Nikon Coolpix 775 vs. Nikon Coolpix L11

Comparison

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Nikon Coolpix 775

Nikon Coolpix L11

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Megapixels

1.90

6.00

Max. image resolution

1600 x 1200

2816 x 2112

Sensor

Sensor type

CCD

Sensor size

1/2.7" (~ 5.33 x 4 mm)

1/2.5" (~ 5.75 x 4.32 mm)

Sensor resolution

1589 x 1195

2825 x 2124

Diagonal

6.66 mm

7.19 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	:	1.17
(ratio)

Nikon Coolpix 775		Nikon Coolpix L11

Surface area:

21.32 mm²

24.84 mm²

Difference: 3.52 mm² (17%)

L11 sensor is approx. 1.17x bigger than 775 sensor.

Note: You are comparing sensors of very different generations. There is a gap of 6 years between Nikon 775 (2001) and Nikon L11 (2007). Six years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.

Pixel pitch

3.35 µm

2.04 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: 1.31 µm (64%)

Pixel pitch of 775 is approx. 64% higher than pixel pitch of L11.

Pixel area

11.22 µm²

4.16 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: 7.06 µm² (170%)

A pixel on Nikon 775 sensor is approx. 170% bigger than a pixel on Nikon L11.

Pixel density

8.89 MP/cm²

24.14 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: 15.25 µm (172%)

Nikon L11 has approx. 172% higher pixel density than Nikon 775.

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

Specs

Nikon 775

Nikon L11

Crop factor

6.5

6.02

Total megapixels

2.10

6.20

Effective megapixels

1.90

6.00

Optical zoom

Digital zoom

Yes

ISO sensitivity

Auto, (100)

Auto, 64 - 800

RAW

Manual focus

Normal focus range

30 cm

40 cm

Macro focus range

4 cm

15 cm

Focal length (35mm equiv.)

38 - 115 mm

38 - 113 mm

Aperture priority

Max. aperture

f2.8 - f4.9

f2.8 - f5.2

Max. aperture (35mm equiv.)

f18.2 - f31.9

f16.9 - f31.3

Metering

Multi, Center-weighted, Spot

256-segment Matrix, Centre weighted, Spot-AF

Exposure compensation

±2 EV (in 1/3 EV steps)

Shutter priority

Min. shutter speed

1 sec

4 sec

Max. shutter speed

1/1000 sec

1/2000 sec

Built-in flash

External flash

Viewfinder

Optical (tunnel)

None

White balance presets

Screen size

1.5"

2.4"

Screen resolution

110,000 dots

115,000 dots

Video capture

Max. video resolution

Storage types

Compact Flash (Type I only)

Secure Digital

USB

USB 1.0

HDMI

Wireless

GPS

Battery

Nikon EN-EL1 Lithium-Ion included

AA (2) batteries (NiMH recommended)

Weight

230 g

125 g

Dimensions

87 x 67 x 44 mm

89.5 x 60.5 x 27 mm

Year

2001

2007

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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 775 diagonal

The diagonal of 775 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 L11 diagonal

The diagonal of L11 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

Surface area

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

775 sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 mm²

L11 sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 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

775 pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 1589 pixels

Pixel pitch =	5.33	× 1000	= 3.35 µm
	1589

L11 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2825 pixels

Pixel pitch =	5.75	× 1000	= 2.04 µm
	2825

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

775 pixel area

Pixel pitch = 3.35 µm

Pixel area = 3.35² = 11.22 µm²

L11 pixel area

Pixel pitch = 2.04 µm

Pixel area = 2.04² = 4.16 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

775 pixel density

Sensor resolution width = 1589 pixels
Sensor width = 0.533 cm

Pixel density = (1589 / 0.533)² / 1000000 = 8.89 MP/cm²

L11 pixel density

Sensor resolution width = 2825 pixels
Sensor width = 0.575 cm

Pixel density = (2825 / 0.575)² / 1000000 = 24.14 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

775 sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 1.90

r = 5.33/4.00 = 1.33

X = √	1.90 × 1000000	= 1195
	1.33

Resolution horizontal: X × r = 1195 × 1.33 = 1589
Resolution vertical: X = 1195

Sensor resolution = 1589 x 1195

L11 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 6.00

r = 5.75/4.32 = 1.33

X = √	6.00 × 1000000	= 2124
	1.33

Resolution horizontal: X × r = 2124 × 1.33 = 2825
Resolution vertical: X = 2124

Sensor resolution = 2825 x 2124

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

775 crop factor

Sensor diagonal in mm = 6.66 mm

Crop factor =	43.27	= 6.5
	6.66

L11 crop factor

Sensor diagonal in mm = 7.19 mm

Crop factor =	43.27	= 6.02
	7.19

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).

775 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

L11 equivalent aperture

Crop factor = 6.02
Aperture = f2.8 - f5.2

35-mm equivalent aperture = (f2.8 - f5.2) × 6.02 = f16.9 - f31.3

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