Kodak EasyShare C195 vs. Kodak EasyShare C1550

vs. 


Kodak EasyShare C195  Kodak EasyShare C1550  
Megapixels

14.50  16.60  
Max. resolution

4288 x 3216  4608 x 3440  
Price

Amazon, B&H Photo, Adorama  Amazon, B&H Photo, Adorama  
Sensor 

Sensor type

CCD  CCD  
Sensor size

1/2.3" (~ 6.16 x 4.62 mm)  1/2.3" (~ 6.16 x 4.62 mm)  
Sensor resolution

4392 x 3302  4699 x 3533  
Diagonal

7.70 mm  7.70 mm  
Surface area

28.46 mm²  28.46 mm²  
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 sizes:
Surface area:
Kodak EasyShare C195 and Kodak EasyShare C1550 have the same surface area.


Pixel pitch

1.4 µm  1.31 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. 
Pixel pitch
Pixel pitch of Kodak EasyShare C195 is approx. 7% higher than pixel pitch of Kodak EasyShare C1550.


Pixel area

1.96 µm²  1.72 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:
A pixel on Kodak EasyShare C195 sensor is approx. 14% bigger than a pixel on Kodak EasyShare C1550.


Pixel density

50.84 MP/cm²  58.19 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. 
Pixel density
Kodak EasyShare C1550 has approx. 14% higher pixel density than Kodak EasyShare C195.

To learn about the accuracy of these numbers,
click here.
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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 
Kodak EasyShare C195 diagonal
The diagonal of Kodak EasyShare C195 image
sensor is not 1/2.3 inch as you might expect, but approximately two thirds of
that value. If you want to know why, see
sensor sizes.
w = 6.16 mm
h = 4.62 mm
w = 6.16 mm
h = 4.62 mm
Diagonal = √  6.16² + 4.62²  = 7.70 mm 
Kodak EasyShare C1550 diagonal
The diagonal of Kodak EasyShare C1550 image
sensor is not 1/2.3 inch as you might expect, but approximately two thirds of
that value. If you want to know why, see
sensor sizes.
w = 6.16 mm
h = 4.62 mm
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.
Kodak EasyShare C195 surface area
Width = 6.16 mm
Height = 4.62 mm
Surface area = 6.16 × 4.62 = 28.46 mm²
Height = 4.62 mm
Surface area = 6.16 × 4.62 = 28.46 mm²
Kodak EasyShare C1550 surface area
Width = 6.16 mm
Height = 4.62 mm
Surface area = 6.16 × 4.62 = 28.46 mm²
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 
Kodak EasyShare C195 pixel pitch
Sensor width = 6.16 mm
Sensor resolution width = 4392 pixels
Sensor resolution width = 4392 pixels
Pixel pitch =  6.16  × 1000  = 1.4 µm 
4392 
Kodak EasyShare C1550 pixel pitch
Sensor width = 6.16 mm
Sensor resolution width = 4699 pixels
Sensor resolution width = 4699 pixels
Pixel pitch =  6.16  × 1000  = 1.31 µm 
4699 
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 
Kodak EasyShare C195 pixel area
Pixel pitch = 1.4 µm
Pixel area = 1.4² = 1.96 µm²
Pixel area = 1.4² = 1.96 µm²
Kodak EasyShare C1550 pixel area
Pixel pitch = 1.31 µm
Pixel area = 1.31² = 1.72 µm²
Pixel area = 1.31² = 1.72 µm²
Pixel density
Pixel density can be calculated with the following formula:
You could also use this formula:
Pixel density = (  sensor resolution width in pixels  )² / 1000000 
sensor width in cm 
You could also use this formula:
Pixel density =  effective megapixels × 1000000  / 10000 
sensor surface area in mm² 
Kodak EasyShare C195 pixel density
Sensor resolution width = 4392 pixels
Sensor width = 0.616 cm
Pixel density = (4392 / 0.616)² / 1000000 = 50.84 MP/cm²
Sensor width = 0.616 cm
Pixel density = (4392 / 0.616)² / 1000000 = 50.84 MP/cm²
Kodak EasyShare C1550 pixel density
Sensor resolution width = 4699 pixels
Sensor width = 0.616 cm
Pixel density = (4699 / 0.616)² / 1000000 = 58.19 MP/cm²
Sensor width = 0.616 cm
Pixel density = (4699 / 0.616)² / 1000000 = 58.19 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. 22.8 × 15.5 sensor for example has a ratio of 1.47.
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. 22.8 × 15.5 sensor for example has a ratio of 1.47.
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
Kodak EasyShare C195 sensor resolution
Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 14.50
Resolution horizontal: X × r = 3302 × 1.33 = 4392
Resolution vertical: X = 3302
Sensor resolution = 4392 x 3302
Sensor height = 4.62 mm
Effective megapixels = 14.50
r = 6.16/4.62 = 1.33 

Resolution vertical: X = 3302
Sensor resolution = 4392 x 3302
Kodak EasyShare C1550 sensor resolution
Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 16.60
Resolution horizontal: X × r = 3533 × 1.33 = 4699
Resolution vertical: X = 3533
Sensor resolution = 4699 x 3533
Sensor height = 4.62 mm
Effective megapixels = 16.60
r = 6.16/4.62 = 1.33 

Resolution vertical: X = 3533
Sensor resolution = 4699 x 3533
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 
Kodak EasyShare C195 crop factor
Sensor diagonal in mm = 7.70 mm
Crop factor =  43.27  = 5.62 
7.70 
Kodak EasyShare C1550 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).
Kodak EasyShare C195 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
Kodak EasyShare C195, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Kodak EasyShare C195 is 5.62
Crop factor for Kodak EasyShare C195 is 5.62
Kodak EasyShare C1550 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
Kodak EasyShare C1550, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Kodak EasyShare C1550 is 5.62
Crop factor for Kodak EasyShare C1550 is 5.62
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