Sony Cyber-shot DSC-T50 vs. Fujifilm FinePix 40i
Comparison
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| Sony Cyber-shot DSC-T50 | Fujifilm FinePix 40i | ||||
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Megapixels
7.20
2.40
Max. image resolution
3072 x 2304
2400 x 1800
Sensor
Sensor type
CCD
CCD
Sensor size
1/2.5" (~ 5.75 x 4.32 mm)
1/2.7" (~ 5.33 x 4 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 »
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 »
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| Sony Cyber-shot DSC-T50 | Fujifilm FinePix 40i | |
Surface area:
| 24.84 mm² | vs | 21.32 mm² |
Difference: 3.52 mm² (17%)
T50 sensor is approx. 1.17x bigger than 40i sensor.
Note: You are comparing sensors of very different generations.
There is a gap of 6 years between Sony T50 (2006) and Fujifilm 40i (2000).
Six years is a lot of time in terms
of technology, meaning newer sensors are overall much more
efficient than the older ones.
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.
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.
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.
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: 5.42 µm² (157%)
A pixel on Fujifilm 40i sensor is approx. 157% bigger than a pixel on Sony T50.
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.
Higher pixel density means smaller pixels and lower pixel density means larger pixels.
To learn about the accuracy of these numbers,
click here.
Specs
Sony T50
Fujifilm 40i
Total megapixels
2.40
Effective megapixels
2.40
Optical zoom
3x
1x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 64, 100, 200, 400, 800, 1000
200
RAW
Manual focus
Normal focus range
50 cm
50 cm
Macro focus range
6 cm
6 cm
Focal length (35mm equiv.)
38 - 114 mm
36 mm
Aperture priority
No
No
Max. aperture
f3.5 - f4.3
f2.8
Metering
Centre weighted, Multi-pattern, Spot
64-segment
Exposure compensation
±2 EV (in 1/3 EV steps)
±1.5 EV (in 1/3 EV steps)
Shutter priority
No
No
Min. shutter speed
8 sec
1/4 sec
Max. shutter speed
1/2000 sec
1/1000 sec
Built-in flash
External flash
Viewfinder
None
Optical (tunnel)
White balance presets
7
7
Screen size
3"
1.8"
Screen resolution
230,000 dots
110,000 dots
Video capture
Max. video resolution
Storage types
Memory Stick Duo, Memory Stick Pro Duo
SmartMedia
USB
USB 2.0 (480 Mbit/sec)
USB 1.0
HDMI
Wireless
GPS
Battery
InfoLithium (NP-FR1)
AA NiMH (2) batteries (supplied)
Weight
170 g
155 g
Dimensions
95.0 x 56.5 x 23.4 mm
85.5 x 71 x 28.5 mm
Year
2006
2000
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
Sony T50 diagonal
The diagonal of T50 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
w = 5.75 mm
h = 4.32 mm
| Diagonal = √ | 5.75² + 4.32² | = 7.19 mm |
Fujifilm 40i diagonal
The diagonal of 40i 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
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.
T50 sensor area
Width = 5.75 mm
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
40i sensor area
Width = 5.33 mm
Height = 4.00 mm
Surface area = 5.33 × 4.00 = 21.32 mm²
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 |
T50 pixel pitch
Sensor width = 5.75 mm
Sensor resolution width = 3095 pixels
Sensor resolution width = 3095 pixels
| Pixel pitch = | 5.75 | × 1000 | = 1.86 µm |
| 3095 |
40i pixel pitch
Sensor width = 5.33 mm
Sensor resolution width = 1786 pixels
Sensor resolution width = 1786 pixels
| Pixel pitch = | 5.33 | × 1000 | = 2.98 µm |
| 1786 |
Pixel area
The area of one pixel can be calculated by simply squaring the pixel pitch:
You could also divide sensor surface area with effective megapixels:
Pixel area = pixel pitch²
You could also divide sensor surface area with effective megapixels:
| Pixel area = | sensor surface area in mm² |
| effective megapixels |
T50 pixel area
Pixel pitch = 1.86 µm
Pixel area = 1.86² = 3.46 µm²
Pixel area = 1.86² = 3.46 µm²
40i pixel area
Pixel pitch = 2.98 µm
Pixel area = 2.98² = 8.88 µm²
Pixel area = 2.98² = 8.88 µm²
Pixel density
Pixel density can be calculated with the following formula:
One could also use this 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 |
T50 pixel density
Sensor resolution width = 3095 pixels
Sensor width = 0.575 cm
Pixel density = (3095 / 0.575)² / 1000000 = 28.97 MP/cm²
Sensor width = 0.575 cm
Pixel density = (3095 / 0.575)² / 1000000 = 28.97 MP/cm²
40i pixel density
Sensor resolution width = 1786 pixels
Sensor width = 0.533 cm
Pixel density = (1786 / 0.533)² / 1000000 = 11.23 MP/cm²
Sensor width = 0.533 cm
Pixel density = (1786 / 0.533)² / 1000000 = 11.23 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:
3. To get sensor resolution we then multiply X with the corresponding ratio:
Resolution horizontal: X × r
Resolution vertical: X
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 → |
|
Resolution horizontal: X × r
Resolution vertical: X
T50 sensor resolution
Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 7.20
Resolution horizontal: X × r = 2327 × 1.33 = 3095
Resolution vertical: X = 2327
Sensor resolution = 3095 x 2327
Sensor height = 4.32 mm
Effective megapixels = 7.20
| r = 5.75/4.32 = 1.33 |
|
Resolution vertical: X = 2327
Sensor resolution = 3095 x 2327
40i sensor resolution
Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 2.40
Resolution horizontal: X × r = 1343 × 1.33 = 1786
Resolution vertical: X = 1343
Sensor resolution = 1786 x 1343
Sensor height = 4.00 mm
Effective megapixels = 2.40
| r = 5.33/4.00 = 1.33 |
|
Resolution vertical: X = 1343
Sensor resolution = 1786 x 1343
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 |
T50 crop factor
Sensor diagonal in mm = 7.19 mm
| Crop factor = | 43.27 | = 6.02 |
| 7.19 |
40i 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).
T50 equivalent aperture
Crop factor = 6.02
Aperture = f3.5 - f4.3
35-mm equivalent aperture = (f3.5 - f4.3) × 6.02 = f21.1 - f25.9
Aperture = f3.5 - f4.3
35-mm equivalent aperture = (f3.5 - f4.3) × 6.02 = f21.1 - f25.9
40i equivalent aperture
Crop factor = 6.5
Aperture = f2.8
35-mm equivalent aperture = (f2.8) × 6.5 = f18.2
Aperture = f2.8
35-mm equivalent aperture = (f2.8) × 6.5 = f18.2
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