Nikon Coolpix 990 vs. Nikon D1X
Comparison
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| Nikon Coolpix 990 | Nikon D1X | ||||
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Megapixels
3.10
5.30
Max. image resolution
2048 x 1536
3008 x 1960
Sensor
Sensor type
CCD
CCD
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
23.7 x 15.5 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 »
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| 1 | : | 9.69 |
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| Nikon Coolpix 990 | Nikon D1X | |
Surface area:
| 37.90 mm² | vs | 367.35 mm² |
Difference: 329.45 mm² (869%)
D1X sensor is approx. 9.69x bigger than 990 sensor.
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: 56.97 µm² (465%)
A pixel on Nikon D1X sensor is approx. 465% bigger than a pixel on Nikon 990.
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
Nikon 990
Nikon D1X
Total megapixels
3.30
5.89
Effective megapixels
3.10
5.30
Optical zoom
3x
Digital zoom
Yes
No
ISO sensitivity
Auto, 80, 100, 200, 400
125-800 in 1, 1/2 or 1/3 EV steps
RAW
Manual focus
Normal focus range
30 cm
Macro focus range
2 cm
Focal length (35mm equiv.)
38 - 115 mm
Aperture priority
Yes
Yes
Max. aperture
f2.5 - f4
Metering
256-segment Matrix, Centre weighted, Spot, Spot-AF
3D Matrix, Centre weighted, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±5 EV (in 1/3 EV, 1/2 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
Bulb+8 sec
Bulb+30 sec
Max. shutter speed
1/1000 sec
1/16000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Optical (pentaprism)
White balance presets
7
7
Screen size
1.8"
2"
Screen resolution
110,000 dots
130,000 dots
Video capture
Max. video resolution
Storage types
CompactFlash type I
CompactFlash type I, CompactFlash type II, Microdrive
USB
USB 1.0
USB 1.0
HDMI
Wireless
GPS
Battery
AA (4) batteries (NiMH recommended)
Nikon EN-EL1 Lithium-Ion included
Weight
525 g
1200 g
Dimensions
149 x 79 x 38 mm
157 x 153 x 85 mm
Year
2000
2001
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
Nikon 990 diagonal
The diagonal of 990 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 |
Nikon D1X diagonal
w = 23.70 mm
h = 15.50 mm
h = 15.50 mm
| Diagonal = √ | 23.70² + 15.50² | = 28.32 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
990 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
D1X sensor area
Width = 23.70 mm
Height = 15.50 mm
Surface area = 23.70 × 15.50 = 367.35 mm²
Height = 15.50 mm
Surface area = 23.70 × 15.50 = 367.35 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 |
990 pixel pitch
Sensor width = 7.11 mm
Sensor resolution width = 2031 pixels
Sensor resolution width = 2031 pixels
| Pixel pitch = | 7.11 | × 1000 | = 3.5 µm |
| 2031 |
D1X pixel pitch
Sensor width = 23.70 mm
Sensor resolution width = 2847 pixels
Sensor resolution width = 2847 pixels
| Pixel pitch = | 23.70 | × 1000 | = 8.32 µm |
| 2847 |
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 |
990 pixel area
Pixel pitch = 3.5 µm
Pixel area = 3.5² = 12.25 µm²
Pixel area = 3.5² = 12.25 µm²
D1X pixel area
Pixel pitch = 8.32 µm
Pixel area = 8.32² = 69.22 µm²
Pixel area = 8.32² = 69.22 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 |
990 pixel density
Sensor resolution width = 2031 pixels
Sensor width = 0.711 cm
Pixel density = (2031 / 0.711)² / 1000000 = 8.16 MP/cm²
Sensor width = 0.711 cm
Pixel density = (2031 / 0.711)² / 1000000 = 8.16 MP/cm²
D1X pixel density
Sensor resolution width = 2847 pixels
Sensor width = 2.37 cm
Pixel density = (2847 / 2.37)² / 1000000 = 1.44 MP/cm²
Sensor width = 2.37 cm
Pixel density = (2847 / 2.37)² / 1000000 = 1.44 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
990 sensor resolution
Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 3.10
Resolution horizontal: X × r = 1527 × 1.33 = 2031
Resolution vertical: X = 1527
Sensor resolution = 2031 x 1527
Sensor height = 5.33 mm
Effective megapixels = 3.10
| r = 7.11/5.33 = 1.33 |
|
Resolution vertical: X = 1527
Sensor resolution = 2031 x 1527
D1X sensor resolution
Sensor width = 23.70 mm
Sensor height = 15.50 mm
Effective megapixels = 5.30
Resolution horizontal: X × r = 1861 × 1.53 = 2847
Resolution vertical: X = 1861
Sensor resolution = 2847 x 1861
Sensor height = 15.50 mm
Effective megapixels = 5.30
| r = 23.70/15.50 = 1.53 |
|
Resolution vertical: X = 1861
Sensor resolution = 2847 x 1861
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 |
990 crop factor
Sensor diagonal in mm = 8.89 mm
| Crop factor = | 43.27 | = 4.87 |
| 8.89 |
D1X crop factor
Sensor diagonal in mm = 28.32 mm
| Crop factor = | 43.27 | = 1.53 |
| 28.32 |
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).
990 equivalent aperture
Crop factor = 4.87
Aperture = f2.5 - f4
35-mm equivalent aperture = (f2.5 - f4) × 4.87 = f12.2 - f19.5
Aperture = f2.5 - f4
35-mm equivalent aperture = (f2.5 - f4) × 4.87 = f12.2 - f19.5
D1X 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
Nikon D1X, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Nikon D1X is 1.53
Crop factor for Nikon D1X is 1.53
More comparisons of Nikon 990:
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- Nikon Coolpix 990 vs. Minolta DiMAGE Z1
- Nikon Coolpix 990 vs. Panasonic Lumix DC-ZS70
- Nikon Coolpix 990 vs. Canon PowerShot S90
- Nikon Coolpix 990 vs. Canon PowerShot A620
- Nikon Coolpix 990 vs. Nikon Coolpix 5700
- Nikon Coolpix 990 vs. Sony Cyber-shot DSC-RX1
- Nikon Coolpix 990 vs. Nikon Coolpix 3100
- Nikon Coolpix 990 vs. Sony Cyber-shot DSC-HX60
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