Kodak EasyShare DX3215 vs. Kodak EasyShare DX3500

Comparison

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Kodak EasyShare DX3215

Kodak EasyShare DX3500

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Megapixels

1.20

2.20

Max. image resolution

1280 x 960

1800 x 1200

Sensor

Sensor type

CCD

Sensor size

1/2.7" (~ 5.33 x 4 mm)

1/2" (~ 6.4 x 4.8 mm)

Sensor resolution

1264 x 950

1710 x 1286

Diagonal

6.66 mm

8.00 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	:	1.44
(ratio)

Kodak EasyShare DX3215		Kodak EasyShare DX3500

Surface area:

21.32 mm²

30.72 mm²

Difference: 9.4 mm² (44%)

DX3500 sensor is approx. 1.44x bigger than DX3215 sensor.

Pixel pitch

4.22 µm

3.74 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: 0.48 µm (13%)

Pixel pitch of DX3215 is approx. 13% higher than pixel pitch of DX3500.

Pixel area

17.81 µm²

13.99 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: 3.82 µm² (27%)

A pixel on Kodak DX3215 sensor is approx. 27% bigger than a pixel on Kodak DX3500.

Pixel density

5.62 MP/cm²

7.14 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: 1.52 µm (27%)

Kodak DX3500 has approx. 27% higher pixel density than Kodak DX3215.

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

Specs

Kodak DX3215

Kodak DX3500

Crop factor

6.5

5.41

Total megapixels

1.30

2.30

Effective megapixels

1.20

2.20

Optical zoom

Digital zoom

Yes

ISO sensitivity

Auto, (100 - 200)

RAW

Manual focus

Normal focus range

75 cm

Macro focus range

22 cm

Focal length (35mm equiv.)

30 - 60 mm

38 mm

Aperture priority

Max. aperture

f4.5 - f9.0

f3.3 - f4.5

Max. aperture (35mm equiv.)

f29.3 - f58.5

f17.9 - f24.3

Metering

Multi, Center-weighted, Spot

Exposure compensation

±2 EV (in 1/2 EV steps)

±3 EV (in 1/3 EV, 1/2 EV steps)

Shutter priority

Min. shutter speed

1/4 sec

1/8 sec

Max. shutter speed

1/1000 sec

1/1200 sec

Built-in flash

External flash

Viewfinder

Optical (tunnel)

White balance presets

Screen size

1.6"

1.8"

Screen resolution

72,000 dots

Video capture

Max. video resolution

Storage types

SD/MMC card, Internal

Compact Flash Type I, Internal

USB

USB 1.0

HDMI

Wireless

GPS

Battery

AA (2) batteries (NiMH recommended)

Weight

260 g

225 g

Dimensions

121 x 70 x 46 mm

120 x 74 x 50 mm

Year

2001

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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

Kodak DX3215 diagonal

The diagonal of DX3215 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

Kodak DX3500 diagonal

The diagonal of DX3500 sensor is not 1/2 or 0.5" (12.7 mm) as you might expect, but approximately two thirds of that value - 8 mm. If you want to know why, see sensor sizes.

w = 6.40 mm
h = 4.80 mm

Diagonal = √

6.40² + 4.80²

= 8.00 mm

Surface area

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

DX3215 sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 mm²

DX3500 sensor area

Width = 6.40 mm
Height = 4.80 mm

Surface area = 6.40 × 4.80 = 30.72 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

DX3215 pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 1264 pixels

Pixel pitch =	5.33	× 1000	= 4.22 µm
	1264

DX3500 pixel pitch

Sensor width = 6.40 mm
Sensor resolution width = 1710 pixels

Pixel pitch =	6.40	× 1000	= 3.74 µm
	1710

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

DX3215 pixel area

Pixel pitch = 4.22 µm

Pixel area = 4.22² = 17.81 µm²

DX3500 pixel area

Pixel pitch = 3.74 µm

Pixel area = 3.74² = 13.99 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

DX3215 pixel density

Sensor resolution width = 1264 pixels
Sensor width = 0.533 cm

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

DX3500 pixel density

Sensor resolution width = 1710 pixels
Sensor width = 0.64 cm

Pixel density = (1710 / 0.64)² / 1000000 = 7.14 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

DX3215 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

DX3500 sensor resolution

Sensor width = 6.40 mm
Sensor height = 4.80 mm
Effective megapixels = 2.20

r = 6.40/4.80 = 1.33

X = √	2.20 × 1000000	= 1286
	1.33

Resolution horizontal: X × r = 1286 × 1.33 = 1710
Resolution vertical: X = 1286

Sensor resolution = 1710 x 1286

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

DX3215 crop factor

Sensor diagonal in mm = 6.66 mm

Crop factor =	43.27	= 6.5
	6.66

DX3500 crop factor

Sensor diagonal in mm = 8.00 mm

Crop factor =	43.27	= 5.41
	8.00

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).

DX3215 equivalent aperture

Crop factor = 6.5
Aperture = f4.5 - f9.0

35-mm equivalent aperture = (f4.5 - f9.0) × 6.5 = f29.3 - f58.5

DX3500 equivalent aperture

Crop factor = 5.41
Aperture = f3.3 - f4.5

35-mm equivalent aperture = (f3.3 - f4.5) × 5.41 = f17.9 - f24.3

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