CCD• The image sensor or Charged Coupling Device (CCD) is the part of the camera or camcorder that receives the image data from the lens.• The CCD is a grid of light –sensitive cells called photo site, representing pixels, that collect values for RGB (or YUV).• The size and patterns of the cells on the surface of the sensor determine the true resolution of the camera.
Complementary Metal-Oxide Semiconductor (CMOS)• It starts with a one-third sensor, which means the surface area of the sensor is small- based on one third the size of the imaging area on a standard 35mm film camera.• The progressive scans of this sensor are interpolated to produce the correct number of pixels, but the data in those pixels is primarily from the luminance, or green channel.
Complementary Metal-Oxide Semiconductor (CMOS)• This gives the greyscale part of the image a lot of clarity and sharpness, but the colour saturation from the red and blue channels suffers greatly.• The interpolation compensates by averaging the data and creates a simulated HD image that looks pretty good with live footage but wreaks havoc on a green screen shot.
Codex-Onboard Recorder• The Codex Onboard Recorder is the start of your file based workflow. It can record anything, from HD for television to the highest quality digital cinematography cameras.• The Codex Onboard can record uncompressed or wavelet cinema quality HD material – plus audio and metadata – onto a single, removable data pack. When shooting is done, it offloads material much faster than real-time – typically three to five times faster.
Onboard Recorder-Data Pack• Designed for use with the Codex Onboard Recorder, this Datapack uses solid state memory to provide highly robust performance at the bandwidth required to record uncompressed data from the highest resolution digital cinema cameras. Up to 40m record time, uncompressed Up to 256GB capacity Solid state memory for consistent performance and maximum security of data
Transfer Unit• The Codex Transfer Station for Mac OS X is the hub of your file-based workflow. It can be easily configured to automatically provide a full set of deliverables – everything you need for your production and post, from viewing copies to archives. And it can produce them all in less time than traditional systems take to make a single copy.
• Canons 1Ds/5D and Nikon D3 series are the most common full frame sensors. Canon cameras such as the Rebel/60D/7D all have a 1.6X crop factor, whereas mainstream Nikon SLR cameras have a 1.5X crop factor. The above chart excludes the 1.3X crop factor, which is used in Canons 1D series cameras.
• Camera phones and other compact cameras use sensor sizes in the range of ~1/4" to 2/3". Olympus, Fuji and Kodak all teamed up to create a standard 4/3 system, which has a 2X crop factor compared to 35 mm film.• Medium format and larger sensors exist, however these are far less common and currently prohibitively expensive.
• The crop factor is the sensors diagonal size compared to a full-frame 35 mm sensor. It is called this because when using a 35 mm lens, such a sensor effectively crops out this much of the image at its exterior (due to its limited size).
• One might initially think that throwing away image information is never ideal, however it does have its advantages. Nearly all lenses are sharpest at their centers, while quality degrades progressively toward to the edges. This means that a cropped sensor effectively discards the lowest quality portions of the image, which is quite useful when using low quality lenses (as these typically have the worst edge quality).
• Additionally, the optical performance of wide angle lenses is rarely as good as longer focal lengths. Since a cropped sensor is forced to use a wider angle lens to produce the same angle of view as a larger sensor, this can degrade quality. Smaller sensors also enlarge the center region of the lens more, so its resolution limit is likely to be more apparent for lower quality lenses. See the tutorial on camera lens quality for more on this.
• Similarly, the focal length multiplier relates the focal length of a lens used on a smaller format to a 35 mm lens producing an equivalent angle of view, and is equal to the crop factor. This means that a 50 mm lens used on a sensor with a 1.6X crop factor would produce the same field of view as a 1.6 x 50 = 80 mm lens on a 35 mm full frame sensor.