Panasonic Lumix DMC-GX1 vs. Canon PowerShot G1 X
Comparison
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| Panasonic Lumix DMC-GX1 | Canon PowerShot G1 X | ||||
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Megapixels
16.00
14.30
Max. image resolution
4592 x 3448
4352 x 3264
Sensor
Sensor type
CMOS
CMOS
Sensor size
Four Thirds (17.3 x 13 mm)
1.5" (~ 18.7 x 14 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 »
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 → change »
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| Panasonic Lumix DMC-GX1 | Canon PowerShot G1 X | |
Surface area:
| 224.90 mm² | vs | 261.80 mm² |
Difference: 36.9 mm² (16%)
G1 X sensor is approx. 1.16x bigger than GX1 sensor.
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.
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.
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.
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: 4.17 µm² (30%)
A pixel on Canon G1 X sensor is approx. 30% bigger than a pixel on Panasonic GX1.
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.
Higher pixel density means smaller pixels and lower pixel density means larger pixels.
To learn about the accuracy of these numbers,
click here.
Specs
Panasonic GX1
Canon G1 X
Total megapixels
16.60
15.00
Effective megapixels
16.00
14.30
Optical zoom
4x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 160 - 12800
Auto, 100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 50, 1600, 2000, 2500, 3200, 4000, 5000, 6400, 8000, 10000, 12800
RAW
Manual focus
Normal focus range
40 cm
Macro focus range
20 cm
Focal length (35mm equiv.)
28 - 112 mm
Aperture priority
Yes
Yes
Max. aperture
f2.8 - f5.8
Metering
Centre weighted, Multi-pattern, Spot
Centre weighted, Evaluative, Spot
Exposure compensation
±5 EV (in 1/3 EV steps)
±3 EV (in 1/3 EV, 1/2 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
Bulb+60 sec
60 sec
Max. shutter speed
1/4000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Electronic (optional)
Optical (tunnel)
White balance presets
5
7
Screen size
3"
3"
Screen resolution
460,000 dots
920,000 dots
Video capture
Max. video resolution
1920x1080 (24p)
Storage types
SDHC, SDXC, Secure Digital
SDHC, SDXC, Secure Digital
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Lithium-Ion rechargeable battery
Lithium-Ion NB-10L rechargeable battery
Weight
318 g
534 g
Dimensions
116 x 68 x 39 mm
116.7 x 80.5 x 64.7 mm
Year
2011
2012
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
Panasonic GX1 diagonal
w = 17.30 mm
h = 13.00 mm
h = 13.00 mm
| Diagonal = √ | 17.30² + 13.00² | = 21.64 mm |
Canon G1 X diagonal
The diagonal of G1 X sensor is not 1.5" (38.1 mm) as you might expect, but approximately two thirds of
that value - 23.36 mm. If you want to know why, see
sensor sizes.
w = 18.70 mm
h = 14.00 mm
w = 18.70 mm
h = 14.00 mm
| Diagonal = √ | 18.70² + 14.00² | = 23.36 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
GX1 sensor area
Width = 17.30 mm
Height = 13.00 mm
Surface area = 17.30 × 13.00 = 224.90 mm²
Height = 13.00 mm
Surface area = 17.30 × 13.00 = 224.90 mm²
G1 X sensor area
Width = 18.70 mm
Height = 14.00 mm
Surface area = 18.70 × 14.00 = 261.80 mm²
Height = 14.00 mm
Surface area = 18.70 × 14.00 = 261.80 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 |
GX1 pixel pitch
Sensor width = 17.30 mm
Sensor resolution width = 4612 pixels
Sensor resolution width = 4612 pixels
| Pixel pitch = | 17.30 | × 1000 | = 3.75 µm |
| 4612 |
G1 X pixel pitch
Sensor width = 18.70 mm
Sensor resolution width = 4378 pixels
Sensor resolution width = 4378 pixels
| Pixel pitch = | 18.70 | × 1000 | = 4.27 µm |
| 4378 |
Pixel area
The area of one pixel can be calculated by simply squaring the pixel pitch:
You could also divide sensor surface area with effective megapixels:
Pixel area = pixel pitch²
You could also divide sensor surface area with effective megapixels:
| Pixel area = | sensor surface area in mm² |
| effective megapixels |
GX1 pixel area
Pixel pitch = 3.75 µm
Pixel area = 3.75² = 14.06 µm²
Pixel area = 3.75² = 14.06 µm²
G1 X pixel area
Pixel pitch = 4.27 µm
Pixel area = 4.27² = 18.23 µm²
Pixel area = 4.27² = 18.23 µm²
Pixel density
Pixel density can be calculated with the following formula:
One could also use this 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 |
GX1 pixel density
Sensor resolution width = 4612 pixels
Sensor width = 1.73 cm
Pixel density = (4612 / 1.73)² / 1000000 = 7.11 MP/cm²
Sensor width = 1.73 cm
Pixel density = (4612 / 1.73)² / 1000000 = 7.11 MP/cm²
G1 X pixel density
Sensor resolution width = 4378 pixels
Sensor width = 1.87 cm
Pixel density = (4378 / 1.87)² / 1000000 = 5.48 MP/cm²
Sensor width = 1.87 cm
Pixel density = (4378 / 1.87)² / 1000000 = 5.48 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:
3. To get sensor resolution we then multiply X with the corresponding ratio:
Resolution horizontal: X × r
Resolution vertical: X
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 → |
|
Resolution horizontal: X × r
Resolution vertical: X
GX1 sensor resolution
Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 16.00
Resolution horizontal: X × r = 3468 × 1.33 = 4612
Resolution vertical: X = 3468
Sensor resolution = 4612 x 3468
Sensor height = 13.00 mm
Effective megapixels = 16.00
| r = 17.30/13.00 = 1.33 |
|
Resolution vertical: X = 3468
Sensor resolution = 4612 x 3468
G1 X sensor resolution
Sensor width = 18.70 mm
Sensor height = 14.00 mm
Effective megapixels = 14.30
Resolution horizontal: X × r = 3267 × 1.34 = 4378
Resolution vertical: X = 3267
Sensor resolution = 4378 x 3267
Sensor height = 14.00 mm
Effective megapixels = 14.30
| r = 18.70/14.00 = 1.34 |
|
Resolution vertical: X = 3267
Sensor resolution = 4378 x 3267
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 |
GX1 crop factor
Sensor diagonal in mm = 21.64 mm
| Crop factor = | 43.27 | = 2 |
| 21.64 |
G1 X crop factor
Sensor diagonal in mm = 23.36 mm
| Crop factor = | 43.27 | = 1.85 |
| 23.36 |
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).
GX1 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
Panasonic GX1, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Panasonic GX1 is 2
Crop factor for Panasonic GX1 is 2
G1 X equivalent aperture
Crop factor = 1.85
Aperture = f2.8 - f5.8
35-mm equivalent aperture = (f2.8 - f5.8) × 1.85 = f5.2 - f10.7
Aperture = f2.8 - f5.8
35-mm equivalent aperture = (f2.8 - f5.8) × 1.85 = f5.2 - f10.7
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