Olympus C-180 vs. Olympus C-160

Comparison

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Olympus C-180

Olympus C-160

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Megapixels

5.10

3.30

Max. image resolution

2592 x 1944

2048 x 1536

Sensor

Sensor type

CCD

Sensor size

1/2.5" (~ 5.75 x 4.32 mm)

1/2.7" (~ 5.33 x 4 mm)

Sensor resolution

2604 x 1958

2095 x 1575

Diagonal

7.19 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
1.17	:	1
(ratio)

Olympus C-180		Olympus C-160

Surface area:

24.84 mm²

21.32 mm²

Difference: 3.52 mm² (17%)

C-180 sensor is approx. 1.17x bigger than C-160 sensor.

Pixel pitch

2.21 µm

2.54 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: 0.33 µm (15%)

Pixel pitch of C-160 is approx. 15% higher than pixel pitch of C-180.

Pixel area

4.88 µm²

6.45 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: 1.57 µm² (32%)

A pixel on Olympus C-160 sensor is approx. 32% bigger than a pixel on Olympus C-180.

Pixel density

20.51 MP/cm²

15.45 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: 5.06 µm (33%)

Olympus C-180 has approx. 33% higher pixel density than Olympus C-160.

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

Specs

Olympus C-180

Olympus C-160

Crop factor

6.02

6.5

Total megapixels

Effective megapixels

Optical zoom

Digital zoom

Yes

ISO sensitivity

Auto, 50 - 250

50 - 150

RAW

Manual focus

Normal focus range

50 cm

Macro focus range

20 cm

Focal length (35mm equiv.)

37 mm

33 mm

Aperture priority

Max. aperture

f2.8

Max. aperture (35mm equiv.)

f16.9

f18.2

Metering

ESP Digital

Exposure compensation

±2 EV (in 1/3 EV steps)

Shutter priority

Min. shutter speed

2 sec

Max. shutter speed

1/1500 sec

1/800 sec

Built-in flash

External flash

Viewfinder

None

Optical

White balance presets

Screen size

1.5"

Screen resolution

85,000 dots

120,000 dots

Video capture

Max. video resolution

Storage types

xD Picture card

USB

USB 2.0 (480 Mbit/sec)

USB 1.1

HDMI

Wireless

GPS

Battery

1x CR-V3, 2x AA

Weight

120 g

154 g

Dimensions

101 x 51 x 36 mm

110 x 62 x 37.5 mm

Year

2005

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

Olympus C-180 diagonal

The diagonal of C-180 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

Olympus C-160 diagonal

The diagonal of C-160 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.

C-180 sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 mm²

C-160 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

C-180 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2604 pixels

Pixel pitch =	5.75	× 1000	= 2.21 µm
	2604

C-160 pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 2095 pixels

Pixel pitch =	5.33	× 1000	= 2.54 µm
	2095

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

C-180 pixel area

Pixel pitch = 2.21 µm

Pixel area = 2.21² = 4.88 µm²

C-160 pixel area

Pixel pitch = 2.54 µm

Pixel area = 2.54² = 6.45 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

C-180 pixel density

Sensor resolution width = 2604 pixels
Sensor width = 0.575 cm

Pixel density = (2604 / 0.575)² / 1000000 = 20.51 MP/cm²

C-160 pixel density

Sensor resolution width = 2095 pixels
Sensor width = 0.533 cm

Pixel density = (2095 / 0.533)² / 1000000 = 15.45 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

C-180 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 5.10

r = 5.75/4.32 = 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

C-160 sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 3.30

r = 5.33/4.00 = 1.33

X = √	3.30 × 1000000	= 1575
	1.33

Resolution horizontal: X × r = 1575 × 1.33 = 2095
Resolution vertical: X = 1575

Sensor resolution = 2095 x 1575

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

C-180 crop factor

Sensor diagonal in mm = 7.19 mm

Crop factor =	43.27	= 6.02
	7.19

C-160 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).

C-180 equivalent aperture

Crop factor = 6.02
Aperture = f2.8

35-mm equivalent aperture = (f2.8) × 6.02 = f16.9

C-160 equivalent aperture

Crop factor = 6.5
Aperture = f2.8

35-mm equivalent aperture = (f2.8) × 6.5 = f18.2

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