RAW data
RAW data (which Nikon call NEF data) is the output from each of the original red, green and blue sensitive pixels of the image sensor, ...
Raw Data - Uncompressed data that comes from the CCD.
Read-out Register - Each row of photosites on an image sensor sends out signals. This mechanism reads these signals and sends them to the camera's analog-digital converter.
Raw data
Data that is not formatted or processed.
RAW Image Format ...
RAW data takes longer to write to memory card and there is a need to post-process every single picture.
The raw data is called "raw" since it is totally unprocessed. At this point, white balance and other adjustments have not been made and the data is still an exact recording of what each photosite recorded. One photosite makes one pixel.
- Captures RAW data
- Photo Pro software outputs in sRGB, Apple RGB, Adobe RGB,ColorMatch RGB
Lens mount
Sigma SA mount ...
Previews of RAW data displayed in PhotoAcute Studio are calculated with default parameters. Have no worries about improper white balance or absence of control over image parameters: this is a RAW-in - RAW-out type of processing.
- JPEG/TIFF development Mode, Now it is possible to convert JPEG and TIFF which is similar to a RAW data. Many functions like white balance , rimming and false color control functions to make adjustments to JPEG and TIFF files are possible.
ETTR presents a few problems, one being that the LCD camera preview, including the histogram and clipping indicators, isn't based on the linear RAW data.
Image Processing: Think of "data processing": it refers to the manipulation of raw data to solve some problem or enlighten the user in some way not possible without the manipulation. So it is with image processing.
Instead of being processed in the camera, where computing power and work space is limited (imagine Scarlett O'Hara trying to change into a Civil War era ball gown in a small closet), the raw data is processed into a final image on a powerful desktop ...
There are some instances where a camera manufacturer may compress the RAW data, but in most cases will use lossless compression. This means that although the data is compressed, when decompressed there is no file degradation due to the compression.
The power of SilkyPix lies in the high quality interpolation algorithm of the RAW data and user-selectable precision control (Demosaic Sharpness slider). A 100% setting will force extraction of the full resolution of data that seems possible.
Firmware in the camera, or a software in a raw converter program such as Adobe Camera Raw, interprets the raw data from the sensor to obtain a full color image, ...
It is sometimes said that raw data is the data straight from the pixels with no processing at all performed. This is incorrect. The data straight from the pixels is unamplified, analog, voltage data. Raw converters can not even read this data.
and in camera noise reduction can be switched off, so can sharpness, a JPEG is just the RAW data dumped from the camera and processed in the hardware.
Well that's the low and simplest end of processing RAW data.
** One tip I'll throw in here.
Some people call a RAW file a digital negative, but that's not quite true. RAW files are composed of raw data.
An algorithm that converts raw data to an encoded form, usually to physically compress the data.
entropy encoder
See lossless encoding.
Post Processing
Developing of the image, from Raw data or in camera converted file formats.. depending on the software used, many elements can be adjusted at this stage including, exposure, brightness, colour, saturation etc.
A digital image storage format that contains the most information possible from a camera's sensor. RAW data ( a RAW image file) is unprocessed. Some folks consider it to be the digital equivalent of a negative or a slide.
Talking now about digital cameras - our main topic: After we make a change on the image from digital camera we should save it with the same Quality settings as it was produced from the raw data inside the camera.
Now I got you! ...
The object of ETTR is to expose the image so that the raw data fully populates the right-hand side of the histogram without clipping highlights to pure white.
You select a final resting place for the histogram window, capture the underlying RAW data, and then your image is ready for use. This is a serious oversimplification of the process, but, I hope, makes it more understandable.
And unlike the way film or our eyes see light these raw brightness values are linear values, in simplest terms just a tally of the number of photons that each photosite collected. If you could print this raw data you’ ...
The processing system inside the camera that turns the raw data into a color balanced and pleasing photograph is the most critical, which is why some four plus mega pixel cameras perform better than higher end cameras.
Some cameras offer an option to let the camera store the raw data uncompressed. A serial interface for connection to a computer makes the image-files available for reworking them with imaging software.
 See also: Data, Raw, Camera, Image, Digital
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