Minolta DiMAGE Xt vs. Olympus Stylus 770 SW
Comparison
| change cameras » | |||||
|
vs |
|
|||
| Minolta DiMAGE Xt | Olympus Stylus 770 SW | ||||
| check price » | check price » | ||||
Megapixels
3.34
7.10
Max. image resolution
2048 x 1536
3072 x 2304
Sensor
Sensor type
CCD
CCD
Sensor size
1/2.7" (~ 5.33 x 4 mm)
1/2.3" (~ 6.16 x 4.62 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 »
|
|
vs |
|
| 1 | : | 1.33 |
| (ratio) | ||
| Minolta DiMAGE Xt | Olympus Stylus 770 SW | |
Surface area:
| 21.32 mm² | vs | 28.46 mm² |
Difference: 7.14 mm² (33%)
770 SW sensor is approx. 1.33x bigger than DiMAGE Xt sensor.
Note: You are comparing cameras of different generations.
There is a 4 year gap between Minolta DiMAGE Xt (2003) and Olympus 770 SW (2007).
All things being equal, newer sensor generations generally outperform the older.
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: 2.36 µm² (58%)
A pixel on Minolta DiMAGE Xt sensor is approx. 58% bigger than a pixel on Olympus 770 SW.
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
Minolta DiMAGE Xt
Olympus 770 SW
Total megapixels
7.40
Effective megapixels
7.10
Optical zoom
3x
3x
Digital zoom
Yes
Yes
ISO sensitivity
50, 100, 200, 400
Auto, 80, 100, 200, 400, 800, (1600 with limitations)
RAW
Manual focus
Normal focus range
15 cm
50 cm
Macro focus range
15 cm
7 cm
Focal length (35mm equiv.)
37 - 111 mm
38 - 114 mm
Aperture priority
No
No
Max. aperture
f2.8 - f3.6
f3.5 - f5.0
Metering
256-segment Matrix, Spot
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
No
Min. shutter speed
4 sec
4 sec
Max. shutter speed
1/1000 sec
1/2000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
None
White balance presets
6
5
Screen size
1.5"
2.5"
Screen resolution
110,000 dots
230,000 dots
Video capture
Max. video resolution
Storage types
MultiMedia, Secure Digital
xD Picture Card, Internal
USB
USB 1.0
USB 1.0
HDMI
Wireless
GPS
Battery
Lithium-Ion (NP-200)
Lithium-Ion rechargeable
Weight
146 g
195 g
Dimensions
85 x 67 x 20 mm
92 x 59 x 21 mm
Year
2003
2007
Choose cameras to compare
Popular comparisons:
- Minolta DiMAGE Xt vs. Konica-Minolta DiMAGE X50
- Minolta DiMAGE Xt vs. Minolta DiMAGE X
- Minolta DiMAGE Xt vs. Konica-Minolta DiMAGE X60
- Minolta DiMAGE Xt vs. Minolta DiMAGE X20
- Minolta DiMAGE Xt vs. Konica-Minolta DiMAGE Xg
- Minolta DiMAGE Xt vs. Konica-Minolta DiMAGE X1
- Minolta DiMAGE Xt vs. Nikon Coolpix SQ
- Minolta DiMAGE Xt vs. Sony Cyber-shot DSC-F828
- Minolta DiMAGE Xt vs. Konica-Minolta DiMAGE X31
- Minolta DiMAGE Xt vs. Olympus Stylus 770 SW
- Minolta DiMAGE Xt vs. Casio Exilim EX-Z4
Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
Minolta DiMAGE Xt diagonal
The diagonal of DiMAGE Xt 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 |
Olympus 770 SW diagonal
The diagonal of 770 SW 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
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.
DiMAGE Xt 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
770 SW sensor area
Width = 6.16 mm
Height = 4.62 mm
Surface area = 6.16 × 4.62 = 28.46 mm²
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 |
DiMAGE Xt pixel pitch
Sensor width = 5.33 mm
Sensor resolution width = 2108 pixels
Sensor resolution width = 2108 pixels
| Pixel pitch = | 5.33 | × 1000 | = 2.53 µm |
| 2108 |
770 SW pixel pitch
Sensor width = 6.16 mm
Sensor resolution width = 3072 pixels
Sensor resolution width = 3072 pixels
| Pixel pitch = | 6.16 | × 1000 | = 2.01 µm |
| 3072 |
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 |
DiMAGE Xt pixel area
Pixel pitch = 2.53 µm
Pixel area = 2.53² = 6.4 µm²
Pixel area = 2.53² = 6.4 µm²
770 SW pixel area
Pixel pitch = 2.01 µm
Pixel area = 2.01² = 4.04 µm²
Pixel area = 2.01² = 4.04 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 |
DiMAGE Xt pixel density
Sensor resolution width = 2108 pixels
Sensor width = 0.533 cm
Pixel density = (2108 / 0.533)² / 1000000 = 15.64 MP/cm²
Sensor width = 0.533 cm
Pixel density = (2108 / 0.533)² / 1000000 = 15.64 MP/cm²
770 SW pixel density
Sensor resolution width = 3072 pixels
Sensor width = 0.616 cm
Pixel density = (3072 / 0.616)² / 1000000 = 24.87 MP/cm²
Sensor width = 0.616 cm
Pixel density = (3072 / 0.616)² / 1000000 = 24.87 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
DiMAGE Xt sensor resolution
Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 3.34
Resolution horizontal: X × r = 1585 × 1.33 = 2108
Resolution vertical: X = 1585
Sensor resolution = 2108 x 1585
Sensor height = 4.00 mm
Effective megapixels = 3.34
| r = 5.33/4.00 = 1.33 |
|
Resolution vertical: X = 1585
Sensor resolution = 2108 x 1585
770 SW sensor resolution
Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 7.10
Resolution horizontal: X × r = 2310 × 1.33 = 3072
Resolution vertical: X = 2310
Sensor resolution = 3072 x 2310
Sensor height = 4.62 mm
Effective megapixels = 7.10
| r = 6.16/4.62 = 1.33 |
|
Resolution vertical: X = 2310
Sensor resolution = 3072 x 2310
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 |
DiMAGE Xt crop factor
Sensor diagonal in mm = 6.66 mm
| Crop factor = | 43.27 | = 6.5 |
| 6.66 |
770 SW 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).
DiMAGE Xt equivalent aperture
Crop factor = 6.5
Aperture = f2.8 - f3.6
35-mm equivalent aperture = (f2.8 - f3.6) × 6.5 = f18.2 - f23.4
Aperture = f2.8 - f3.6
35-mm equivalent aperture = (f2.8 - f3.6) × 6.5 = f18.2 - f23.4
770 SW equivalent aperture
Crop factor = 5.62
Aperture = f3.5 - f5.0
35-mm equivalent aperture = (f3.5 - f5.0) × 5.62 = f19.7 - f28.1
Aperture = f3.5 - f5.0
35-mm equivalent aperture = (f3.5 - f5.0) × 5.62 = f19.7 - f28.1
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.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.