Casio Exilim EX-Z750 vs. Casio Exilim EX-Z850
Comparison
change cameras » | |||||
|
vs |
|
|||
Casio Exilim EX-Z750 | Casio Exilim EX-Z850 | ||||
check price » | check price » |
Megapixels
7.10
8.00
Max. image resolution
3072 x 2304
3264 x 2448
Sensor
Sensor type
CCD
CCD
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
1/1.8" (~ 7.11 x 5.33 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 |
(ratio) | ||
Casio Exilim EX-Z750 | Casio Exilim EX-Z850 |
Surface area:
37.90 mm² | vs | 37.90 mm² |
Difference: 0 mm² (0%)
Z750 and Z850 sensors are the same size.
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: 0.59 µm² (12%)
A pixel on Casio Z750 sensor is approx. 12% bigger than a pixel on Casio Z850.
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
Casio Z750
Casio Z850
Total megapixels
7.40
8.30
Effective megapixels
7.10
8.00
Optical zoom
3x
3x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 50, 100, 200, 400
Auto, 50, 100, 200, 400, 1600
RAW
Manual focus
Normal focus range
40 cm
40 cm
Macro focus range
10 cm
10 cm
Focal length (35mm equiv.)
38 - 114 mm
38 - 114 mm
Aperture priority
No
Yes
Max. aperture
f2.8 - f5.1
f2.8 - f5.1
Metering
Multi, Center-weighted, Spot
Centre weighted, Multi-pattern, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
60 sec
60 sec
Max. shutter speed
1/1600 sec
1/1600 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Optical (tunnel)
White balance presets
6
5
Screen size
2.5"
2.5"
Screen resolution
115,200 dots
115,200 dots
Video capture
Max. video resolution
Storage types
SD/MMC card, Internal
MultiMedia, Secure Digital
USB
USB 1.0
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Lithium-Ion rechargeable
Lithium-Ion rechargeable
Weight
165 g
130 g
Dimensions
89 x 59 x 22 mm
89 x 58.5 x 23.7 mm
Year
2005
2006
Choose cameras to compare
Popular comparisons:
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z850
- Casio Exilim EX-Z750 vs. Sony Cyber-shot DSC-WX100
- Casio Exilim EX-Z750 vs. Canon PowerShot S100
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z800
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z600
- Casio Exilim EX-Z750 vs. Sony Cyber-shot DSC-RX100 II
- Casio Exilim EX-Z750 vs. Sony Cyber-shot DSC-T70
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z700
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z110
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z90
- Casio Exilim EX-Z750 vs. Sony Cyber-shot DSC-S750
Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
Diagonal = √ | w² + h² |
Casio Z750 diagonal
The diagonal of Z750 sensor is not 1/1.8 or 0.56" (14.1 mm) as you might expect, but approximately two thirds of
that value - 8.89 mm. If you want to know why, see
sensor sizes.
w = 7.11 mm
h = 5.33 mm
w = 7.11 mm
h = 5.33 mm
Diagonal = √ | 7.11² + 5.33² | = 8.89 mm |
Casio Z850 diagonal
The diagonal of Z850 sensor is not 1/1.8 or 0.56" (14.1 mm) as you might expect, but approximately two thirds of
that value - 8.89 mm. If you want to know why, see
sensor sizes.
w = 7.11 mm
h = 5.33 mm
w = 7.11 mm
h = 5.33 mm
Diagonal = √ | 7.11² + 5.33² | = 8.89 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
Z750 sensor area
Width = 7.11 mm
Height = 5.33 mm
Surface area = 7.11 × 5.33 = 37.90 mm²
Height = 5.33 mm
Surface area = 7.11 × 5.33 = 37.90 mm²
Z850 sensor area
Width = 7.11 mm
Height = 5.33 mm
Surface area = 7.11 × 5.33 = 37.90 mm²
Height = 5.33 mm
Surface area = 7.11 × 5.33 = 37.90 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 |
Z750 pixel pitch
Sensor width = 7.11 mm
Sensor resolution width = 3072 pixels
Sensor resolution width = 3072 pixels
Pixel pitch = | 7.11 | × 1000 | = 2.31 µm |
3072 |
Z850 pixel pitch
Sensor width = 7.11 mm
Sensor resolution width = 3262 pixels
Sensor resolution width = 3262 pixels
Pixel pitch = | 7.11 | × 1000 | = 2.18 µm |
3262 |
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 |
Z750 pixel area
Pixel pitch = 2.31 µm
Pixel area = 2.31² = 5.34 µm²
Pixel area = 2.31² = 5.34 µm²
Z850 pixel area
Pixel pitch = 2.18 µm
Pixel area = 2.18² = 4.75 µm²
Pixel area = 2.18² = 4.75 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 |
Z750 pixel density
Sensor resolution width = 3072 pixels
Sensor width = 0.711 cm
Pixel density = (3072 / 0.711)² / 1000000 = 18.67 MP/cm²
Sensor width = 0.711 cm
Pixel density = (3072 / 0.711)² / 1000000 = 18.67 MP/cm²
Z850 pixel density
Sensor resolution width = 3262 pixels
Sensor width = 0.711 cm
Pixel density = (3262 / 0.711)² / 1000000 = 21.05 MP/cm²
Sensor width = 0.711 cm
Pixel density = (3262 / 0.711)² / 1000000 = 21.05 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
Z750 sensor resolution
Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 7.10
Resolution horizontal: X × r = 2310 × 1.33 = 3072
Resolution vertical: X = 2310
Sensor resolution = 3072 x 2310
Sensor height = 5.33 mm
Effective megapixels = 7.10
r = 7.11/5.33 = 1.33 |
|
Resolution vertical: X = 2310
Sensor resolution = 3072 x 2310
Z850 sensor resolution
Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 8.00
Resolution horizontal: X × r = 2453 × 1.33 = 3262
Resolution vertical: X = 2453
Sensor resolution = 3262 x 2453
Sensor height = 5.33 mm
Effective megapixels = 8.00
r = 7.11/5.33 = 1.33 |
|
Resolution vertical: X = 2453
Sensor resolution = 3262 x 2453
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 |
Z750 crop factor
Sensor diagonal in mm = 8.89 mm
Crop factor = | 43.27 | = 4.87 |
8.89 |
Z850 crop factor
Sensor diagonal in mm = 8.89 mm
Crop factor = | 43.27 | = 4.87 |
8.89 |
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).
Z750 equivalent aperture
Crop factor = 4.87
Aperture = f2.8 - f5.1
35-mm equivalent aperture = (f2.8 - f5.1) × 4.87 = f13.6 - f24.8
Aperture = f2.8 - f5.1
35-mm equivalent aperture = (f2.8 - f5.1) × 4.87 = f13.6 - f24.8
Z850 equivalent aperture
Crop factor = 4.87
Aperture = f2.8 - f5.1
35-mm equivalent aperture = (f2.8 - f5.1) × 4.87 = f13.6 - f24.8
Aperture = f2.8 - f5.1
35-mm equivalent aperture = (f2.8 - f5.1) × 4.87 = f13.6 - f24.8
More comparisons of Casio Z750:
- Casio Exilim EX-Z750 vs. Kodak EasyShare Z1085 IS
- Casio Exilim EX-Z750 vs. Canon Digital IXUS 980 IS
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z300
- Casio Exilim EX-Z750 vs. Casio Exilim EX-H30
- Casio Exilim EX-Z750 vs. Casio QV-R51
- Casio Exilim EX-Z750 vs. Canon PowerShot SX230 HS
- Casio Exilim EX-Z750 vs. Sony Cyber-shot DSC-W90
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z10
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z120
- Casio Exilim EX-Z750 vs. Casio Exilim EX-Z150
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.