Pentax Optio LS465 vs. Pentax Optio I-10

Comparison

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Pentax Optio LS465

Pentax Optio I-10

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Megapixels

16.00

12.10

Max. image resolution

4928 x 3264

4000 x 3000

Sensor

Sensor type

CMOS

CCD

Sensor size

23.7 x 15.7 mm

1/2.3" (~ 6.16 x 4.62 mm)

Sensor resolution

4915 x 3255

4011 x 3016

Diagonal

28.43 mm

7.70 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
13.07	:	1
(ratio)

Pentax Optio LS465		Pentax Optio I-10

Surface area:

372.09 mm²

28.46 mm²

Difference: 343.63 mm² (1207%)

LS465 sensor is approx. 13.07x bigger than I-10 sensor.

Note: You are comparing cameras of different generations. There is a 2 year gap between Pentax LS465 (2012) and Pentax I-10 (2010). All things being equal, newer sensor generations generally outperform the older.

Pixel pitch

4.82 µm

1.54 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: 3.28 µm (213%)

Pixel pitch of LS465 is approx. 213% higher than pixel pitch of I-10.

Pixel area

23.23 µm²

2.37 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: 20.86 µm² (880%)

A pixel on Pentax LS465 sensor is approx. 880% bigger than a pixel on Pentax I-10.

Pixel density

4.3 MP/cm²

42.4 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: 38.1 µm (886%)

Pentax I-10 has approx. 886% higher pixel density than Pentax LS465.

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

Specs

Pentax LS465

Pentax I-10

Crop factor

1.52

5.62

Total megapixels

12.40

Effective megapixels

12.10

Optical zoom

Digital zoom

Yes

ISO sensitivity

Auto, 100 to 12800, in 1, 1/2, 1/3 EV steps 25600 Extended)

Auto, 80 - 6400

RAW

Manual focus

Normal focus range

40 cm

Macro focus range

10 cm

Focal length (35mm equiv.)

28 - 140 mm

Aperture priority

Yes

Max. aperture

f3.5 - f5.9

Max. aperture (35mm equiv.)

n/a

f19.7 - f33.2

Metering

Multi, Center-weighted, Spot

Centre weighted, Multi-segment, Spot

Exposure compensation

±5 EV (in 1/3 EV, 1/2 EV steps)

±2 EV (in 1/3 EV steps)

Shutter priority

Yes

Min. shutter speed

30 sec

4 sec

Max. shutter speed

1/6000 sec

1/2000 sec

Built-in flash

External flash

Viewfinder

Optical (pentaprism)

None

White balance presets

Screen size

2.7"

Screen resolution

921,000 dots

230,000 dots

Video capture

Max. video resolution

Storage types

SD/SDHC/SDXC

SDHC, Secure Digital

USB

USB 2.0 (480 Mbit/sec)

HDMI

Wireless

GPS

Battery

Lithium-Ion D-LI109 rechargeable battery

Lithium-Ion D-LI92 rechargeable battery

Weight

650 g

132 g

Dimensions

130 x 97 x 71 mm

101 x 65 x 28 mm

Year

2012

2010

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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

Pentax LS465 diagonal

w = 23.70 mm
h = 15.70 mm

Diagonal = √

23.70² + 15.70²

= 28.43 mm

Pentax I-10 diagonal

The diagonal of I-10 sensor is not 1/2.3 or 0.43" (11 mm) as you might expect, but approximately two thirds of that value - 7.7 mm. If you want to know why, see sensor sizes.

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.

LS465 sensor area

Width = 23.70 mm
Height = 15.70 mm

Surface area = 23.70 × 15.70 = 372.09 mm²

I-10 sensor area

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

LS465 pixel pitch

Sensor width = 23.70 mm
Sensor resolution width = 4915 pixels

Pixel pitch =	23.70	× 1000	= 4.82 µm
	4915

I-10 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4011 pixels

Pixel pitch =	6.16	× 1000	= 1.54 µm
	4011

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

LS465 pixel area

Pixel pitch = 4.82 µm

Pixel area = 4.82² = 23.23 µm²

I-10 pixel area

Pixel pitch = 1.54 µm

Pixel area = 1.54² = 2.37 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

LS465 pixel density

Sensor resolution width = 4915 pixels
Sensor width = 2.37 cm

Pixel density = (4915 / 2.37)² / 1000000 = 4.3 MP/cm²

I-10 pixel density

Sensor resolution width = 4011 pixels
Sensor width = 0.616 cm

Pixel density = (4011 / 0.616)² / 1000000 = 42.4 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.

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

LS465 sensor resolution

Sensor width = 23.70 mm
Sensor height = 15.70 mm
Effective megapixels = 16.00

r = 23.70/15.70 = 1.51

X = √	16.00 × 1000000	= 3255
	1.51

Resolution horizontal: X × r = 3255 × 1.51 = 4915
Resolution vertical: X = 3255

Sensor resolution = 4915 x 3255

I-10 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 12.10

r = 6.16/4.62 = 1.33

X = √	12.10 × 1000000	= 3016
	1.33

Resolution horizontal: X × r = 3016 × 1.33 = 4011
Resolution vertical: X = 3016

Sensor resolution = 4011 x 3016

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

LS465 crop factor

Sensor diagonal in mm = 28.43 mm

Crop factor =	43.27	= 1.52
	28.43

I-10 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).

LS465 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 Pentax LS465, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Pentax LS465 is 1.52

I-10 equivalent aperture

Crop factor = 5.62
Aperture = f3.5 - f5.9

35-mm equivalent aperture = (f3.5 - f5.9) × 5.62 = f19.7 - f33.2

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