Each digital camera has a set of microprocessors which control camera’s sensor, buffer, LCD, autofocus, etc. These microprocessors are also controlled by “firmware”, which is software stored in the Read Only Memory (ROM) of the camera. In order to enhance performance and/or add new features, most of the cameras allow the firmware to be upgraded. [...]
Archive for the ‘Camera System’ Category
Fill Factor
October 9th, 2010 
Andrei Fill factor, in the context of solar cell technology, is defined as the ratio (given as percent) of the actual maximum obtainable power, (Vmp x Jmp) to the theoretical (not actually obtainable) power. In the context of photography and cameras, the fill factor indicates the size of the light sensitive photodiode relative to the surface [...]
EXIF
October 5th, 2010 Andrei A digital camera doesn’t store only information about the pixels of the image, it also stores information about the date and time a picture was taken, aperture, shutterspeed, ISO and many other camera settings. All these information, also called “metadata” are stored in a header. One of the most used type of header is EXIF [...]
Effective Pixels
October 1st, 2010 Andrei As we look at a digital image, we must understand that the number of pixels is not the same thing with the number of sensor pixels measurements that were used to produce that image. In conventional sensors, each pixel has one photodiode which corresponds with one pixel in the image. A conventional sensor in, for [...]
Conectivity
September 28th, 2010 Andrei We talk about connectivity, at a digital camera, when we want to refer at the way that other devices can be connected, so that transfer, viewing or printing of images can take place. We also need connectivity to use the camera for remote capture. Image transfer To be able to transfer images to your computer, [...]
Posted in Camera System 
Tags: camera, conectivity, FireWire, image transfer, PictBridge, print output, remote capture, USB, video output 
12 Comments »Color Filter Array
September 11th, 2010 Andrei A color filter array (CFA), or color filter mosaic (CFM), is a mosaic of tiny color filters placed over the pixel sensors of an image sensor to capture color information. Color filters are needed because the typical photosensors detect light intensity with little or no wavelength specificity, and therefore cannot separate color information. The color [...]
Burst (Continuous)
September 7th, 2010 Andrei This mode represents the digital camera’s ability to take several shots immediately one after another, similar to a film SLR camera with a motorwind. The number of frames per second and total number of frames differs greatly between camera types and models. The fps is a function of the shutter release and image processing systems [...]
Buffer
September 3rd, 2010 Andrei After the sensor in the camera is exposed, the image data will be processed and then written to the storage card. The buffer inside a digital camera consists of RAM memory which holds the image information before it is written out to storage card. This process makes the time between shots shorter and allows burst [...]
Batteries
August 30th, 2010 Andrei Disposable AAs Given the high power consumption of digital cameras, it is economically and environmentally unjustified to use disposable batteries other than in emergency situations when your rechargeables are depleted. Disposable Lithium AAs are more expensive than Alkalines, but having about three times the power packed in half the weight, they are ideal to carry [...]
Autofocus
February 15th, 2010 Andrei This feature can be found in all digital cameras. In autofocus (AF) mode the camera will automatically focus on the subject in the focus area in the center of the LCD or viewfinder. Many digital cameras allows the user to also select other autofocus regions that will be indicated on the LCD/viewfinder. In “single AF” [...]
