixel density
Sensor resolution width = 6026 pixels Sensor width = 2.23 cm
Pixel density = (6026 / 2.23)² / 1000000 = 7.3 MP/cm²
70D pixel density
Sensor resolution width = 5505 pixels Sensor width = 2.25 cm
Pixel density = (5505 / 2.25)² / 1000000 = 5.99 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
200D sensor resolution
Sensor width = 22.30 mm Sensor height = 14.90 mm Effective megapixels = 24.20
r = 22.30/14.90 = 1.5 X = √ 24.20 × 1000000 = 4017 1.5
Resolution horizontal: X × r = 4017 × 1.5 = 6026 Resolution vertical: X = 4017
Sensor resolution = 6026 x 4017
70D sensor resolution
Sensor width = 22.50 mm Sensor height = 15.00 mm Effective megapixels = 20.20
r = 22.50/15.00 = 1.5 X = √ 20.20 × 1000000 = 3670 1.5
Resolution horizontal: X × r = 3670 × 1.5 = 5505 Resolution vertical: X = 3670
Sensor resolution = 5505 x 3670
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
200D crop factor
Sensor diagonal in mm = 26.82 mm
Crop factor = 43.27 = 1.61 26.82
70D crop factor
Sensor diagonal in mm = 27.04 mm
Crop factor = 43.27 = 1.6 27.04
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).
200D 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 70D, take the aperture of the lens you're using and multiply it with crop factor.