Fujifilm FinePix J15 vs. Nikon Coolpix 3700

Comparison

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Fujifilm FinePix J15

Nikon Coolpix 3700

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Megapixels

8.20

3.10

Max. image resolution

3264 x 2448

2048 x 1536

Sensor

Sensor type

CCD

Sensor size

1/2.5" (~ 5.75 x 4.32 mm)

1/2.7" (~ 5.33 x 4 mm)

Sensor resolution

3302 x 2483

2031 x 1527

Diagonal

7.19 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
1.17	:	1
(ratio)

Fujifilm FinePix J15		Nikon Coolpix 3700

Surface area:

24.84 mm²

21.32 mm²

Difference: 3.52 mm² (17%)

J15 sensor is approx. 1.17x bigger than 3700 sensor.

Note: You are comparing cameras of different generations. There is a 5 year gap between Fujifilm J15 (2008) and Nikon 3700 (2003). All things being equal, newer sensor generations generally outperform the older.

Pixel pitch

1.74 µm

2.62 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: 0.88 µm (51%)

Pixel pitch of 3700 is approx. 51% higher than pixel pitch of J15.

Pixel area

3.03 µm²

6.86 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:

Pixel area difference: 3.83 µm² (126%)

A pixel on Nikon 3700 sensor is approx. 126% bigger than a pixel on Fujifilm J15.

Pixel density

32.98 MP/cm²

14.52 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: 18.46 µm (127%)

Fujifilm J15 has approx. 127% higher pixel density than Nikon 3700.

To learn about the accuracy of these numbers, click here.

Specs

Fujifilm J15

Nikon 3700

Crop factor

6.02

6.5

Total megapixels

3.30

Effective megapixels

3.10

Optical zoom

Yes

Digital zoom

Yes

ISO sensitivity

Auto, 64, 100, 200, 400, 800, 1600

Auto, (50 - 200)

RAW

Manual focus

Normal focus range

40 cm

30 cm

Macro focus range

15 cm

3 cm

Focal length (35mm equiv.)

35 - 113 mm

35 - 105 mm

Aperture priority

Max. aperture

f2.8 - f5.6

f2.8 - f4.9

Max. aperture (35mm equiv.)

f16.9 - f33.7

f18.2 - f31.9

Metering

TTL 256-zones metering

Multi, Center-weighted, Spot

Exposure compensation

±2 EV (in 1/3 EV, 1/2 EV steps)

±2 EV (in 1/3 EV steps)

Shutter priority

Min. shutter speed

8 sec

4 sec

Max. shutter speed

1/2000 sec

1/3000 sec

Built-in flash

External flash

Viewfinder

None

Optical (tunnel)

White balance presets

Screen size

2.5"

1.5"

Screen resolution

153,000 dots

134,000 dots

Video capture

Max. video resolution

Storage types

SDHC, Secure Digital

SD card

USB

USB 2.0 (480 Mbit/sec)

USB 1.0

HDMI

Wireless

GPS

Battery

Li-Ion

Nikon EN-EL5 Lithium-Ion

Weight

162 g

Dimensions

91 x 55 x 19 mm

96 x 50 x 31 mm

Year

2008

2003

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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

Fujifilm J15 diagonal

The diagonal of J15 sensor is not 1/2.5 or 0.4" (10.2 mm) as you might expect, but approximately two thirds of that value - 7.19 mm. If you want to know why, see sensor sizes.

w = 5.75 mm
h = 4.32 mm

Diagonal = √

5.75² + 4.32²

= 7.19 mm

Nikon 3700 diagonal

The diagonal of 3700 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.

J15 sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 mm²

3700 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

J15 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 3302 pixels

Pixel pitch =	5.75	× 1000	= 1.74 µm
	3302

3700 pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 2031 pixels

Pixel pitch =	5.33	× 1000	= 2.62 µm
	2031

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

J15 pixel area

Pixel pitch = 1.74 µm

Pixel area = 1.74² = 3.03 µm²

3700 pixel area

Pixel pitch = 2.62 µm

Pixel area = 2.62² = 6.86 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

J15 pixel density

Sensor resolution width = 3302 pixels
Sensor width = 0.575 cm

Pixel density = (3302 / 0.575)² / 1000000 = 32.98 MP/cm²

3700 pixel density

Sensor resolution width = 2031 pixels
Sensor width = 0.533 cm

Pixel density = (2031 / 0.533)² / 1000000 = 14.52 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

J15 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 8.20

r = 5.75/4.32 = 1.33

X = √	8.20 × 1000000	= 2483
	1.33

Resolution horizontal: X × r = 2483 × 1.33 = 3302
Resolution vertical: X = 2483

Sensor resolution = 3302 x 2483

3700 sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 3.10

r = 5.33/4.00 = 1.33

X = √	3.10 × 1000000	= 1527
	1.33

Resolution horizontal: X × r = 1527 × 1.33 = 2031
Resolution vertical: X = 1527

Sensor resolution = 2031 x 1527

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

J15 crop factor

Sensor diagonal in mm = 7.19 mm

Crop factor =	43.27	= 6.02
	7.19

3700 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).

J15 equivalent aperture

Crop factor = 6.02
Aperture = f2.8 - f5.6

35-mm equivalent aperture = (f2.8 - f5.6) × 6.02 = f16.9 - f33.7

3700 equivalent aperture

Crop factor = 6.5
Aperture = f2.8 - f4.9

35-mm equivalent aperture = (f2.8 - f4.9) × 6.5 = f18.2 - f31.9

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