Fujifilm FinePix AV205 vs. Pentax Optio 33WR

Comparison

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Fujifilm FinePix AV205

Pentax Optio 33WR

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Megapixels

14.00

3.10

Max. image resolution

4320 x 3240

2048 x 1536

Sensor

Sensor type

CCD

Sensor size

1/2.3" (~ 6.16 x 4.62 mm)

1/2.7" (~ 5.33 x 4 mm)

Sensor resolution

4315 x 3244

2031 x 1527

Diagonal

7.70 mm

6.66 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
1.33	:	1
(ratio)

Fujifilm FinePix AV205		Pentax Optio 33WR

Surface area:

28.46 mm²

21.32 mm²

Difference: 7.14 mm² (33%)

AV205 sensor is approx. 1.33x bigger than 33WR sensor.

Note: You are comparing sensors of very different generations. There is a gap of 8 years between Fujifilm AV205 (2011) and Pentax 33WR (2003). Eight years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.

Pixel pitch

1.43 µm

2.62 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: 1.19 µm (83%)

Pixel pitch of 33WR is approx. 83% higher than pixel pitch of AV205.

Pixel area

2.04 µm²

6.86 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: 4.82 µm² (236%)

A pixel on Pentax 33WR sensor is approx. 236% bigger than a pixel on Fujifilm AV205.

Pixel density

49.07 MP/cm²

14.52 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: 34.55 µm (238%)

Fujifilm AV205 has approx. 238% higher pixel density than Pentax 33WR.

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

Specs

Fujifilm AV205

Pentax 33WR

Crop factor

5.62

6.5

Total megapixels

3.30

Effective megapixels

14.00

3.10

Optical zoom

2.8x

Digital zoom

Yes

ISO sensitivity

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

Auto, 50, 100, 200, 400

RAW

Manual focus

Normal focus range

45 cm

40 cm

Macro focus range

5 cm

10 cm

Focal length (35mm equiv.)

32 - 96 mm

37 - 104 mm

Aperture priority

Max. aperture

f2.9 - f5.2

f2.8 - f3.9

Max. aperture (35mm equiv.)

f16.3 - f29.2

f18.2 - f25.4

Metering

TTL 256-zones metering

Centre weighted, Matrix, Spot

Exposure compensation

±2 EV (in 1/3 EV steps)

Shutter priority

Min. shutter speed

8 sec

2 sec

Max. shutter speed

1/1400 sec

1/2000 sec

Built-in flash

External flash

Viewfinder

None

Optical (tunnel)

White balance presets

Screen size

2.7"

1.6"

Screen resolution

230,000 dots

84,000 dots

Video capture

Max. video resolution

Storage types

SDHC, Secure Digital

MultiMedia, Secure Digital

USB

USB 2.0 (480 Mbit/sec)

USB 1.0

HDMI

Wireless

GPS

Battery

2x AA

AA (2) batteries (NiMH recommended)

Weight

168 g

175 g

Dimensions

93 x 60 x 28 mm

81.5 x 76 x 30.5 mm

Year

2011

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

Fujifilm AV205 diagonal

The diagonal of AV205 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

Pentax 33WR diagonal

The diagonal of 33WR sensor is not 1/2.7 or 0.37" (9.4 mm) as you might expect, but approximately two thirds of that value - 6.66 mm. If you want to know why, see sensor sizes.

w = 5.33 mm
h = 4.00 mm

Diagonal = √

5.33² + 4.00²

= 6.66 mm

Surface area

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

AV205 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 mm²

33WR sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 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

AV205 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4315 pixels

Pixel pitch =	6.16	× 1000	= 1.43 µm
	4315

33WR pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 2031 pixels

Pixel pitch =	5.33	× 1000	= 2.62 µm
	2031

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

AV205 pixel area

Pixel pitch = 1.43 µm

Pixel area = 1.43² = 2.04 µm²

33WR pixel area

Pixel pitch = 2.62 µm

Pixel area = 2.62² = 6.86 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

AV205 pixel density

Sensor resolution width = 4315 pixels
Sensor width = 0.616 cm

Pixel density = (4315 / 0.616)² / 1000000 = 49.07 MP/cm²

33WR pixel density

Sensor resolution width = 2031 pixels
Sensor width = 0.533 cm

Pixel density = (2031 / 0.533)² / 1000000 = 14.52 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

AV205 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 14.00

r = 6.16/4.62 = 1.33

X = √	14.00 × 1000000	= 3244
	1.33

Resolution horizontal: X × r = 3244 × 1.33 = 4315
Resolution vertical: X = 3244

Sensor resolution = 4315 x 3244

33WR sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 3.10

r = 5.33/4.00 = 1.33

X = √	3.10 × 1000000	= 1527
	1.33

Resolution horizontal: X × r = 1527 × 1.33 = 2031
Resolution vertical: X = 1527

Sensor resolution = 2031 x 1527

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

AV205 crop factor

Sensor diagonal in mm = 7.70 mm

Crop factor =	43.27	= 5.62
	7.70

33WR crop factor

Sensor diagonal in mm = 6.66 mm

Crop factor =	43.27	= 6.5
	6.66

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).

AV205 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

33WR equivalent aperture

Crop factor = 6.5
Aperture = f2.8 - f3.9

35-mm equivalent aperture = (f2.8 - f3.9) × 6.5 = f18.2 - f25.4

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