Praktica DC 440 vs. Fujifilm FinePix E510 Zoom

Comparison

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DC 440 image
vs
FinePix E510 Zoom image
Praktica DC 440 Fujifilm FinePix E510 Zoom
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Megapixels
4.00
5.20
Max. image resolution
2816 x 2120
2592 x 1944

Sensor

Sensor type
CCD
CCD
Sensor size
1/2.5" (~ 5.75 x 4.32 mm)
1/2.5" (~ 5.75 x 4.32 mm)
Sensor resolution
2306 x 1734
2629 x 1977
Diagonal
7.19 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 : 1
(ratio)
Praktica DC 440 Fujifilm FinePix E510 Zoom
Surface area:
24.84 mm² vs 24.84 mm²
Difference: 0 mm² (0%)
DC 440 and E510 Zoom sensors are the same size.
Pixel pitch
2.49 µm
2.19 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: 0.3 µm (14%)
Pixel pitch of DC 440 is approx. 14% higher than pixel pitch of E510 Zoom.
Pixel area
6.2 µm²
4.8 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: 1.4 µm² (29%)
A pixel on Praktica DC 440 sensor is approx. 29% bigger than a pixel on Fujifilm E510 Zoom.
Pixel density
16.08 MP/cm²
20.9 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: 4.82 µm (30%)
Fujifilm E510 Zoom has approx. 30% higher pixel density than Praktica DC 440.
To learn about the accuracy of these numbers, click here.



Specs

Praktica DC 440
Fujifilm E510 Zoom
Crop factor
6.02
6.02
Total megapixels
5.40
Effective megapixels
5.20
Optical zoom
No
3.3x
Digital zoom
Yes
Yes
ISO sensitivity
Auto
Auto, 80, 100, 200, 400
RAW
Manual focus
Normal focus range
100 cm
60 cm
Macro focus range
20 cm
3 cm
Focal length (35mm equiv.)
48 mm
28 - 91 mm
Aperture priority
No
Yes
Max. aperture
f2.9
f2.9 - f5.5
Max. aperture (35mm equiv.)
f17.5
f17.5 - f33.1
Metering
Centre weighted
64-segment
Exposure compensation
±2 EV (in 1/2 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
5 sec
2 sec
Max. shutter speed
1/1000 sec
1/2000 sec
Built-in flash
External flash
Viewfinder
Optical
Optical (tunnel)
White balance presets
5
5
Screen size
1.6"
2"
Screen resolution
85,000 dots
154,000 dots
Video capture
Max. video resolution
Storage types
Secure Digital
xD Picture card
USB
USB 1.1
USB 1.0
HDMI
Wireless
GPS
Battery
2x AA
AA (2) batteries (NiMH recommended)
Weight
122 g
176 g
Dimensions
98 x 51 x 37.3 mm
101 x 61 x 33 mm
Year
2004
2004




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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 440 diagonal

The diagonal of DC 440 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

Fujifilm E510 Zoom diagonal

The diagonal of E510 Zoom 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 440 sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 mm²

E510 Zoom 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 440 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2306 pixels
Pixel pitch =   5.75  × 1000  = 2.49 µm
2306

E510 Zoom pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2629 pixels
Pixel pitch =   5.75  × 1000  = 2.19 µm
2629


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 440 pixel area

Pixel pitch = 2.49 µm

Pixel area = 2.49² = 6.2 µm²

E510 Zoom pixel area

Pixel pitch = 2.19 µm

Pixel area = 2.19² = 4.8 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 440 pixel density

Sensor resolution width = 2306 pixels
Sensor width = 0.575 cm

Pixel density = (2306 / 0.575)² / 1000000 = 16.08 MP/cm²

E510 Zoom pixel density

Sensor resolution width = 2629 pixels
Sensor width = 0.575 cm

Pixel density = (2629 / 0.575)² / 1000000 = 20.9 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 440 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 4.00
r = 5.75/4.32 = 1.33
X =  4.00 × 1000000  = 1734
1.33
Resolution horizontal: X × r = 1734 × 1.33 = 2306
Resolution vertical: X = 1734

Sensor resolution = 2306 x 1734

E510 Zoom sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 5.20
r = 5.75/4.32 = 1.33
X =  5.20 × 1000000  = 1977
1.33
Resolution horizontal: X × r = 1977 × 1.33 = 2629
Resolution vertical: X = 1977

Sensor resolution = 2629 x 1977


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 440 crop factor

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

E510 Zoom 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 440 equivalent aperture

Crop factor = 6.02
Aperture = f2.9

35-mm equivalent aperture = (f2.9) × 6.02 = f17.5

E510 Zoom equivalent aperture

Crop factor = 6.02
Aperture = f2.9 - f5.5

35-mm equivalent aperture = (f2.9 - f5.5) × 6.02 = f17.5 - f33.1

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