Kodak PixPro AZ521

Specifications

PixPro AZ521 image
Brand: Kodak
Model: PixPro AZ521
MegaPixels: 16.38
Sensor: 1/2.3" (~ 6.16 x 4.62 mm)
Price: Amazon, B&H Photo, Adorama

Sensor INFO

Kodak PixPro AZ521 comes with a 1/2.3" (~ 6.16 x 4.62 mm) 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
1.32 µm
Pixel area
1.74 µm²
Pixel density
57.4 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 Kodak PixPro AZ521.
(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. 16,380,000 photosites (pixels) on this area. Pixel pitch, which is a measure of the distance between pixels, is 1.32 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 1.74 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. Kodak PixPro AZ521 has a pixel density of 57.4 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 Kodak PixPro AZ521 compares to other digital cameras, click here.

Specifications

Brand
Kodak (Kodak cameras)
Model
PixPro AZ521
Effective megapixels
16.38
Total megapixels
16.79
Sensor size
1/2.3" (~ 6.16 x 4.62 mm)
Sensor type
CMOS
Sensor resolution
4667 x 3509 
Max. resolution
4608 x 3456
Min. resolution
640 x 480
Crop factor
5.62 
Optical zoom
52x
Digital zoom
Yes
ISO
Auto, 100, 200, 400, 800, 1600, 3200
Auto focus
Yes
Manual focus
n/a
Normal focus range
60 cm
Macro focus range
1 cm
Focal length (35mm equiv.)
24 - 1248 mm
Aperture priority
Yes
Aperture
f2.8 - f5.6
Aperture (35mm equiv.)
f15.7 - f31.5 
Metering
Multi, Center-weighted, Spot
Exposure Compensation
± 3 EV in steps of 1/3
Shutter priority
Yes
Min. shutter speed
30 sec
Max. shutter speed
1/2000 sec
Flash modes
Auto, Red-Eye Reduction, Forced Flash, Slow Synchro
Built-in flash
Yes
External flash
n/a
Viewfinder
None
White balance presets
6
LCD display
Yes
LCD size
3"
LCD resolution
460,000
Selftimer
Yes
Storage types
SD/SDHC
USB
USB 2.0
Batteries
Rechargeable Li-ion Battery LB-060
Weight
503 g
Dimensions
121.3 x 85.8 x 97.5 mm
Year
2013


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Diagonal

The diagonal of Kodak PixPro AZ521 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


Kodak PixPro AZ521 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

Kodak PixPro AZ521 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4667 pixels
Pixel pitch =   6.16  × 1000  = 1.32 µm
4667


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

Kodak PixPro AZ521 pixel area

Pixel pitch = 1.32 µm

Pixel area = 1.32² = 1.74 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

Kodak PixPro AZ521 pixel density

Sensor resolution width = 4667 pixels
Sensor width = 0.616 cm

Pixel density = (4667 / 0.616)² / 1000000 = 57.4 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

Kodak PixPro AZ521 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 16.38
r = 6.16/4.62 = 1.33
X =  16.38 × 1000000  = 3509
1.33
Resolution horizontal: X × r = 3509 × 1.33 = 4667
Resolution vertical: X = 3509

Sensor resolution = 4667 x 3509


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


Kodak PixPro AZ521 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).

Kodak PixPro AZ521 equivalent aperture

Crop factor = 5.62
Aperture = f2.8 - f5.6

35-mm equivalent aperture = (f2.8 - f5.6) × 5.62 = f15.7 - f31.5


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