Nikon Coolpix 900 vs. Nikon Coolpix 900s

Comparison

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Coolpix 900 image
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Coolpix 900s image
Nikon Coolpix 900 Nikon Coolpix 900s
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Megapixels
1.20
1.20
Max. image resolution
1280 x 960
1280 x 960

Sensor

Sensor type
CCD
CCD
Sensor size
1/2.7" (~ 5.33 x 4 mm)
1/2.7" (~ 5.33 x 4 mm)
Sensor resolution
1264 x 950
1264 x 950
Diagonal
6.66 mm
6.66 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 »

Actual sensor size

Note: Actual size is set to screen → change »
vs
1 : 1
(ratio)
Nikon Coolpix 900 Nikon Coolpix 900s
Surface area:
21.32 mm² vs 21.32 mm²
Difference: 0 mm² (0%)
900 and 900s sensors are the same size.
Pixel pitch
4.22 µm
4.22 µm
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.
Difference: 0 µm (0%)
900 and 900s have the same pixel pitch.
Pixel area
17.81 µm²
17.81 µm²
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.
Relative pixel sizes:
vs
Pixel area difference: 0 µm² (0%)
Nikon 900 and Nikon 900s have the same pixel area.
Pixel density
5.62 MP/cm²
5.62 MP/cm²
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.
Difference: 0 µm (0%)
Nikon 900 and Nikon 900s have the same pixel density.
To learn about the accuracy of these numbers, click here.



Specs

Nikon 900
Nikon 900s
Crop factor
6.5
6.5
Total megapixels
1.30
1.30
Effective megapixels
1.20
1.20
Optical zoom
3x
3x
Digital zoom
Yes
Yes
ISO sensitivity
64
64
RAW
Manual focus
Normal focus range
50 cm
50 cm
Macro focus range
8 cm
8 cm
Focal length (35mm equiv.)
38 - 115 mm
38 - 115 mm
Aperture priority
No
No
Max. aperture
f2.4 - f6.6
f2.4 - f4.4
Max. aperture (35mm equiv.)
f15.6 - f42.9
f15.6 - f28.6
Metering
Centre weighted, Matrix, Spot
Centre weighted, Matrix, Spot
Exposure compensation
±2 EV (in 1/2 EV steps)
±2 EV (in 1/2 EV steps)
Shutter priority
No
No
Min. shutter speed
1/4 sec
Bulb+60 sec
Max. shutter speed
1/750 sec
1/750 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Optical (tunnel)
White balance presets
2
4
Screen size
2"
2"
Screen resolution
130,000 dots
130,000 dots
Video capture
Max. video resolution
Storage types
CompactFlash type I
CompactFlash type I
USB
USB 1.0
USB 1.0
HDMI
Wireless
GPS
Battery
AA (4) batteries (NiMH recommended)
AA (4) batteries (NiMH recommended)
Weight
360 g
360 g
Dimensions
157 x 75 x 35 mm
157 x 75 x 35 mm
Year
1998
1998




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Diagonal

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

Nikon 900 diagonal

The diagonal of 900 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
Diagonal =  5.33² + 4.00²   = 6.66 mm

Nikon 900s diagonal

The diagonal of 900s 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
Diagonal =  5.33² + 4.00²   = 6.66 mm


Surface area

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

900 sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 mm²

900s sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 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

900 pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 1264 pixels
Pixel pitch =   5.33  × 1000  = 4.22 µm
1264

900s pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 1264 pixels
Pixel pitch =   5.33  × 1000  = 4.22 µm
1264


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

900 pixel area

Pixel pitch = 4.22 µm

Pixel area = 4.22² = 17.81 µm²

900s pixel area

Pixel pitch = 4.22 µm

Pixel area = 4.22² = 17.81 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

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

900 pixel density

Sensor resolution width = 1264 pixels
Sensor width = 0.533 cm

Pixel density = (1264 / 0.533)² / 1000000 = 5.62 MP/cm²

900s pixel density

Sensor resolution width = 1264 pixels
Sensor width = 0.533 cm

Pixel density = (1264 / 0.533)² / 1000000 = 5.62 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:
(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

900 sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 1.20
r = 5.33/4.00 = 1.33
X =  1.20 × 1000000  = 950
1.33
Resolution horizontal: X × r = 950 × 1.33 = 1264
Resolution vertical: X = 950

Sensor resolution = 1264 x 950

900s sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 1.20
r = 5.33/4.00 = 1.33
X =  1.20 × 1000000  = 950
1.33
Resolution horizontal: X × r = 950 × 1.33 = 1264
Resolution vertical: X = 950

Sensor resolution = 1264 x 950


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


900 crop factor

Sensor diagonal in mm = 6.66 mm
Crop factor =   43.27  = 6.5
6.66

900s crop factor

Sensor diagonal in mm = 6.66 mm
Crop factor =   43.27  = 6.5
6.66

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).

900 equivalent aperture

Crop factor = 6.5
Aperture = f2.4 - f6.6

35-mm equivalent aperture = (f2.4 - f6.6) × 6.5 = f15.6 - f42.9

900s equivalent aperture

Crop factor = 6.5
Aperture = f2.4 - f4.4

35-mm equivalent aperture = (f2.4 - f4.4) × 6.5 = f15.6 - f28.6

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