Sony Cybershot DSC-HX300

Specifications

Cybershot DSC-HX300 image
Brand: Sony
Model: Cybershot DSC-HX300
MegaPixels: 20.40
Sensor: 1/2.3" (~ 6.16 x 4.62 mm)
Price: Amazon, B&H Photo, Adorama

Sensor INFO

Sony Cybershot DSC-HX300 comes with a 1/2.3" (~ 6.16 x 4.62 mm) Exmor R CMOS sensor, which has a diagonal of 7.70 mm (0.3 inch) and a surface area of 28.46 mm².
Diagonal
7.70 mm
Surface area
28.5 mm²
Pixel pitch
1.18 µm
Pixel area
1.39 µm²
Pixel density
71.48 MP/cm²
If you want to know about the accuracy of these numbers, click here.
Actual sensor size:
This is the actual sensor size of Sony Cybershot DSC-HX300.
(Note: on some systems the presentation might not be 100% accurate. If in doubt, take a ruler and measure it. It should be 6.16 x 4.62 mm)
The sensor has a surface area of 28.5 mm². There are approx. 20,400,000 photosites (pixels) on this area. Pixel pitch, which is a measure of the distance between pixels, is 1.18 µm. Pixel pitch tells you the distance from the center of one pixel (photosite) to the center of the next.

Pixel or photosite area is 1.39 µm². The larger the photosite, the more light it can capture and the more information can be recorded.

Pixel density tells you how many million pixels fit or would fit in one square cm of the sensor. Sony Cybershot DSC-HX300 has a pixel density of 71.48 MP/cm².

These numbers are important in terms of assessing the overall quality of a digital camera. Generally, the bigger the sensor, pixel pitch and photosite area, and the smaller the pixel density, the better the camera. If you want to see how Sony Cybershot DSC-HX300 compares to other digital cameras, click here.

Specifications

Brand
Sony (Sony cameras)
Model
Cybershot DSC-HX300
Effective megapixels
20.40
Total megapixels
21.10
Sensor size
1/2.3" (~ 6.16 x 4.62 mm)
Sensor type
Exmor R CMOS
Sensor resolution
5208 x 3916 
Max. resolution
5184 x 3888
Min. resolution
640 x 480
Crop factor
5.62 
Optical zoom
50x
Digital zoom
Yes
ISO
Auto, 80, 100, 200, 400, 800, 1600, 3200 (6400, 12800)
Auto focus
Yes
Manual focus
Yes
Normal focus range
n/a
Macro focus range
1 cm
Focal length (35mm equiv.)
24 – 1200 mm
Aperture priority
Yes
Aperture
f2.8 - f6.3
Aperture (35mm equiv.)
f15.7 - f35.4 
Metering
Multi, Center-weighted, Spot
Exposure Compensation
-2EV - +2EV with 1/3EV steps
Shutter priority
Yes
Min. shutter speed
30 sec
Max. shutter speed
1/4000 sec
Flash modes
Auto, On, Slow Synchro, Rear Slow Synchro, Off, Advanced Flash
Built-in flash
Yes
External flash
n/a
Viewfinder
Electronic
White balance presets
7
LCD display
Yes
LCD size
3"
LCD resolution
921,600
Selftimer
Yes
Storage types
SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo/XC-HG Duo
USB
USB 2.0 (480 Mbit/sec)
Batteries
Rechargeable Battery Pack NP-BX1
Weight
650 g
Dimensions
129.6 x 93.2 x 103.2 mm
Year
2013


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Diagonal

The diagonal of Sony Cybershot DSC-HX300 image sensor is not 1/2.3 inch as you might expect, but approximately two thirds of that value - 0.3 inch. If you want to know why, see sensor sizes.

Diagonal is calculated by the use of Pythagorean theorem:
Diagonal =  w² + h²
where w = sensor width and h = sensor height


Sony Cybershot DSC-HX300 diagonal

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.

Width = 6.16 mm
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

Sony Cybershot DSC-HX300 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 5208 pixels
Pixel pitch =   6.16  × 1000  = 1.18 µm
5208


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

Sony Cybershot DSC-HX300 pixel area

Pixel pitch = 1.18 µm

Pixel area = 1.18² = 1.39 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

You could also use this formula:
Pixel density =   effective megapixels × 1000000  / 10000
sensor surface area in mm²

Sony Cybershot DSC-HX300 pixel density

Sensor resolution width = 5208 pixels
Sensor width = 0.616 cm

Pixel density = (5208 / 0.616)² / 1000000 = 71.48 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. 22.8 × 15.5 sensor for example has a ratio of 1.47.

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

Sony Cybershot DSC-HX300 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 20.40
r = 6.16/4.62 = 1.33
X =  20.40 × 1000000  = 3916
1.33
Resolution horizontal: X × r = 3916 × 1.33 = 5208
Resolution vertical: X = 3916

Sensor resolution = 5208 x 3916


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


Sony Cybershot DSC-HX300 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).

Sony Cybershot DSC-HX300 equivalent aperture

Crop factor = 5.62
Aperture = f2.8 - f6.3

35-mm equivalent aperture = (f2.8 - f6.3) × 5.62 = f15.7 - f35.4


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