Kodak EasyShare M340 vs. Panasonic Lumix DMC-ZS50

Comparison

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Kodak EasyShare M340

Panasonic Lumix DMC-ZS50

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Megapixels

10.20

12.10

Max. image resolution

3664 x 2748

4000 x 3000

Sensor

Sensor type

CCD

CMOS

Sensor size

1/2.3" (~ 6.16 x 4.62 mm)

Sensor resolution

3683 x 2769

4011 x 3016

Diagonal

7.70 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

Note: Actual size is set to screen → change »

	vs
1	:	1
(ratio)

Kodak EasyShare M340		Panasonic Lumix DMC-ZS50

Surface area:

28.46 mm²

Difference: 0 mm² (0%)

M340 and ZS50 sensors are the same size.

Note: You are comparing sensors of very different generations. There is a gap of 6 years between Kodak M340 (2009) and Panasonic ZS50 (2015). Six years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.

Pixel pitch

1.67 µm

1.54 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: 0.13 µm (8%)

Pixel pitch of M340 is approx. 8% higher than pixel pitch of ZS50.

Pixel area

2.79 µm²

2.37 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: 0.42 µm² (18%)

A pixel on Kodak M340 sensor is approx. 18% bigger than a pixel on Panasonic ZS50.

Pixel density

35.75 MP/cm²

42.4 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: 6.65 µm (19%)

Panasonic ZS50 has approx. 19% higher pixel density than Kodak M340.

To learn about the accuracy of these numbers, click here.

Specs

Kodak M340

Panasonic ZS50

Crop factor

5.62

Total megapixels

10.70

12.80

Effective megapixels

10.20

12.10

Optical zoom

30x

Digital zoom

Yes

ISO sensitivity

Auto, 80, 100, 200, 400, 800, 1600

Auto, 80, 100, 200, 400, 800, 1600, 3200, 6400

RAW

Manual focus

Normal focus range

60 cm

50 cm

Macro focus range

10 cm

3 cm

Focal length (35mm equiv.)

35 - 105 mm

24 - 720 mm

Aperture priority

Yes

Max. aperture

f3.1 - f5.7

f3.3 - f6.4

Max. aperture (35mm equiv.)

f17.4 - f32

f18.5 - f36

Metering

Centre weighted, Multi-pattern, Spot

Multi, Center-weighted, Spot

Exposure compensation

±2 EV (in 1/3 EV steps)

Shutter priority

Yes

Min. shutter speed

4 sec

Max. shutter speed

1/1400 sec

1/2000 sec

Built-in flash

External flash

Viewfinder

None

Electronic

White balance presets

Screen size

2.7"

Screen resolution

230,000 dots

1,040,000 dots

Video capture

Max. video resolution

1920x1080 (60p/60i/30p)

Storage types

SDHC, Secure Digital

SD/SDHC/SDXC

USB

USB 2.0 (480 Mbit/sec)

HDMI

Wireless

GPS

Battery

Kodak KLIC-7001 Lithium-Ion

Li-ion Battery Pack

Weight

115 g

243 g

Dimensions

95.5 x 58.5 x 19.2 mm

110.7 x 64.6 x 34.4 mm

Year

2009

2015

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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

Kodak M340 diagonal

The diagonal of M340 sensor is not 1/2.3 or 0.43" (11 mm) as you might expect, but approximately two thirds of that value - 7.7 mm. If you want to know why, see sensor sizes.

w = 6.16 mm
h = 4.62 mm

Diagonal = √

6.16² + 4.62²

= 7.70 mm

Panasonic ZS50 diagonal

The diagonal of ZS50 sensor is not 1/2.3 or 0.43" (11 mm) as you might expect, but approximately two thirds of that value - 7.7 mm. If you want to know why, see sensor sizes.

w = 6.16 mm
h = 4.62 mm

Diagonal = √

6.16² + 4.62²

= 7.70 mm

Surface area

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

M340 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 mm²

ZS50 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 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

M340 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 3683 pixels

Pixel pitch =	6.16	× 1000	= 1.67 µm
	3683

ZS50 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4011 pixels

Pixel pitch =	6.16	× 1000	= 1.54 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

M340 pixel area

Pixel pitch = 1.67 µm

Pixel area = 1.67² = 2.79 µm²

ZS50 pixel area

Pixel pitch = 1.54 µm

Pixel area = 1.54² = 2.37 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

M340 pixel density

Sensor resolution width = 3683 pixels
Sensor width = 0.616 cm

Pixel density = (3683 / 0.616)² / 1000000 = 35.75 MP/cm²

ZS50 pixel density

Sensor resolution width = 4011 pixels
Sensor width = 0.616 cm

Pixel density = (4011 / 0.616)² / 1000000 = 42.4 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

M340 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 10.20

r = 6.16/4.62 = 1.33

X = √	10.20 × 1000000	= 2769
	1.33

Resolution horizontal: X × r = 2769 × 1.33 = 3683
Resolution vertical: X = 2769

Sensor resolution = 3683 x 2769

ZS50 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 12.10

r = 6.16/4.62 = 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

M340 crop factor

Sensor diagonal in mm = 7.70 mm

Crop factor =	43.27	= 5.62
	7.70

ZS50 crop factor

Sensor diagonal in mm = 7.70 mm

Crop factor =	43.27	= 5.62
	7.70

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).

M340 equivalent aperture

Crop factor = 5.62
Aperture = f3.1 - f5.7

35-mm equivalent aperture = (f3.1 - f5.7) × 5.62 = f17.4 - f32

ZS50 equivalent aperture

Crop factor = 5.62
Aperture = f3.3 - f6.4

35-mm equivalent aperture = (f3.3 - f6.4) × 5.62 = f18.5 - f36

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