Olympus C-315 Zoom vs. Olympus C-350 Zoom

Comparison

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C-315 Zoom image
vs
C-350 Zoom image
Olympus C-315 Zoom Olympus C-350 Zoom
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Megapixels
5.36
3.34
Max. image resolution
2592 x 1944
2048 x 1536

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
2671 x 2008
2108 x 1585
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)
Olympus C-315 Zoom Olympus C-350 Zoom
Surface area:
24.84 mm² vs 24.84 mm²
Difference: 0 mm² (0%)
C-315 Zoom and C-350 Zoom sensors are the same size.
Note: You are comparing cameras of different generations. There is a 2 year gap between Olympus C-315 Zoom (2005) and Olympus C-350 Zoom (2003). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
2.15 µm
2.73 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: 0.58 µm (27%)
Pixel pitch of C-350 Zoom is approx. 27% higher than pixel pitch of C-315 Zoom.
Pixel area
4.62 µm²
7.45 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:
vs
Pixel area difference: 2.83 µm² (61%)
A pixel on Olympus C-350 Zoom sensor is approx. 61% bigger than a pixel on Olympus C-315 Zoom.
Pixel density
21.58 MP/cm²
13.44 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: 8.14 µm (61%)
Olympus C-315 Zoom has approx. 61% higher pixel density than Olympus C-350 Zoom.
To learn about the accuracy of these numbers, click here.



Specs

Olympus C-315 Zoom
Olympus C-350 Zoom
Crop factor
6.02
6.02
Total megapixels
Effective megapixels
Optical zoom
Yes
Yes
Digital zoom
Yes
Yes
ISO sensitivity
Auto
Auto, (60-400)
RAW
Manual focus
Normal focus range
50 cm
50 cm
Macro focus range
2 cm
20 cm
Focal length (35mm equiv.)
38 - 106 mm
35 - 105 mm
Aperture priority
No
No
Max. aperture
f3 - f5
f3.1 - f5.2
Max. aperture (35mm equiv.)
f18.1 - f30.1
f18.7 - f31.3
Metering
ESP Digital, Spot
ESP Digital, Multi-segment, Spot
Exposure compensation
±2 EV (in 1/2 EV steps)
±2 EV (in 1/2 EV steps)
Shutter priority
No
No
Min. shutter speed
1 sec
2 sec
Max. shutter speed
1/2000 sec
1/1000 sec
Built-in flash
External flash
Viewfinder
Optical
Optical
White balance presets
5
4
Screen size
1.8"
1.8"
Screen resolution
85,000 dots
85,000 dots
Video capture
Max. video resolution
Storage types
xD Picture card
xD Picture card
USB
USB 1.1
USB 1.1
HDMI
Wireless
GPS
Battery
1x CR-V3, 2x AA
1x CR-V3, 2x AA
Weight
150 g
215 g
Dimensions
102.5 x 55.5 x 36.5 mm
108 x 57 x 40 mm
Year
2005
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

Olympus C-315 Zoom diagonal

The diagonal of C-315 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

Olympus C-350 Zoom diagonal

The diagonal of C-350 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.

C-315 Zoom sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 mm²

C-350 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

C-315 Zoom pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2671 pixels
Pixel pitch =   5.75  × 1000  = 2.15 µm
2671

C-350 Zoom pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2108 pixels
Pixel pitch =   5.75  × 1000  = 2.73 µm
2108


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-315 Zoom pixel area

Pixel pitch = 2.15 µm

Pixel area = 2.15² = 4.62 µm²

C-350 Zoom pixel area

Pixel pitch = 2.73 µm

Pixel area = 2.73² = 7.45 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-315 Zoom pixel density

Sensor resolution width = 2671 pixels
Sensor width = 0.575 cm

Pixel density = (2671 / 0.575)² / 1000000 = 21.58 MP/cm²

C-350 Zoom pixel density

Sensor resolution width = 2108 pixels
Sensor width = 0.575 cm

Pixel density = (2108 / 0.575)² / 1000000 = 13.44 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-315 Zoom sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 5.36
r = 5.75/4.32 = 1.33
X =  5.36 × 1000000  = 2008
1.33
Resolution horizontal: X × r = 2008 × 1.33 = 2671
Resolution vertical: X = 2008

Sensor resolution = 2671 x 2008

C-350 Zoom sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 3.34
r = 5.75/4.32 = 1.33
X =  3.34 × 1000000  = 1585
1.33
Resolution horizontal: X × r = 1585 × 1.33 = 2108
Resolution vertical: X = 1585

Sensor resolution = 2108 x 1585


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-315 Zoom crop factor

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

C-350 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).

C-315 Zoom equivalent aperture

Crop factor = 6.02
Aperture = f3 - f5

35-mm equivalent aperture = (f3 - f5) × 6.02 = f18.1 - f30.1

C-350 Zoom 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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