AgfaPhoto Optima 102

Specifications

Optima 102 image
Brand: AgfaPhoto
Model: Optima 102
MegaPixels: 12.00
Sensor: 1/2.33" (~ 6.08 x 4.56 mm)
Price: Amazon, B&H Photo, Adorama

Sensor INFO

AgfaPhoto Optima 102 comes with a 1/2.33" (~ 6.08 x 4.56 mm) CCD sensor, which has a diagonal of 7.60 mm (0.3 inch) and a surface area of 27.72 mm².
Diagonal
7.60 mm
Surface area
27.7 mm²
Pixel pitch
1.52 µm
Pixel area
2.31 µm²
Pixel density
43.17 MP/cm²
If you want to know about the accuracy of these numbers, click here.
Actual sensor size:
This is the actual sensor size of AgfaPhoto Optima 102.
(Note: on some systems the presentation might not be 100% accurate. If in doubt, take a ruler and measure it. It should be 6.08 x 4.56 mm)
The sensor has a surface area of 27.7 mm². There are approx. 12,000,000 photosites (pixels) on this area. Pixel pitch, which is a measure of the distance between pixels, is 1.52 µm. Pixel pitch tells you the distance from the center of one pixel (photosite) to the center of the next.

Pixel or photosite area is 2.31 µm². The larger the photosite, the more light it can capture and the more information can be recorded.

Pixel density tells you how many million pixels fit or would fit in one square cm of the sensor. AgfaPhoto Optima 102 has a pixel density of 43.17 MP/cm².

These numbers are important in terms of assessing the overall quality of a digital camera. Generally, the bigger the sensor, pixel pitch and photosite area, and the smaller the pixel density, the better the camera. If you want to see how AgfaPhoto Optima 102 compares to other digital cameras, click here.

Specifications

Brand
AgfaPhoto (AgfaPhoto cameras)
Model
Optima 102
Megapixels
12.00
Sensor size
1/2.33" (~ 6.08 x 4.56 mm)
Sensor type
CCD
Sensor resolution
3995 x 3004 
Max. resolution
4000 x 3000
Min. resolution
640 x 480
Crop factor
5.69 
Optical zoom
Yes
Digital zoom
Yes
ISO
Auto, 100, 200, 400, 800, 1600, 3200, 6400
Auto focus
Yes
Manual focus
No
Normal focus range
80 cm
Macro focus range
5 cm
Focal length (35mm equiv.)
35 - 105 mm
Aperture priority
No
Aperture
f3 - f5.6
Aperture (35mm equiv.)
f17.1 - f31.9 
Metering
Centre weighted, Multi-segment, Spot
Exposure Compensation
-2EV - +2EV with 1/3EV steps
Shutter priority
No
Min. shutter speed
8 sec
Max. shutter speed
1/2000 sec
Flash modes
Anti red-eye, Auto, Fill in, Off
Built-in flash
Yes
External flash
No
Viewfinder
None
White balance presets
6
LCD display
Yes
LCD size
3"
LCD resolution
230,400
Selftimer
Yes
Storage types
SDHC, Secure Digital
USB
USB 2.0
Batteries
Li-Ion
Weight
105g
Dimensions
90x56.8x18.8 mm
Year
2009


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Diagonal

The diagonal of AgfaPhoto Optima 102 image sensor is not 1/2.33 inch as you might expect, but approximately two thirds of that value - 0.3 inch. If you want to know why, see sensor sizes.

Diagonal is calculated by the use of Pythagorean theorem:
Diagonal =  w² + h²
where w = sensor width and h = sensor height


AgfaPhoto Optima 102 diagonal

w = 6.08 mm
h = 4.56 mm
Diagonal =  6.08² + 4.56²   = 7.60 mm


Surface area

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

Width = 6.08 mm
Height = 4.56 mm

Surface area = 6.08 × 4.56 = 27.72 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

AgfaPhoto Optima 102 pixel pitch

Sensor width = 6.08 mm
Sensor resolution width = 3995 pixels
Pixel pitch =   6.08  × 1000  = 1.52 µm
3995


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

AgfaPhoto Optima 102 pixel area

Pixel pitch = 1.52 µm

Pixel area = 1.52² = 2.31 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

You could also use this formula:
Pixel density =   effective megapixels × 1000000  / 10000
sensor surface area in mm²

AgfaPhoto Optima 102 pixel density

Sensor resolution width = 3995 pixels
Sensor width = 0.608 cm

Pixel density = (3995 / 0.608)² / 1000000 = 43.17 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:
(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

AgfaPhoto Optima 102 sensor resolution

Sensor width = 6.08 mm
Sensor height = 4.56 mm
Effective megapixels = 12.00
r = 6.08/4.56 = 1.33
X =  12.00 × 1000000  = 3004
1.33
Resolution horizontal: X × r = 3004 × 1.33 = 3995
Resolution vertical: X = 3004

Sensor resolution = 3995 x 3004


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


AgfaPhoto Optima 102 crop factor

Sensor diagonal in mm = 7.60 mm
Crop factor =   43.27  = 5.69
7.60

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).

AgfaPhoto Optima 102 equivalent aperture

Crop factor = 5.69
Aperture = f3 - f5.6

35-mm equivalent aperture = (f3 - f5.6) × 5.69 = f17.1 - f31.9
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