Praktica Dpix 910z vs. Fujifilm FinePix AV100

Comparison

change cameras »

Praktica Dpix 910z

Fujifilm FinePix AV100

check price »

Megapixels

9.00

12.20

Max. image resolution

4032 x 3024

4000 x 3000

Sensor

Sensor type

CCD

Sensor size

1/2" (~ 6.4 x 4.8 mm)

1/2.3" (~ 6.16 x 4.62 mm)

Sensor resolution

3459 x 2601

4029 x 3029

Diagonal

8.00 mm

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
1.08	:	1
(ratio)

Praktica Dpix 910z		Fujifilm FinePix AV100

Surface area:

30.72 mm²

28.46 mm²

Difference: 2.26 mm² (8%)

Dpix 910z sensor is approx. 1.08x bigger than AV100 sensor.

Pixel pitch

1.85 µm

1.53 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: 0.32 µm (21%)

Pixel pitch of Dpix 910z is approx. 21% higher than pixel pitch of AV100.

Pixel area

3.42 µm²

2.34 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: 1.08 µm² (46%)

A pixel on Praktica Dpix 910z sensor is approx. 46% bigger than a pixel on Fujifilm AV100.

Pixel density

29.21 MP/cm²

42.78 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: 13.57 µm (46%)

Fujifilm AV100 has approx. 46% higher pixel density than Praktica Dpix 910z.

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

Specs

Praktica Dpix 910z

Fujifilm AV100

Crop factor

5.41

5.62

Total megapixels

Effective megapixels

Optical zoom

Yes

Digital zoom

Yes

ISO sensitivity

Auto, 80, 100, 200, 400, 800

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

RAW

Manual focus

Normal focus range

60 cm

Macro focus range

5 cm

10 cm

Focal length (35mm equiv.)

36 - 108 mm

32 - 96 mm

Aperture priority

Max. aperture

f2.8 - f4.6

f2.9 - f5.2

Max. aperture (35mm equiv.)

f15.1 - f24.9

f16.3 - f29.2

Metering

Matrix, Spot

TTL 256-zones metering

Exposure compensation

±2 EV (in 1/3 EV steps)

Shutter priority

Min. shutter speed

1/2 sec

8 sec

Max. shutter speed

1/4000 sec

1/1400 sec

Built-in flash

External flash

Viewfinder

None

White balance presets

Screen size

2.4"

2.7"

Screen resolution

230,000 dots

Video capture

Max. video resolution

Storage types

SDHC, Secure Digital

USB

USB 2.0 (480 Mbit/sec)

HDMI

Wireless

GPS

Battery

2x AA

Weight

120 g

119 g

Dimensions

88 x 62 x 30 mm

93.0 x 60.2 x 27.8 mm

Year

2009

2010

Choose cameras to compare

Popular comparisons:

Diagonal

Diagonal is calculated by the use of Pythagorean theorem:

Diagonal = √

w² + h²

where w = sensor width and h = sensor height

Praktica Dpix 910z diagonal

The diagonal of Dpix 910z sensor is not 1/2 or 0.5" (12.7 mm) as you might expect, but approximately two thirds of that value - 8 mm. If you want to know why, see sensor sizes.

w = 6.40 mm
h = 4.80 mm

Diagonal = √

6.40² + 4.80²

= 8.00 mm

Fujifilm AV100 diagonal

The diagonal of AV100 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.

Dpix 910z sensor area

Width = 6.40 mm
Height = 4.80 mm

Surface area = 6.40 × 4.80 = 30.72 mm²

AV100 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

Dpix 910z pixel pitch

Sensor width = 6.40 mm
Sensor resolution width = 3459 pixels

Pixel pitch =	6.40	× 1000	= 1.85 µm
	3459

AV100 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4029 pixels

Pixel pitch =	6.16	× 1000	= 1.53 µm
	4029

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

Dpix 910z pixel area

Pixel pitch = 1.85 µm

Pixel area = 1.85² = 3.42 µm²

AV100 pixel area

Pixel pitch = 1.53 µm

Pixel area = 1.53² = 2.34 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

Dpix 910z pixel density

Sensor resolution width = 3459 pixels
Sensor width = 0.64 cm

Pixel density = (3459 / 0.64)² / 1000000 = 29.21 MP/cm²

AV100 pixel density

Sensor resolution width = 4029 pixels
Sensor width = 0.616 cm

Pixel density = (4029 / 0.616)² / 1000000 = 42.78 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

Dpix 910z sensor resolution

Sensor width = 6.40 mm
Sensor height = 4.80 mm
Effective megapixels = 9.00

r = 6.40/4.80 = 1.33

X = √	9.00 × 1000000	= 2601
	1.33

Resolution horizontal: X × r = 2601 × 1.33 = 3459
Resolution vertical: X = 2601

Sensor resolution = 3459 x 2601

AV100 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 12.20

r = 6.16/4.62 = 1.33

X = √	12.20 × 1000000	= 3029
	1.33

Resolution horizontal: X × r = 3029 × 1.33 = 4029
Resolution vertical: X = 3029

Sensor resolution = 4029 x 3029

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

Dpix 910z crop factor

Sensor diagonal in mm = 8.00 mm

Crop factor =	43.27	= 5.41
	8.00

AV100 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).

Dpix 910z equivalent aperture

Crop factor = 5.41
Aperture = f2.8 - f4.6

35-mm equivalent aperture = (f2.8 - f4.6) × 5.41 = f15.1 - f24.9

AV100 equivalent aperture

Crop factor = 5.62
Aperture = f2.9 - f5.2

35-mm equivalent aperture = (f2.9 - f5.2) × 5.62 = f16.3 - f29.2

Enter your screen size (diagonal)

My screen size is inches

Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.