Panasonic Lumix DMC-TS2 vs. Pentax Optio 555

Comparison

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Lumix DMC-TS2 image
vs
Optio 555 image
Panasonic Lumix DMC-TS2 Pentax Optio 555
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Megapixels
14.10
5.00
Max. image resolution
4320 x 3240
2592 x 1944

Sensor

Sensor type
CCD
CCD
Sensor size
1/2.33" (~ 6.08 x 4.56 mm)
1/1.8" (~ 7.11 x 5.33 mm)
Sensor resolution
4330 x 3256
2579 x 1939
Diagonal
7.60 mm
8.89 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 : 1.37
(ratio)
Panasonic Lumix DMC-TS2 Pentax Optio 555
Surface area:
27.72 mm² vs 37.90 mm²
Difference: 10.18 mm² (37%)
555 sensor is approx. 1.37x bigger than TS2 sensor.
Note: You are comparing sensors of very different generations. There is a gap of 7 years between Panasonic TS2 (2010) and Pentax 555 (2003). Seven years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
1.4 µm
2.76 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: 1.36 µm (97%)
Pixel pitch of 555 is approx. 97% higher than pixel pitch of TS2.
Pixel area
1.96 µm²
7.62 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:
vs
Pixel area difference: 5.66 µm² (289%)
A pixel on Pentax 555 sensor is approx. 289% bigger than a pixel on Panasonic TS2.
Pixel density
50.72 MP/cm²
13.16 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: 37.56 µm (285%)
Panasonic TS2 has approx. 285% higher pixel density than Pentax 555.
To learn about the accuracy of these numbers, click here.



Specs

Panasonic TS2
Pentax 555
Crop factor
5.69
4.87
Total megapixels
14.50
5.20
Effective megapixels
14.10
5.00
Optical zoom
4.6x
5x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 80, 100, 200, 400, 800, 1600 - 6400
Auto, 64, 100, 200, 400
RAW
Manual focus
Normal focus range
30 cm
60 cm
Macro focus range
3 cm
2 cm
Focal length (35mm equiv.)
28 - 128 mm
38 - 188 mm
Aperture priority
No
No
Max. aperture
f3.3 - f5.9
f2.8 - f4.6
Max. aperture (35mm equiv.)
f18.8 - f33.6
f13.6 - f22.4
Metering
Intelligent Multiple
Centre weighted, Matrix, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
No
Min. shutter speed
60 sec
15 sec
Max. shutter speed
1/1300 sec
1/2000 sec
Built-in flash
External flash
Viewfinder
None
Optical (tunnel)
White balance presets
6
6
Screen size
2.7"
1.6"
Screen resolution
230,000 dots
84,000 dots
Video capture
Max. video resolution
Storage types
SDHC, SDXC, Secure Digital
MultiMedia, Secure Digital
USB
USB 2.0 (480 Mbit/sec)
USB 1.0
HDMI
Wireless
GPS
Battery
Lithium-Ion rechargeable battery
Lithium-Ion rechargeable
Weight
188 g
205 g
Dimensions
99 x 63 x 24 mm
100 x 59 x 39.5 mm
Year
2010
2003




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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

Panasonic TS2 diagonal

The diagonal of TS2 sensor is not 1/2.33 or 0.43" (10.9 mm) as you might expect, but approximately two thirds of that value - 7.6 mm. If you want to know why, see sensor sizes.

w = 6.08 mm
h = 4.56 mm
Diagonal =  6.08² + 4.56²   = 7.60 mm

Pentax 555 diagonal

The diagonal of 555 sensor is not 1/1.8 or 0.56" (14.1 mm) as you might expect, but approximately two thirds of that value - 8.89 mm. If you want to know why, see sensor sizes.

w = 7.11 mm
h = 5.33 mm
Diagonal =  7.11² + 5.33²   = 8.89 mm


Surface area

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

TS2 sensor area

Width = 6.08 mm
Height = 4.56 mm

Surface area = 6.08 × 4.56 = 27.72 mm²

555 sensor area

Width = 7.11 mm
Height = 5.33 mm

Surface area = 7.11 × 5.33 = 37.90 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

TS2 pixel pitch

Sensor width = 6.08 mm
Sensor resolution width = 4330 pixels
Pixel pitch =   6.08  × 1000  = 1.4 µm
4330

555 pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2579 pixels
Pixel pitch =   7.11  × 1000  = 2.76 µm
2579


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

TS2 pixel area

Pixel pitch = 1.4 µm

Pixel area = 1.4² = 1.96 µm²

555 pixel area

Pixel pitch = 2.76 µm

Pixel area = 2.76² = 7.62 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

TS2 pixel density

Sensor resolution width = 4330 pixels
Sensor width = 0.608 cm

Pixel density = (4330 / 0.608)² / 1000000 = 50.72 MP/cm²

555 pixel density

Sensor resolution width = 2579 pixels
Sensor width = 0.711 cm

Pixel density = (2579 / 0.711)² / 1000000 = 13.16 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

TS2 sensor resolution

Sensor width = 6.08 mm
Sensor height = 4.56 mm
Effective megapixels = 14.10
r = 6.08/4.56 = 1.33
X =  14.10 × 1000000  = 3256
1.33
Resolution horizontal: X × r = 3256 × 1.33 = 4330
Resolution vertical: X = 3256

Sensor resolution = 4330 x 3256

555 sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 5.00
r = 7.11/5.33 = 1.33
X =  5.00 × 1000000  = 1939
1.33
Resolution horizontal: X × r = 1939 × 1.33 = 2579
Resolution vertical: X = 1939

Sensor resolution = 2579 x 1939


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


TS2 crop factor

Sensor diagonal in mm = 7.60 mm
Crop factor =   43.27  = 5.69
7.60

555 crop factor

Sensor diagonal in mm = 8.89 mm
Crop factor =   43.27  = 4.87
8.89

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).

TS2 equivalent aperture

Crop factor = 5.69
Aperture = f3.3 - f5.9

35-mm equivalent aperture = (f3.3 - f5.9) × 5.69 = f18.8 - f33.6

555 equivalent aperture

Crop factor = 4.87
Aperture = f2.8 - f4.6

35-mm equivalent aperture = (f2.8 - f4.6) × 4.87 = f13.6 - f22.4

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