Sensor size is generally a good indicator of the quality of the camera.
Canon PowerShot D20 Key Features:
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.
Difference: 0. Pixel pitch. 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.
Actual sensor size
Pixel pitch of D20 is approx. Pixel area. Pixel or photosite area affects how much light per pixel can be gathered.
Panasonic Lumix DMC-FT4
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: 0. A pixel on Canon D20 sensor is approx.
Pixel density. 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.
Panasonic FT4 has approx.
Panasonic Lumix DMC-TS4 (DMC-FT4) Key Features:
To learn about the accuracy of these numbers, click here. Effective megapixels. Normal focus range. Focal length 35mm equiv. Exposure compensation.
White balance presets. Choose cameras to compare vs.
Popular comparisons:. If you want to know why, see sensor sizes.
Canon PowerShot D20 Camera User Manual, Instruction Manual, User Guide (PDF)
Surface area Surface area is calculated by multiplying the width and the height of a sensor. 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. 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. Crop factor Crop factor or focal length multiplier is calculated by dividing the diagonal of 35 mm film Fujifilm FinePix XP Actual size is currently adjusted to screen.