Raw. Workflow CALUMET PHOTOGRAPHIC

Transcription

1 Raw Workflow CALUMET PHOTOGRAPHIC

2 What is Workflow? Workflow is simply the steps taken between shooting pictures and creating final output images. It is uniquely YOU! This can be as simple as downloading JPEG files from your digital camera, printing, and storing or it can incorporate Raw file conversion, image optimization, organization, printing contact sheets and individual prints, and production of several output file sizes and formats. Emphasis on repeatability. 2

3 Workflow is the entire Process: Import Metadata Backup Edit Develop Finish Share 3

4 Why Shoot Raw? Quality of an original Versatility of a negative! 4

5 What makes a file Raw?. Undeveloped 2. High Bit depth 3. Linear response 5

6 Why Raw?. Massive increase in pixel data. 8 bits (JPEG) values 2. 2 bits (RAW) 4,96 values Many dslrs offer this 3. 4 bits (RAW) 6,384 values some dslrs offer 4. 6 bits (RAW) - 65,536 values Medium Format Backs & Leica 5. Finer gradation of tone 6. More accurate color 6

7 Why Raw continued? 2. Much more latitude in exposure and room for correction 3. Ability to implement Workflow Tools 7

8 Why Raw Now? Workflow, Workflow, Workflow With the right tools, RAW is easier than JPEG Technologies have evolved Software tools, Camera speed, Memory capacity and inexpensive storage drives 8

9 The Old Way Copy files off card View/edit in...? Photoshop?... Open in Photoshop Process, save PSD file Save a JPEG copy... where?...save a small copy... where?... Black and white version?... Save a Master TIFF where? Copy Crop? Copy And so on.lots of steps and manual set ups 9

10 The New Way Import and apply metadata Integrated backup Mark (star) good images Develop marked images Make any number of variations(crops, BW, etc.) Maybe finish some in PS Export what is needed directly Discard exports, no copies

11 Digital photography background

12 Single shot digital cameras Chip is patterned with Red, Green and Blue Pixels 2

13 Development Each Photo Site borrows information from surrounding sites 3

14 4 Development Each Photo Site borrows information from surrounding sites

15 5 Development Each Photo Site borrows information from surrounding sites

16 Developed Image An image has now been developed. The three channels when combined make up the RGB image. As a result, the single shot file is roughly 3X the number of megapixels. For example, a 6 megapixel chip yields an 8mg file. 6

17 Where? - In Camera - In the computer using a Raw file converting application. 7

18 What makes a file Raw?. Undeveloped 8

19 What they look like... 9

20 Raw File Designations.3fr,.ari,.arw,.bay,.cr2,.crw,.cap,.dcs,.dcr, dng,.drf,.eip,.erf,.fff,.iiq,.k25,.kdc,.mef,.mos,.mrw,.nef,.nrw,.obm, orf,.pef,.ptx,.pxn,.r3d,.raf,.raw,.rwl,.rw2,.rwz,.sr2,.srf,.srw,.x3f 2

21 What makes a file RAW?. Undeveloped 2. High Bit Depth 2

22 Bit Depth 2 bits per channel = 496 shades of gray For high quality work, Bigger adjustments need to be made at Higher bit depths. 22

23 When we manipulate data, we compress & stretch adjacent tones Too far and we get gaps. 23

24 Posterized! 24

25 High Bit Depth Exposure Color Balance 25

26 Exposure Any of the controls...exposure, Contrast, Brightness may alter exposure. 26

27 Non Destructive Great term! Edits to an image are saved as an edit list. Can be done, undone & redone as many times as needed. 27

28 Color Balance Color balance = Gray Balance = Neutral Balance 28

29 Is it Gray? Color Balance is equal RGB values on something that is supposed to print without hue! R=245 G=245 B=245 R=5 G=5 B=5 R=35 G=35 B=35 29

30 Color Balance 3

31 Color Balance and Emotion 3

32 What makes a file Raw?. Undeveloped 2. High Bit depth 3. Linear Response 32

33 Linear Response The human eye and film are non-linear. The recording response of a digital sensor is proportional to the number of photons that hit it. The response is linear. Unlike film digital sensors record twice the signal when twice the number of photons hit it. The linear raw data will usually look very dark and low in contrast compared to a normal photograph. Raw linear data allows much better complete control to an image. 33

34 Linear File Converted in Software Un Unprocessed Software Conversion 34

35 REVIEW Three common elements in Raw. Undeveloped 2. High Bit depth 3. Linear response 35

36 Benefits / Drawbacks to Raw Benefits Wide Latitude Easy to repurpose Applications get better Non-Destructive Edits Improved image quality More dynamic range More flexible white balance Drawbacks FIles are larger than jpeg s (Good thing storage is cheap!) Additional step required in some situations Not as universal as jpeg s. Need for up to date software 36

37 Applications that support Raw Camera manufacturer s Nikon (NX2), Canon (DPP), Fujifilm, and Sony all make applications suitable to their own file formats. Using the camera manufacturer s Raw software will allow access to all that the file can offer (SDK). Adobe Camera Raw / Photoshop/ Elements/ Lightroom 5 Capture One Aperture Mac Only Corel Aftershot Pro formerly Bibble Pro DxO Optics Pro ACDSee Pro 5 37

38 Free Raw Program IrfanView 38

39 FREE Raw Program Open Source 39

40 Unique features Among Raw programs Aperture Browser has great editing features Lightroom The leader preferred by many pros concerned with total image handling Photoshop Can implement other Photoshop functions, DNG Standard Phase One Capture One Pro Batch processing, quality. Selective color adjustment Nikon NX mm Dust tool Nik U Point Technology Dx Optics & Geometric Correction Corel Aftershot Pro Speed Noise Ninja included 4

41 All Raw applications have elements in common 4

42 Common in Raw apps Browser Layout Metadata 42

43 Common Tools in RAW applications Adjust Exposure, Color Balance Scaling Save in Common formats Sharpening Renaming Cropping Color Management Some form of Batch Processing 43

44 Raw Convertor Features User Interface Support for Color Management (Monitor profile, Camera profiles, Output profiles) Histogram or aid for EV correction Large Preview Realtime WB,EV and other correction previews Batch Capabilities 44

45 Raw Convertor Features - 2 Good Workflow integration Integration with Raw Image Browser (Lightroom,etc.) Saving & Recalling settings (like WB, Sharpening) 6 Bit file save Tag saved files with profiles 45

46 More on Conversion JPEGS can be saved as TIFFS to avoid losing data. This will allow better editing on a JPEG so no artifacts are introduced. (Lossless) I usually convert to 6 bit TIFF unless creating web files Color Space can be assigned srgb for web use make sure your browser is capable of Color Management Multiple file editing saves time Feel free to take files into an external editor (PS) 46

47 You may have multiple needs process accordingly All digital images need sharpening. Always Sharpen last Never add Sharpening to your Master image 47

48 One last thing... New cameras Be aware of supported gear - ACR Version 48

49 ADOBE DNG FREE from Adobelabs.com DNG format helps promote archival confidence, since digital imaging software solutions will be able to open raw files more easily in the future. A single raw processing solution enables a more efficient workflow when handling raw files from multiple camera models and manufacturers. A publicly documented and readily available specification can be easily adopted by camera manufacturers and updated to accommodate technology changes. 49

50 IMPLEMENTATION Steps Involved 5

51 Steps Involved Outline. Shooting or Capture Workflow 2. Color Management 3. Digital Processing 5

52 Before we discuss Raw Workflow. Make sure the time is set correctly in the camera 2. Batteries should be fully charged 3. Memory Cards format in Camera only 4. Transfer images via a card reader 52

53 Shooting or Input Start Off Right Set Camera to Raw Use Histogram Set a White Balance not AWB Turn on Highlight Warning Expose to the Right 53

54 Highlight Warning in Your Camera Setup to Show Overexposure. Overexposed areas will Blink. 54

55 Establish a Neutral Reference at Capture Great tool is XRites s Color Passport or a Digital Grey Card or a Black, Grey & White Card. Insert in scene & Expose Remove and Capture Final Image(s) Process Raw file in software and use Reference Area for Neutral 55

56 Histograms The tendency when you begin to photograph digitally is to underexpose to preserve highlights. You should avoid this under normal conditions. Over exposure or metering as your camera suggests on your subject will serve you much better. This is counter intuitive and it will take some time to get comfortable with. Raw allows you the most control. It is important to understand the entire digital workflow while you are out shooting to obtain the best digital exposure. Remember Linear. 56

57 Histograms

58 Correct Exposure 58

59 Under Exposure 59

60 Over Exposure 6

61 Contrast Too High This image has both clipped shadows and highlights. The dynamic range of the scene is larger than the dynamic range of the camera. 6

62 Low Contrast The image only contains midtones and lacks contrast, resulting in a hazy image. 62

63 Modified Contrast When "stretching" the above histogram via a Levels or Curves adjustment, the contrast of the image improves, but since the tones are redistributed over a wider tonal range, some tones are missing, as indicated in this "combed" histogram. Too much combing can lead to posterization. 63

64 REMEMBER that you can recover highlights in Adobe Camera Raw (or with Apple s Aperture, DXO, Adobe Lightroom or Capture One, etc.) Up to 2 stops! REMEMBER that you can control the brightness and bring it back to the way the image should look! 64

65 Since you are capturing in Raw and using 2 to 6 bits of information you have plenty of room to manipulate the image if you need to as long as you don t blow out the highlights too much. With Jpeg s the camera is converting them, adding sharpening and also dropping it down to an 8-bit file which has only 256 tonal values. That may sound ok, but if you have to do serious levels work in an Editing Program on that Jpeg (for example, wrong exposure) you will be seriously damaging the file. That is why Raw is so much better for critical image capture. 65

66 Michael Clark s workflow in the field goes like this: Set custom white balance > Take a photo of the subject > Preview the image and histogram at this point I am not looking at the image just the histogram > from the histogram I see if I need to adjust my exposure (shutter speed and aperture). If the histogram is mashed up on the left then I open up and overexpose to push the histogram to the right; conversely if I have seriously blown the highlights out I stop down and take another shot to make sure I have the optimum exposure. > Once I get the exposure dialed in I then start shooting in earnest. 66

67 Histograms will be of a different nature under certain conditions. Do not panic or over react. Examples black cat in coal bin white plate on white background High Key or Low Contrast In other words, Subjects not consisting of a mix of Shadows, Midtones & Highlights 67

68 Color Management A program in itself! Raw has no color space; it is assigned during processing Need for a professional, Smart Monitor to edit files that are accurate for all purposes Need to work in a neutral environment Hardware and Software is needed for accurate profiling All devices differ in their interpretation of color 68

69 Standard Settings for Photography: 65K White Point, 2.2 Gamma and 2 Luminance If producing your own prints you may want to match the paper white with the Monitor white Color Spaces assigned in Editing Program for Output srgb web and basic prints. Wedding/Portrait argb Fine Art Preferred as well as ProPhotoRGB (very big) 69

70 Digital Processing Consists of: Raw Processing Cataloging Backing Up Output 7

71 Set Up Folders for Images Needs vary; so customize Remember Same Way All of the Time! Hierarchy: Images Folder on Hard drive Create a Job Folder. In the Job Folder establish subfolders. I use MASTER, JPEG, TIFF, ORG ORG = Originals MASTER = Edited files w/edit layers TIFF = Print or Output JPEG = Web or Print 7

72 I use Folder = Subject_YYMMDD (Capture Date) Subfolders = JPEG MASTER ORG TIFF You may have more or less depending on needs Copy and change info as you get assignments 72

73 My first step after capture is to name the folder and subfolders accordingly and copy Raws to the ORG folder. Then immediately create a backup either on an external hard drive, DVD or Remote (Carbonite) Verify the integrity of the Backup REMEMBER 4GBs of Images is equal to DVD 73

74 First Look Use your preferred image browser and go through the Raw images and delete any that are not fit for Primetime such as out of focus, poor composition, etc. Lightroom makes it easy to reject I use Lightroom as it is fairly versatile and chock full of features for the working Pro ie; Metadata, keywords, editing, renumbering Metadata you can create a Metadata Template Keywords add relevant keywords for easy searching 74

75 Rename Guide Batch Rename. Name files with only the letters of the alphabet and the numerals through 9 Avoid punctuation marks (other than hyphen and underscore), accented vowels and other special characters Keep the full name to 3 characters or less for files on network or removable media Very easy in Lightroom 75

76 More Image Data Rate Images based on star scale Add additional labels to files Refine Keywords Create & Organize groups of images into a defined Collection Lightroom will allow Stacking a group of images for quick navigation 76

77 Overview of a Digital Processing Workflow Raw INGESTION (Demosaicing) NOISE REDUCTION APPLY TONE CURVE APPLY CAMERA PROFILE EXPOSURE WHITE BALANCE CONTRAST,BRIGHTNESS,SATURATION CORRECT COLORS (Global;Selective) RETOUCH RESIZE SHARPEN 77

78 A Lightroom Workflow CAPTURE Raw or JPEG? Expose Correctly IMPORT Store Photos in organized Folders Consider renaming & converting Raw to DNG Apply Basic Metadata copyright & general keywords Apply any Develop presets Render Previews saves time 78

79 A Lightroom Workflow - 2 ORGANIZE Browse Photos Manage photos in Folders Group Photos into Stacks & Collections Add Star ratings & labels to identify Favorites Add additional metadata; ie keywords Search for photos using filters & smart collections Back up catalog & photos 79

80 A Lightroom Workflow - 3 DEVELOP / RETOUCH Adjust tone and color Remove dust, noise, sharpen, apply lens corrections Straighten and Crop Apply Effects Switch to Photoshop or other external editors for pixel based editing Create panoramics and HDRs in external editors 8

81 A Lightroom Workflow - 4 OUTPUT Create finished files in size, format & your choice of Color Space Export plug-ins to enhance such as borders Slide Shows export to videos, PDF & Jpegs New Books Create Web Gallery Use Publish to synch with Flickr & photo sharing websites 8

82 Backup / Archive Backup: Backups have two distinct purposes. Their primary purpose is to recover data as a reaction to data loss, be it by data deletion or corrupted data. The secondary purpose of backups is to recover data from a historical period of time within the constraints of a user-defined data retention policy, typically configured within a backup application for however long copies of the data are required. Archive: Storage of a collection of digital data comprise an archive. Archive data is data that does not change much or at all and must be kept long periods of time. May want outside service. 82

83 Be disciplined Implement a Backup procedure and always use it It only takes one hiccup to ruin your day UPDIG recommends a 3-2- strategy: 3 copies of each file 2 types of media stored remotely 83

84 DAM The term "digital asset management" (DAM) refers to the protocol for downloading, renaming, backing up, rating, grouping, archiving, optimizing, maintaining, thinning, and exporting files. It covers a lot of ground. DAM software helps you sort, track, back up, convert, and archive your photographs. Its function is to store, view, control, and manipulate all the information you have collected about your photos, as well as the photos themselves. 84

85 Parametric Image Editor (PIE) Parametric image editing is a class of non-destructive image editing in which the editing software does not alter original files, but instead records changes to images as sets of instructions or parameters. Software that adjusts images in this way like Lightroom, Adobe Camera Raw (ACR), Aperture, Bibble, and Capture One is particularly well suited to the challenges of digital photography, as we ll see. And because you can save your work as a set of instructions, it s the adjustment method that best suits a DAM environment. 85

86 It starts with the raw ingredients Raw files from each camera model are unique. So a NEF or a CR2 that one camera model creates will have a different structure from a NEF or CR2 that a different model creates. Furthermore, proprietary raw files are undocumented, which means that the manufacturer does not disclose the way the data is stacked up in the file. 86

87 Because altering an undocumented file format is dangerous, third party applications for adjusting raw images (that is, applications from companies other than the camera manufacturer) generally don t alter the raw file. In order to make changes to the image, they reinterpret the image, save the user s changes as rendering instructions, then send the image through a rendering engine that decodes the raw data and makes the user s changes. 87

88 When you adjust proprietary raw files with PIEware, the instructions are typically saved in a sidecar file that lives in the same folder and has the same rootname as the file. 88

89 Rendering engines are unique Advantages of parametric image editing * Non-destructive workflow * Paste settings easily * Save and compare multiple interpretations * Take advantage of software upgrades 89

90 The DAM Book Digital Asset Management for Photographers by Peter Krogh 9

91 Q&A

92 Frank Shelley November 2, 23 HAVE FUN! START USING Raw!!