Panasonic Lumix DMC-GH3 vs. Panasonic Lumix DMC-GF2

Comparison

Lumix DMC-GH3 image
vs.
Lumix DMC-GF2 image

Comparison

Panasonic Lumix DMC-GH3 Panasonic Lumix DMC-GF2
Megapixels
16.05 12.10
Max. resolution
4608 x 3456 4000 x 3000
Price
Amazon, B&H Photo, Adorama Amazon, B&H Photo, Adorama

Sensor

Sensor type
CMOS Live MOS
Sensor size
Four Thirds (17.3 x 13 mm) Four Thirds (17.3 x 13 mm)
Sensor resolution
4620 x 3474  4011 x 3016 
Diagonal
21.64 mm  21.64 mm 
Surface area
224.90 mm²  224.90 mm² 
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 sizes:
Panasonic Lumix DMC-GH3
vs.
Panasonic Lumix DMC-GF2
 
Surface area:
Panasonic Lumix DMC-GH3
Panasonic Lumix DMC-GF2
Difference: 0 mm² (0%)
Panasonic Lumix DMC-GH3 and Panasonic Lumix DMC-GF2 have the same surface area.
Note: You are comparing cameras of different generations. There is a 2 year gap between Panasonic Lumix DMC-GH3 (2012) and Panasonic Lumix DMC-GF2 (2010). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
3.74 µm  4.31 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.
Pixel pitch
Panasonic Lumix DMC-GH3
Panasonic Lumix DMC-GF2
Difference: 0.57 µm (15%)
Pixel pitch of Panasonic Lumix DMC-GF2 is approx. 15% higher than pixel pitch of Panasonic Lumix DMC-GH3.
Pixel area
13.99 µm²  18.58 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:
Panasonic Lumix DMC-GH3
vs.
Panasonic Lumix DMC-GF2
Pixel area difference: 4.59 µm² (33%)
A pixel on Panasonic Lumix DMC-GF2 sensor is approx. 33% bigger than a pixel on Panasonic Lumix DMC-GH3.
Pixel density
7.13 MP/cm²  5.38 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.
Pixel density
Panasonic Lumix DMC-GH3
Panasonic Lumix DMC-GF2
Difference: 1.75 MP/cm² (33%)
Panasonic Lumix DMC-GH3 has approx. 33% higher pixel density than Panasonic Lumix DMC-GF2.
To learn about the accuracy of these numbers, click here.

Other specifications

Crop factor
Total megapixels
17.20 13.10
Effective megapixels
16.05 12.10
Optical zoom
n/a n/a
Digital zoom
Yes Yes
Iso
Auto, 200, 400, 800, 1600, 3200, 6400, 12800 Auto, 100, 200, 400, 800, 1600, 3200, 6400
Auto focus
Yes Yes
Manual focus
Yes Yes
Normal focus range
n/a n/a
Macro focus range
n/a n/a
Focal length (35mm equiv.)
n/a n/a
Aperture priority
Yes Yes
Aperture
n/a n/a
Aperture (35mm equiv.)
n/a  n/a 
Metering
Multi, Center-weighted, Spot Centre weighted, Intelligent Multiple, Spot
Exposure compensation
±5 EV (at 1/3 EV steps) -3EV - +3EV with 1/3EV steps
Shutter priority
Yes Yes
Min. shutter speed
60 sec 60 sec
Max. shutter speed
1/4000 sec 1/4000 sec
Flash modes
Auto, On, Off, Red-Eye, Slow Sync Anti red-eye, Auto, Fill in, Off, Slow flash
Built-in flash
Yes Yes
External flash
Yes Yes
Viewfinder
Electronic None
White balance presets
5 5
LCD display
Yes Yes
LCD size
3" 3"
LCD resolution
614,000 460,000
Min. image resolution
1712 x 1712 1440 x 1440
Selftimer
Yes Yes
Storage types
SD/SDHC/SDXC SDHC, SDXC, Secure Digital
USB
USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
Batteries
Lithium-Ion rechargeable battery & charger Lithium-Ion rechargeable battery & charger
Weight
550g 310 g
Dimensions
132.9 x 93.4 x 82.0 mm 112.8x67.8x32.8 mm
Year
2012 2010



Compare other cameras

Popular comparisons:

Choose other cameras to compare:



comments powered by Disqus

Diagonal

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

Panasonic Lumix DMC-GH3 diagonal

w = 17.30 mm
h = 13.00 mm
Diagonal =  17.30² + 13.00²   = 21.64 mm

Panasonic Lumix DMC-GF2 diagonal

w = 17.30 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.

Panasonic Lumix DMC-GH3 surface area

Width = 17.30 mm
Height = 13.00 mm

Surface area = 17.30 × 13.00 = 224.90 mm²

Panasonic Lumix DMC-GF2 surface area

Width = 17.30 mm
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

Panasonic Lumix DMC-GH3 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 4620 pixels
Pixel pitch =   17.30  × 1000  = 3.74 µm
4620

Panasonic Lumix DMC-GF2 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 4011 pixels
Pixel pitch =   17.30  × 1000  = 4.31 µm
4011


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

Panasonic Lumix DMC-GH3 pixel area

Pixel pitch = 3.74 µm

Pixel area = 3.74² = 13.99 µm²

Panasonic Lumix DMC-GF2 pixel area

Pixel pitch = 4.31 µm

Pixel area = 4.31² = 18.58 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

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

Panasonic Lumix DMC-GH3 pixel density

Sensor resolution width = 4620 pixels
Sensor width = 1.73 cm

Pixel density = (4620 / 1.73)² / 1000000 = 7.13 MP/cm²

Panasonic Lumix DMC-GF2 pixel density

Sensor resolution width = 4011 pixels
Sensor width = 1.73 cm

Pixel density = (4011 / 1.73)² / 1000000 = 5.38 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. 22.8 × 15.5 sensor for example has a ratio of 1.47.

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

Panasonic Lumix DMC-GH3 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 16.05
r = 17.30/13.00 = 1.33
X =  16.05 × 1000000  = 3474
1.33
Resolution horizontal: X × r = 3474 × 1.33 = 4620
Resolution vertical: X = 3474

Sensor resolution = 4620 x 3474

Panasonic Lumix DMC-GF2 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 12.10
r = 17.30/13.00 = 1.33
X =  12.10 × 1000000  = 3016
1.33
Resolution horizontal: X × r = 3016 × 1.33 = 4011
Resolution vertical: X = 3016

Sensor resolution = 4011 x 3016


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


Panasonic Lumix DMC-GH3 crop factor

Sensor diagonal in mm = 21.64 mm
Crop factor =   43.27  = 2
21.64

Panasonic Lumix DMC-GF2 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).

Panasonic Lumix DMC-GH3 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 Lumix DMC-GH3, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Panasonic Lumix DMC-GH3 is 2

Panasonic Lumix DMC-GF2 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 Lumix DMC-GF2, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Panasonic Lumix DMC-GF2 is 2


All trademarks and product names are property of their respective owners. User comments are not the responsibility of digicamdb.com.