Sony Alpha NEX-5

Specs

Brand:	Sony
Model:	Alpha NEX-5
Megapixels:	14.20
Sensor:	23.4 x 15.6 mm
Price:	check here »

Sensor info

Sony Alpha NEX-5 comes with a 23.4 x 15.6 mm CMOS sensor, which has a diagonal of28.12 mm (1.11") and a surface area of365.04 mm².

Diagonal

28.12 mm

[details]

Surface area

365 mm²

[details]

Pixel pitch

5.07 µm

[details]

Pixel area

25.7 µm²

[details]

Pixel density

3.89 MP/cm²

[details]

If you want to know about the accuracy of these numbers,click here.

Actual sensor size

Note: Actual size is set to screen →change »

This is the actual size of theAlpha NEX-5 sensor:23.4 x 15.6 mm

The sensor has a surface area of365 mm². There are approx. 14,200,000 photosites (pixels) on this area. Pixel pitch, which is a measure of the distance between pixels, is5.07 µm. Pixel pitch tells you the distance from the center of one pixel (photosite) to the center of the next.

Pixel or photosite area is25.7 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 Alpha NEX-5 has a pixel density of3.89 MP/cm².

These numbers are important in terms of assessing the overall quality of a digital camera. Generally, the bigger (and newer) the sensor, pixel pitch and photosite area, and the smaller the pixel density, the better the camera. If you want to see how Alpha NEX-5 compares to other cameras,click here.

Specifications

Brand:	Sony
Model:	Alpha NEX-5
Effective megapixels:	14.20
Total megapixels:	14.60
Sensor size:	23.4 x 15.6 mm
Sensor type:	CMOS
Sensor resolution:	4616 x 3077
Max. image resolution:	4592 x 3056
Crop factor:	1.54
Optical zoom:
Digital zoom:	No
ISO:	Auto, 200, 400, 800, 1600, 3200, 6400, 12800
RAW support:
Manual focus:
Normal focus range:
Macro focus range:
Focal length (35mm equiv.):
Aperture priority:	Yes
Max aperture:
Max. aperture (35mm equiv.):	n/a
Depth of field:	simulate →
Metering:	Multi, Center-weighted, Spot
Exposure Compensation:	±2 EV (in 1/3 EV steps)
Shutter priority:	Yes
Min. shutter speed:	30 sec
Max. shutter speed:	1/4000 sec
Built-in flash:
External flash:
Viewfinder:	None
White balance presets:	6
Screen size:	3"
Screen resolution:	920,000 dots
Video capture:
Storage types:	SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo
USB:	USB 2.0 (480 Mbit/sec)
HDMI:
Wireless:
GPS:
Battery:	Lithium-Ion NP-FW50 rechargeable battery
Weight:	287 g
Dimensions:	111 x 59 x 38 mm
Year:	2010

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Diagonal

Diagonal is calculated by the use of Pythagorean theorem:

Diagonal =√

w² +h²

wherew = sensor width andh = sensor height

Sony Alpha NEX-5 diagonal:

w = 23.40 mm
h = 15.60 mm

Diagonal =√

23.40² + 15.60²

=28.12 mm

Surface area

Surface area is calculated by multiplying the width and the height of a sensor.

Width = 23.40 mm
Height = 15.60 mm

Surface area = 23.40 × 15.60 =365.04 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 Alpha NEX-5 pixel pitch:

Sensor width = 23.40 mm
Sensor resolution width = 4616 pixels

Pixel pitch =	23.40	× 1000	=5.07 µm
	4616

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 Alpha NEX-5 pixel area:

Pixel pitch = 5.07 µm

Pixel area = 5.07² =25.7 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 Alpha NEX-5 pixel density:

Sensor resolution width = 4616 pixels
Sensor width = 2.34 cm

Pixel density = (4616 / 2.34)² / 1000000 =3.89 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 theX from the formula below, whereX is a vertical number of pixels:

(X ×r) ×X =effective megapixels ×1000000 →

X =√	effective megapixels ×1000000
	r

3. To get sensor resolution we then multiplyX with the corresponding ratio:

Resolution horizontal:X ×r
Resolution vertical:X

Sony Alpha NEX-5 sensor resolution:

Sensor width = 23.40 mm
Sensor height = 15.60 mm
Effective megapixels = 14.20

r = 23.40/15.60 =1.5

X =√	14.20 ×1000000	= 3077
	1.5

Resolution horizontal: X × r = 3077 × 1.5 = 4616
Resolution vertical: X = 3077

Sensor resolution =4616 x 3077

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 Alpha NEX-5 crop factor:

Sensor diagonal = 28.12 mm

Crop factor =	43.27	= 1.54
	28.12

35 mm equivalent aperture

Equivalent aperture (in 135 film terms) is calculated by multiplying lens aperturewith crop factor (a.k.a. focal length multiplier).

Sony Alpha NEX-5 equivalent aperture:

Aperture is a lens characteristic, so it's calculated only for fixed lens cameras. If you want to know the equivalent aperture for Sony Alpha NEX-5, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Sony Alpha NEX-5 is1.54

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Sony Alpha NEX-5

Specs

Sensor info

Actual sensor size

Specifications

Compare Alpha NEX-5 with another camera

Popular comparisons:

Diagonal

Sony Alpha NEX-5 diagonal:

Surface area

Pixel pitch

Sony Alpha NEX-5 pixel pitch:

Pixel area

Sony Alpha NEX-5 pixel area:

Pixel density

Sony Alpha NEX-5 pixel density:

Sensor resolution

Sony Alpha NEX-5 sensor resolution:

Crop factor

Sony Alpha NEX-5 crop factor:

35 mm equivalent aperture

Sony Alpha NEX-5 equivalent aperture:

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