A couple of questions we often get on DCM are -
Can I scan and share a book that is already on DCM?
If want to please, feel free. Especially if your copy is in better condition or the existing scan is incomplete. We have many books with more than one version. We just mark it as (diff ver) in the title. There are a ton of scans on DCM that could use a better version done. All fiche, all incomplete or super small scans, and many just plain bad scans could be improved on. So never worry about duplicate books. If you want to scan something do it. Many just look to fill the missing holes and that's fine too.
"Can I just scan the missing pages and add them to an incomplete scan on DCM?"
Absolutely. Just make sure whatever missing pages you add are named so they are in the proper order and to give the original scanner full credit for their work in the description area.
-Yoc
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This information is from the Z-Cult, but I thought I would post it up for all here since we get a lot of questions about this subject.
Here's part 1:
Scanning Materials
For the purpose of this tutorial, you will need:
• A PC or a Laptop
• A Color Comic (Trade Paperbacks, B&W comics, and Graphic Novels will be addressed separately)
• A heavy book (for weight purposes, but careful as to its weight, as you do not want to break your scanner)
• A towel or a cloth (to cover the scanner as you scan, but this is an individual choice)
• A black piece of stock paper or something similiar
• A scanner capable of at least 300 DPI scanning, TWAIN drivers, and DESCREEN option (refer to manufacturer’s manual if you are not certain your scanner has these options)
• Adobe Photoshop CS
NOTE: The software used varies from person to person, but we will only use Photoshop for the purpose of this tutorial
Pre-Scanning Preparation
1. First thing you need to do, if verify the scanner’s plate glass surface is free of smears, smudges, marks, spots and streaks. If the surface needs to be cleaned, then please refer to the manufacturer’s guide for proper cleaning instructions, as some scanners require specific materials to clean and maintain the glass surface. For the most part, a warm, damp cloth is the simplest and best cleaning solution. Wipe the glass gently and thoroughly, then wipe it dry with a separate cloth. Leave the scanner’s lid open for at least 5 minutes, to let whatever dampness and moisture evaporate, before placing the comic book onto the scanner’s surface. If the surface is still moist when placing the comic book, it may damage the pages of the book itself.
2. Open Adobe Photoshop CS
3. From the FILE menu, select ACQUIRE, and the scanning application will appear.
4. Place the comic book onto the scanner’s surface. Place the book at the base, to allow the scanner (scanning from bottom to top) to scan the bottom of the page first. This allows for the page to appear right side up on the screen. Then slide the book over (not flip it upside down) to scan the other side of the book. This will ensure continuous flow as you progress through the comic book. Not only will you save time by not having to “flip” the picture to have it appear right side up, but also, pages are rarely missed when scanning using this method.
5. If needed, once the comic has been placed to your satisfaction, close the lid, and place a book on the cover (some scanner chose to leave the lid open and place the book directly on the page being scanned) to ensure that the edge of the page, closest to the binding, will not appear “blurry”. This method allows to easier editing and crisper pictures once the whole process is complete. Some scanners also place a towel or cloth over the scanner and it’s edges, to prevent outside light from affecting the quality of the scan. Again, this is an individual choice, as not all scanners use these options.
NOTE: It may be beneficial to use a black piece of paper or cardboard to place behind the page you are scanning, to prevent images from the other side of the page from coming through. Experiment to see what is best for you.
Scanner Software Settings
• Establish your Scanning Resolution, as well as your Output Resolution. Ensure that 300DPI is selected for both options.
NOTE: Not all scanning applications have the output resolution, but will contain the scan resolution as a single option. The selection remains the same, regardless.
• Turn on your DESCREEN option. Some scanner models will scan the darker colors in various shades. DESCREEN helps to cut it this down considerably, and normalize the darker shades more consistently. There are other rationales for allowing this option to be turned on as well, such as lines and dots appearing on the scan, and so forth. DESCREEN helps eliminate these unwanted effects, which will allow for less editing later on.
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• Choose your color setting. Most scanning application have True Color as the highest option. If True Color does not appear as an option, then simply select the highest color option available, listed in the setting menu of your scanning software application.
Previewing The Scan
Most Scanning software has the ability to preview a scan. This is extremely beneficial, since you can get a first hand look at what your scan will look like, adjust it if it’s crooked, select a specific scan area, and in identifying the quality of the scan such as blurry areas around the binding.
• If the scan is crooked and needs adjustment, you can choose to either adjust it later on within Photoshop, or adjust the comic on the scanner and continuing to preview until you are satisfied with the results. It’s preferable to try and make sure that your scan is as straight as you can make it. You can do this a couple of ways, by aligning the comic with the bottom, top, or the side of the scanner. This will allow you to have a straight edge to work with later on, when editing.
• If the side closest to the binding looks a little blurry, or the shade is a little off compared to the rest of the page, then you will need to readjust the page placement, and the book you are using for weight, and continue to preview until you are satisfied with the results, and you feel you are ready to edit the page itself.
Once you are satisfied with the alignment, and have ensured that all areas of the page look satisfactory, then the last step is to select the area you wish to scan, using the ellipse tool on the preview window directly. Do this by clicking in the preview area, and dragging until you have encircled the area of the scan, and adjusting the height and width as you see fit. It is suggested that you expand the area a little, to give room to the scan, where the actual cropping will occur later on, during the editing phase.
NOTE: There are some scanning software that have the ability to auto-select the scanning area. Always verify this area prior to scanning the final result, as it may not always be accurate.
NOTE: If your scanner is a Canon scanner, with Scangear and Arcsoft, this preview window will give you the ability to do much more that the average program.
Scanning The Image
Now you are ready to scan the page, so go ahead and scan it. Once finished, you will experience one of two things, which relate directly to the software you are using to scan from, and the software you are using to scan with:
1. Once the scan is finished, close the preview window, and the scan will be directly within Photoshop, ready for editing.
2. Or, click on the SAVE button in the preview window, which will then automatically close it, and place the scan directly within Photoshop.
Either way, the scan will end up in Photoshop, and will be ready for editing. But, there is one more thing, which needs to be done, before you can start editing your scan.
Saving The RAW File
There is much discussion surrounding the format in which to save the scan you will be working on, as some scanners want "no loss" of image quality. The only way that this is truly done is by saving the initial image in a lossless format (TIF, PNG, PSD, etc.) and editing it that way until you are completely done, and THEN converting it into a JPG file.
“Considering that you have to transfer the files (as a scanning group), I would save the raw scan as a JPG. Then, also group several JPG’s together and compress them into files that are "under" 10 Mb. So, a file for pages 1 to 5, one for pages 6 to 10, etc. You won't lose any more quality IF the first step that the editors do is covert the JPG’s into a lossless format. I have a Photoshop batch job that just takes JPG’s and converts them into TIF and saves them.”
Provided that the final result is a scan you are completely happy with, it makes no difference which steps you take to get there. It’s an individual choice. If you are just starting, then perhaps the simplest solution for you, would be to save the scan as a PSD, since you are already working within Photoshop. But again, this is your choice.
Once you have completed your editing, and have saved the final result, there really is no need to keep the original RAW file (in whatever format you saved it as). They are fairly large in size, and accumulated, could take up much space on your hard drive, or occupy many DVD-R’s.
“Most scanners I think don’t save their RAW files. They generally edit and save over them, which is one reason I think some scanners work with JPG instead of TIF and then convert to JPG. I only know of one person that "considered" burning RAW files, and that person was only going to do this as practice or some kind of benchmark so that the same scan could then be done again perhaps with different techniques, or when the respective scanner was more experienced.
Personally, I scan as high resolution JPG, sometimes as TIF, then do my crop/rotate and save as separate set, and then do my color edits, which are also saved as separate file. After final audit, when everything looks good, I delete the edits set because I have the CBR file, which I will eventually burn to disk.
For one book, 2 sets (RAW, plus CBR) exist, and when I’m closing in on 300 scans, I’ve probably wasted a lot of CD-R’s and DVD-R’s. I think I may stop saving all my RAW files, except maybe only for specific books I want to save. My thinking is that if I have the RAW files and CBR set, I can maybe re-edit, if the standard goes to 1280, as 99% of my scans are 1024. I keep the RAW files, just in case I make a mistake. If I did, at least I would have the RAW files.”
Again, this is your choice, as you are the scanner, and it is your comic that you are sharing.
Everyone has their own method of doing things, but it is suggested that you do your entire scanning first, and THEN do your edits. This way, you are not distracted while you edit, or scan. Mistakes, while not life or death, may cause major delays to your scan.
Pre-Edit Preparation
Editing is the process by which the final result is judged. This consists of several steps and categories, from color adjustment, to cropping, to joining two pages together. Each step is as important as the next, and integral in producing the final picture.
Remember that, others will be viewing your scan, and they will appreciate the time and effort you have taken in producing such a fine scan. So please, take your time, be patient, and never be afraid to start over if you feel justified to do so.
The rewards of a thorough scan far outweigh those of a rushed scan, and are appreciated by the community.
Before you start editing your scan, make sure that Photoshop is set with the following:
1. From the VIEW menu, make sure that RULERS is set to ON
2. From the VIEW menu, make sure that SNAP is set to OFF
3. On the right, you should see 4 smaller windows: Navigator/Info/Histogram, Color/Swatches/Style, History/Action, Layers/Channels/Paths. If any of these are not displayed, they can be turned on from the WINDOW menu and selecting any of the options from the specific missing window
You’ll also need to know certain other tools, which you will need as you progress with your edits. If you look on the left side, you will see a narrow window, which is called the Control Panel.
• The top left tool (the one that looks like a dotted line box) is called a Marquee. It selects certain parts of the page for editing.
• The top right tool (looks like a pointer) is called a Move tool, and can move objects around on the page.
• About halfway down, you'll see the Hand Tool. This won't edit the book at all, but instead will move the page when you are zoomed in for editing
Now, you are ready to start editing your scan.
Rotating
1. The first thing you need to do is set the VIEW to FIT SCREEN. This is done by double clicking the HAND tool. Or, you could simply ZOOM IN or ZOOM OUT yourself until you are happy with the view of the scan on your screen.
2. Next, find a horizontal or vertical line within the image, which should be straight. This should NOT be one of the scan’s edges, as the books aren’t always printed perfectly, nor are they always cut perfectly. Sometimes, the edges of other pages will show up on the scan, which can also have an effect on how straight the page is. Typically, the panel borders are a good choice, although some artists will use crooked panels. Sometimes it's text, or the text balloons. Sometimes, it’s simply the outer image of the page. There’s no rule, so use whatever looks reasonable to you.
3. Next, select the MEASURE tool. This can be found in the EYE DROPPER tool’s menu, located on the Control Panel. Click on the eyedropper until it displays the other tools, and then select the MEASURE tool. It should look something like a ruler
4. Once you have the MEASURE tool selected, zoom in towards one edge of the straight line you’ve selected. Note: If part of the panel border isn’t clearly visible on the edge, you can use a different part of the line. That being said, the longer the straight line is, the more accurate this procedure will be.
5. Now select one specific part of the straight line – for example, select the topmost dark line of the panel, as shown here:
6. Now that you have selected one point of the line, click and drag the MEASURE tool, towards the other side of your straight edge, stopping once you reach that point. The trick with this is to select the exact same part of the border, therefore, as you drag, the MEASURE tool will display a line, and this line can be used as a reference point.
7. When you are done, zoom out. The line left by the MEASURE tool should parallel the straight edge at the same point, across the entire edge of the line you have chosen.
8. Go to the IMAGE menu, and locate ROTATE CANVAS and select ARBITRARY. When the dialog box comes up, there should already be a value entered in the ANGLE text box, and the appropriate CLOCKWISE / COUNTER-CLOCKWISE button should be selected.
9. Click OK and the page should straighten out.
10. To verify your straightening job, use the MARQUEE tool. This tool only makes straight lines, so the straight line from the MARQUEE should always line up perfectly with the entire straight edge you’ve selected. If it doesn’t, then you made a mistake.
If you’ve made a mistake, then either go to the HISTORY window on the right, and delete each of the prior steps until you’ve reversed the rotate, or go to the EDIT menu and select UNDO (Hopefully you didn’t do anything else in between then & now). Try again with either a new line, or the same line, following the same steps as before. Continue until you are satisfied with the results.
NOTE: Please be aware that the more you rotate continuously, the more loss in quality your scan will suffer. Always UNDO your Rotation before making another, to avoid any serious degrading of quality to your scan.
Cropping
Once you have successfully rotated the image, the next step before actually editing the image is to crop it. There are 2 trains of thoughts with regards to cropping:
1. Some choose to crop very little, in order to preserve the page as it was printed.
2. Others choose to crop as close to the panel borders as possible, leaving only a small amount of white space, in order to have the art fill the screen more, rather than a large amount of white border.
How you choose to crop your image is your choice. If you choose one over the other, and you realize you prefer the other option instead, there’s always the UNDO command. So experiment as you go, and find what works best for you.
One more thing you need to be aware of before cropping, is that the height may vary in the final result. The width will always remain the same, but no amount of cropping or resizing will affect the height to a pre-determined height. It will usually be consistent, but there may be times where it may be more or less than the rest of your scans. This will occur no matter what is done during the editing / saving process. Regardless of whether one page is a little higher or a little lower than the next, because the width remains constant, they will still look great.
Should you choose to keep the aspect ratio for both height and width, the image will appear somewhat stretched, thus the recommendation is to avoid doing such a thing.
NOTE: There are cases where artists have borders but extend an object (arm, leg, weapon, etc) outside of the comic panel into the border so the image becomes larger to include that item. Therefore, the image border and display size may vary from one page to another.
So let’s go ahead and crop your image.
1. First, enlarge the view on your screen to 100%. This is suggested, as, once the crop selection is made, and should you need to make any adjustments and require to zoom in a little closer to the edges, you will need to leave cropping mode to select zoom mode. If you enlarge first, it saves you that extra step.
2. Select the CROP tool, located on the control panel. Start on one corner, and drag the marquee down towards the bottom opposite corner and release.
3. Scroll the edges, to make any adjustments, to either enlarge or minimize the crop area, and drag the line to make the adjustments you wish.
4. Once you feel you are ready, and that you have verified the crop area, then simply double-click within the area to crop.
5. Zoom out until you can see the whole image on your screen, and verify your results. If they are satisfactory, then your crop was successful.
NOTE: At this point, you should probably save your RAW file. Saving as you progress is always a good idea, as you do not want to repeat what you have done if, for some reason, your program freezes or crashes on you.