ORF format

The ORF file format is a raw image format used in Olympus digital cameras. Like all other raw formats, this one contains image information rendered directly by a camera's sensor. ORF files feature so-called headers that present image characteristics, such as saturation, color temperature, contrast, etc. Headers also contain metadata, which includes camera's technical characteristics.

Olympus Raw Format (ORF)
Filename extension
.orf
Developed byOlympus
Type of formatraw image format

Overview

ORF files can be thought of as a format of "digital negatives." Just like film negatives, they are not usually intended to be directly viewed. Instead, ORF files contain all necessary information to create (or "develop") a usable image, in a more common format, with processing software.

Because ORF images come out without undergoing any processing, they present almost real color and shade characteristics, and they are more open for extensive editing than JPEG or TIFF images. ORF files have to be copied to a PC's hard disk, and then one can resort to an extensive array of adjustments. The format allows users to achieve maximum precision by setting their own white balance and saturation values, which is not feasible in JPEG or TIFF.

This approach is used by experienced professional and devoted amateur photographers. ORF files contain 12, 14 or more bits per pixel per channel, whereas JPEG images have only 8 bits per pixel per channel.

File name syntax

ORF files use the following syntax:

DigitSyntax
1stColorspace "_" for Adobe or "P" for RGB.
2ndMonth "1-9": Jan-Sep. "A-C": Oct-Dec.
3rd & 4thDay "01-31"
5th - 8thRunning auto numbering

Example: PC071138.ORF. This was taken RGB colorspace on December 7 with the number 1138 generated by the camera.

It has been confirmed on the Olympus E-410, Olympus E-420 and Olympus E-5.

gollark: *languages allowing correct, reliable programs are good
gollark: ```The loneliest is a.(Abs function)(returns the absolute value of 'a thought')Abs takes a thoughtIf a thought is greater than nothingGive back a thoughtElseGive back nothing without a thought(end Abs function)(Pow function)(returns 'all' raised to 'your base')Pow takes all and your baseIf your base is emptyGive back the loneliest (end if)If your base is less than nothingPut nothing without your base into your baseGive back the loneliest over Pow taking all, your base (end if)Put the loneliest into the onePut all into the magicWhile the one is smaller than your basePut all of the magic into the magicBuild the one up (end while)Give back the magic(end Pow function)(some constants for Sqrt function)The wing is strange.My song is knickknack. lumberjacksPut Pow taking my song, the wing into the dawnHalf is flummoxing. huzza(Sqrt function)(iterates until the estimate update is less than 'the dawn')Sqrt takes a mountainIf a mountain is nowhereGive back nothing (end if)Put a mountain into a molehillPut a molehill into the seaWhile Abs taking the sea is greater than the dawnPut a molehill into the seaPut Half of a molehill with Half of a mountain over a molehill into a molehillPut the sea without a molehill into the sea (end while)Give back a molehill(end Sqrt function)```A simple maths library.
gollark: https://github.com/dylanbeattie/rockstar
gollark: ```Midnight takes your heart and your soulWhile your heart is as high as your soulPut your heart without your soul into your heartGive back your heartDesire is a lovestruck ladykillerMy world is nothing Fire is iceHate is waterUntil my world is Desire,Build my world upIf Midnight taking my world, Fire is nothing and Midnight taking my world, Hate is nothingShout "FizzBuzz!"Take it to the topIf Midnight taking my world, Fire is nothingShout "Fizz!"Take it to the topIf Midnight taking my world, Hate is nothingSay "Buzz!"Take it to the topWhisper my world```A fizzbuzz program.
gollark: !>!

See also
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