Kodak DCS720x vs. Panasonic Lumix DMC-GX8
Comparison
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| Kodak DCS720x | Panasonic Lumix DMC-GX8 | ||||
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Megapixels
2.00
20.30
Max. image resolution
1728 x 1152
5184 x 3888
Sensor
Sensor type
CCD
CMOS
Sensor size
22.8 x 15.5 mm
Four Thirds (17.3 x 13 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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| Kodak DCS720x | Panasonic Lumix DMC-GX8 | |
Surface area:
| 353.40 mm² | vs | 224.90 mm² |
Difference: 128.5 mm² (57%)
DCS720x sensor is approx. 1.57x bigger than GX8 sensor.
Note: You are comparing sensors of vastly different generations.
There is a gap of 14 years between Kodak DCS720x (2001) and
Panasonic GX8 (2015).
Fourteen years is a huge amount of time,
technology wise, resulting in newer sensor being much more
efficient than the older one.
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: 165.8 µm² (1495%)
A pixel on Kodak DCS720x sensor is approx. 1495% bigger than a pixel on Panasonic GX8.
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
Kodak DCS720x
Panasonic GX8
Total megapixels
2.00
21.77
Effective megapixels
2.00
20.30
Optical zoom
Digital zoom
No
Yes
ISO sensitivity
400, 800, 1600, 3200, 4000, 6400
Auto, 200-25600
RAW
Manual focus
Normal focus range
Macro focus range
Focal length (35mm equiv.)
Aperture priority
Yes
Yes
Max. aperture
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±3 EV (in 1/3 EV, 1/2 EV steps)
±5 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
30 sec
60 sec
Max. shutter speed
1/8000 sec
1/16000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Electronic
White balance presets
4
5
Screen size
1.5"
3"
Screen resolution
72,000 dots
1,040,000 dots
Video capture
Max. video resolution
3840x2160 (30p/24p)
Storage types
PCMCIA (2 x type II / 1 x type III)
SD/SDHC/SDXC
USB
USB 1.0
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Kodak NiCD / NiMH
Li-ion Battery Pack
Weight
1580 g
487 g
Dimensions
194 x 158 x 88 mm
133.2 x 77.9 x 63.1 mm
Year
2001
2015
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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 |
Kodak DCS720x diagonal
w = 22.80 mm
h = 15.50 mm
h = 15.50 mm
| Diagonal = √ | 22.80² + 15.50² | = 27.57 mm |
Panasonic GX8 diagonal
w = 17.30 mm
h = 13.00 mm
h = 13.00 mm
| Diagonal = √ | 17.30² + 13.00² | = 21.64 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
DCS720x sensor area
Width = 22.80 mm
Height = 15.50 mm
Surface area = 22.80 × 15.50 = 353.40 mm²
Height = 15.50 mm
Surface area = 22.80 × 15.50 = 353.40 mm²
GX8 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
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 |
DCS720x pixel pitch
Sensor width = 22.80 mm
Sensor resolution width = 1714 pixels
Sensor resolution width = 1714 pixels
| Pixel pitch = | 22.80 | × 1000 | = 13.3 µm |
| 1714 |
GX8 pixel pitch
Sensor width = 17.30 mm
Sensor resolution width = 5196 pixels
Sensor resolution width = 5196 pixels
| Pixel pitch = | 17.30 | × 1000 | = 3.33 µm |
| 5196 |
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 |
DCS720x pixel area
Pixel pitch = 13.3 µm
Pixel area = 13.3² = 176.89 µm²
Pixel area = 13.3² = 176.89 µm²
GX8 pixel area
Pixel pitch = 3.33 µm
Pixel area = 3.33² = 11.09 µm²
Pixel area = 3.33² = 11.09 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 |
DCS720x pixel density
Sensor resolution width = 1714 pixels
Sensor width = 2.28 cm
Pixel density = (1714 / 2.28)² / 1000000 = 0.57 MP/cm²
Sensor width = 2.28 cm
Pixel density = (1714 / 2.28)² / 1000000 = 0.57 MP/cm²
GX8 pixel density
Sensor resolution width = 5196 pixels
Sensor width = 1.73 cm
Pixel density = (5196 / 1.73)² / 1000000 = 9.02 MP/cm²
Sensor width = 1.73 cm
Pixel density = (5196 / 1.73)² / 1000000 = 9.02 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
DCS720x sensor resolution
Sensor width = 22.80 mm
Sensor height = 15.50 mm
Effective megapixels = 2.00
Resolution horizontal: X × r = 1166 × 1.47 = 1714
Resolution vertical: X = 1166
Sensor resolution = 1714 x 1166
Sensor height = 15.50 mm
Effective megapixels = 2.00
| r = 22.80/15.50 = 1.47 |
|
Resolution vertical: X = 1166
Sensor resolution = 1714 x 1166
GX8 sensor resolution
Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 20.30
Resolution horizontal: X × r = 3907 × 1.33 = 5196
Resolution vertical: X = 3907
Sensor resolution = 5196 x 3907
Sensor height = 13.00 mm
Effective megapixels = 20.30
| r = 17.30/13.00 = 1.33 |
|
Resolution vertical: X = 3907
Sensor resolution = 5196 x 3907
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 |
DCS720x crop factor
Sensor diagonal in mm = 27.57 mm
| Crop factor = | 43.27 | = 1.57 |
| 27.57 |
GX8 crop factor
Sensor diagonal in mm = 21.64 mm
| Crop factor = | 43.27 | = 2 |
| 21.64 |
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).
DCS720x 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
Kodak DCS720x, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Kodak DCS720x is 1.57
Crop factor for Kodak DCS720x is 1.57
GX8 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 GX8, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Panasonic GX8 is 2
Crop factor for Panasonic GX8 is 2
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My screen size is
inches
Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.