Why does scanner need to be calibrated




















List of Partners vendors. William Harrel. William Harrel is a former Lifewire writer and a computer technology editor, writer, author, and instructor with over 30 years' experience. Facebook Twitter. Updated on September 11, Tweet Share Email.

What to Know Prepare a color reference sheet or IT8 target with known colors and scan it with color-management and correction features turned off. Launch the scanner profiling software, load the target, and define the analysis area. Make visual adjustments or let the software adjust. Or, download and install the device's ICC profile for color management. Was this page helpful? Thanks for letting us know! Email Address Sign up There was an error. Please try again.

You're in! Thanks for signing up. There was an error. Scanner calibration from the Document Glass is complete. Remove the Scanner Calibration page from the Document Glass If the Touch Screen indicates failure, select [Close], and then repeat the scan again using steps Place the calibration page face-up, on top of the three sheets of paper.

Adjust the paper guides to fit against the paper in the DADF. NOTE: The paper width guides should be adjusted to fit against the calibration page.

If the page is misaligned, the calibration procedure will fail. The offset values are then used when producing scans so that the correct portion of the document is captured. Scanner calibration should be carried out only if you notice offset problems with the scanned images. The scanner is calibrated before it leaves the factory. It needs to be calibrated again only rarely. To view an animation of this procedure, right-click this link: Calibrate the scanner in English , and click Open in New Window.

From the Home screen, scroll to and touch Administration. Touch Calibrate and then follow the on-screen instructions. Select a location. Europe, Middle East, Africa. Here you activate the option User-defined ICC profile names. From now on you can give a name to every created profile. If this option is deactivated SilverFast will name all profiles alike which means that previous profiles will be overwritten.

In this case it would not be possible to have several profiles. If you skip the first step the steps 3 and 4 will also be redundant for you and you only have to do the next step. Now you can put the IT8 target into the scanner and prescan it. Define the scan area by dragging a the scan frame around the outer borders of the target.

Click at the calibration button to start the process. In the appearing window you see the target again after an automatic prescan. Here you have to define the frames of the inside area which contains the color- and grayscale with the help of the four-sided dotted frame. Inside the frame are positioning markers for the color patches which are lying precisely over the color patches if adjusted correctly see screenshot. When now clicking start SilverFast identifies the reference file for that target with the help of the printed bar code and will create the corresponding ICC profile.

If SilverFast notifies that the reference file could not be found you have to proceed like described on your questions and answers website. If you did not skip step 1 you have to name the profile for saving.

It is recommended to include the scanner model, the actual date and the target type into the profile name. This way it is ensured that you get a clear overview of your profiles. From now on every picture scanned with SilverFast Ai will consider this profile as long as you do not deactivate it or choose a different one.

Open the SilverFast preferences to choose a specific profile for the following scans. There you can choose the scanner profile to be used.

User of a flat bed scanner with integraded transparency unit can choose between profiles for reflective and transparent originals. Like already said it is paying off to include all important information into the profiles name so that you can select the right profile from a list.

The accomplishment of the IT-8 color calibration with SilverFast Ai Studio is an easy task and does only take a few minutes. If creating different color profiles with different targets the choice of the desired profile is only a mouse click away in the preference dialogue.

The great advantage of the IT8 calibration with SilverFast is that the active correction profile will be assigned automatically to your scans. So you never get to see the incorrect scan file. SilverFast is processing the original scan files and the active corretion profile automatically into the corrected scan file.

While requiring about 15 minutes for the first TI-8 calibration you will only need a few minutes as an experienced user. On the basis of some scan examples we want to show how much the image quality can be improved from a scanner calibration. Please click on the following images, a windows will open which will change between the non-calibrated and calibrated image.

For the scanner an ICC profile was created and we digitized the pictures once with and once without assigning the profile to the images. You can clearly see that a professional scanner like the Nikon LS ED does a very good job even without a calibration.

With the IT8 calibration, however, the colors are displayed more naturally and you save the time for image editing afterwards. Both adjacent pictures were digitized with the low-priced Reflecta ProScan which is favoured from hobby and semi-professional photographers. Here we have created a profile with SilverFast Ai Studio as well to show you the comparison. You can see that the differences between the non-calibrated and calibrated images are strong.

The non-calibrated images have a color fault and should be image edited. However the calibrated ones are very usable. It stands out that the images with IT-8 profile have more natural colors as the originals look like in reality and on the film. We did not do manually corrections like adjustments in the scan software in order to present an objective impression of the quality improvement. As you see even the calibration of a high class device like the Nikon Super Coolscan ED leads still to improvements of the image result.

In contrast the differences regarding the low-priced Reflecta ProScan are very big. Generally speaking: An IT-8 color calibration effects the image quality the more the cheaper the scanner is. Not to speak of the time saving you have with a IT-8 calibration because of the image editing shortfall it becomes clear how important an IT-8 scanner calibration for raising image quality is.

Most scanner achieve their full performance only through a professional scan software like SilverFast Ai Studio in combination with an IT-8 calibration. No input or output device can be so easily calibrated like a film scanner or a flatbed scanner.

The raise in image quality from the IT-8 color calibration for scanners is very large. Without a color calibration you perhaps have to correct the scan faults of thousand or tenthousand of image files.

With the help of an IT-8 color calibration the scan faults are detected once and are corrected automatically for every scan. The IT-8 calibration supplies a considerable image quality improvement and saves time for the user, because the scans are only little in need of image editing. Back to the index colour management.

This site has been translated from German into English and serves for a better understanding for the English speaking visitors of our website. By differences the content of the German original website holds. Changes on the original German site after the translation will not be maintained automatically on the English site. Scanner calibration with IT-8 targets If you have decided to digitize your own pictures with a scanner on your PC the results can be very poor for the undiscerning user: The colors on the monitor can strongly differ from the actual original sample with its great and nice colors.

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