Praktica DC Slim 5 vs. Olympus Stylus 600

Comparison

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DC Slim 5 image
vs
Stylus 600 image
Praktica DC Slim 5 Olympus Stylus 600
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Megapixels
5.10
6.00
Max. image resolution
3680 x 2760
2816 x 2112

Sensor

Sensor type
CMOS
CCD
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
1/2.5" (~ 5.75 x 4.32 mm)
Sensor resolution
2604 x 1958
2825 x 2124
Diagonal
8.89 mm
7.19 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
1.53 : 1
(ratio)
Praktica DC Slim 5 Olympus Stylus 600
Surface area:
37.90 mm² vs 24.84 mm²
Difference: 13.06 mm² (53%)
DC Slim 5 sensor is approx. 1.53x bigger than 600 sensor.
Pixel pitch
2.73 µm
2.04 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: 0.69 µm (34%)
Pixel pitch of DC Slim 5 is approx. 34% higher than pixel pitch of 600.
Pixel area
7.45 µm²
4.16 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: 3.29 µm² (79%)
A pixel on Praktica DC Slim 5 sensor is approx. 79% bigger than a pixel on Olympus 600.
Pixel density
13.41 MP/cm²
24.14 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: 10.73 µm (80%)
Olympus 600 has approx. 80% higher pixel density than Praktica DC Slim 5.
To learn about the accuracy of these numbers, click here.



Specs

Praktica DC Slim 5
Olympus 600
Crop factor
4.87
6.02
Total megapixels
6.40
Effective megapixels
6.00
Optical zoom
No
3x
Digital zoom
Yes
Yes
ISO sensitivity
Auto
Auto, 64, 100, 200, 400, 500, (2MP; 800, 1600)
RAW
Manual focus
Normal focus range
120 cm
50 cm
Macro focus range
19 cm
7 cm
Focal length (35mm equiv.)
48 mm
35 - 105 mm
Aperture priority
No
No
Max. aperture
f3
f3.1 - f5.2
Max. aperture (35mm equiv.)
f14.6
f18.7 - f31.3
Metering
Centre weighted
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/2 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
No
Min. shutter speed
4 sec
Max. shutter speed
1/1000 sec
Built-in flash
External flash
Viewfinder
None
None
White balance presets
4
6
Screen size
2"
2.5"
Screen resolution
153,600 dots
115,000 dots
Video capture
Max. video resolution
Storage types
Secure Digital
xD Picture Card, Internal
USB
USB 2.0 (480 Mbit/sec)
USB 1.0
HDMI
Wireless
GPS
Battery
2x AAA
Lithium-Ion rechargeable
Weight
95 g
195 g
Dimensions
92 x 58 x 27 mm
97 x 55 x 27 mm
Year
2005
2005




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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

Praktica DC Slim 5 diagonal

The diagonal of DC Slim 5 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

Olympus 600 diagonal

The diagonal of 600 sensor is not 1/2.5 or 0.4" (10.2 mm) as you might expect, but approximately two thirds of that value - 7.19 mm. If you want to know why, see sensor sizes.

w = 5.75 mm
h = 4.32 mm
Diagonal =  5.75² + 4.32²   = 7.19 mm


Surface area

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

DC Slim 5 sensor area

Width = 7.11 mm
Height = 5.33 mm

Surface area = 7.11 × 5.33 = 37.90 mm²

600 sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 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

DC Slim 5 pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2604 pixels
Pixel pitch =   7.11  × 1000  = 2.73 µm
2604

600 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2825 pixels
Pixel pitch =   5.75  × 1000  = 2.04 µm
2825


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

DC Slim 5 pixel area

Pixel pitch = 2.73 µm

Pixel area = 2.73² = 7.45 µm²

600 pixel area

Pixel pitch = 2.04 µm

Pixel area = 2.04² = 4.16 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

DC Slim 5 pixel density

Sensor resolution width = 2604 pixels
Sensor width = 0.711 cm

Pixel density = (2604 / 0.711)² / 1000000 = 13.41 MP/cm²

600 pixel density

Sensor resolution width = 2825 pixels
Sensor width = 0.575 cm

Pixel density = (2825 / 0.575)² / 1000000 = 24.14 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

DC Slim 5 sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 5.10
r = 7.11/5.33 = 1.33
X =  5.10 × 1000000  = 1958
1.33
Resolution horizontal: X × r = 1958 × 1.33 = 2604
Resolution vertical: X = 1958

Sensor resolution = 2604 x 1958

600 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 6.00
r = 5.75/4.32 = 1.33
X =  6.00 × 1000000  = 2124
1.33
Resolution horizontal: X × r = 2124 × 1.33 = 2825
Resolution vertical: X = 2124

Sensor resolution = 2825 x 2124


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


DC Slim 5 crop factor

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

600 crop factor

Sensor diagonal in mm = 7.19 mm
Crop factor =   43.27  = 6.02
7.19

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).

DC Slim 5 equivalent aperture

Crop factor = 4.87
Aperture = f3

35-mm equivalent aperture = (f3) × 4.87 = f14.6

600 equivalent aperture

Crop factor = 6.02
Aperture = f3.1 - f5.2

35-mm equivalent aperture = (f3.1 - f5.2) × 6.02 = f18.7 - f31.3

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