SilverFast Ai Studio 8

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SilverFast Scanner Software - приложение для профессионального сканирования на сканерах Canon, Epson и Nikon, с возможностью визуально наблюдать все изменения производимые пользователем в процессе изменения настроек в окне предварительного просмотра. 

SilverFast Ai - это профессиональное программное обеспечение для сканирования и обработки изображений.

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By the way, the NegaFix- function is not a special features of the Ai Studio version. Also the low-prized SE-version and the SE-Plus-version already have the NegaFix-dialogue integrated.

Where is the multiple scan function at SilverFast 8?

SilverFast Ai Studio 6.6 offered the possibility of a multiple scan, the so-called MultiSampling additionally to MultiExposure. Thereby, the original film can be scanned up to 16 times. Because the Scans with MultiExposure are much better than with a simple MultipleSampling SilverFast 8 offers only MultiExposure. If you still own a Version 6.6 of SilverFast you are able to use also MultiSampling. Based on the following examples, we want to show what a multiple scan provides in practice and how many times an original should be scanned in order to get some optimal results.

During the MultiSampling, as the name already says, the original is scanned several times. But contrary to the MultiExposure, the same exposure is always kept. These exactly equal single scans are then computed by the software to one single image, whereby the appearing sensor noises mainly appearing in the dark image areas are recognized by a comparison of these single images and removed.

The adjacent sample image has been scanned once, twice and eight times with a Reflecta DigitDia 5000. By clicking one of the thumbnails, an image window is opened with a 100% outcut of the red marked area that switches any 3 seconds between the single and the multiple scan.

What is noticeable is that the image noise is considerably reduced after the second scan. In the 8x scan, the image interference is further reduced, but the difference to the 2x scan is not so considerable anymore as it is between the first and the second scan. During the tests, the same image was also scanned 4x and 16x. Thereby, it became clear that the reduction of the noise indit increases with the increase of the scanning frequence, but the increase is lower from stage to stage. This means that the improvement of the image results from a 8x scan to a 16x scan is lower than the improvement between the 1x and the 2x scan.

We could see in our tests that the scan result is the better the more the original is scanned. While the increase of the quality between the 1x-scan and the 2x-scan is very considerable, by a further increase of the scans to 4x, 8x, and/or 16x it only slightly increases.

In case of multiple scans, the time factor plays a decisive role. A 2x scan takes almost double as much time as a normal scan. A 16x scan takes, depending on the scanner model, half an hour or even several hours of time. Thus, those who are not in a hurry during the scanning should make use of the multiple scan function. As the quality increases mainly have an effect on the dark image areas it is also a possibility to sort out the dark pictures of a collection and, separated from the bright ones, digitalize them with the multiple scan function.

IT-8 Colour Calibration

Which advantage does the IT-8 colour calibration offer?

As a screen without any expert calibration (see our page Screen Calibration) does not show the real colours, a filmscanner also does not provide any scans with 100% real colours. A red surface does appear after a scan as such, but it can occur that a scanner shows a red surface with the tonal value 200 (scale 0-255) only with the tonal value of 190, thus a little dark. By the respective calibration of the scanner, this difference is measured to the actual value and in the net scan, a correction is performed automatically.

Beside this imperfection, there are differences from scanner to scanner, even if the model is the same. By scanning an image with ten different scanners of the same production line, one gets 10 different scans that slightly differ in the colours. Also, if one scans an image ten times with the same scanner at different days, one gets ten different scans, as a scanner slightly changes its features depending on external influences as temperature.

With an IT-8 calibration, such effects can be compensated. Therefore, a so-called IT8 calibration target is needed; thereby, it is about a standarised template with numerous individual colour fields. This standard image is scanned and the calibration software measures the scanned colours in each of the colour fields. After that, the software compares the measured colors with an IT-8 reference table that contains the actual RGB values for each of the color fields. From this comparison, a table of differences that contains the colour deviations of the scanner results. From these profiles, the SilverFast software generates an ICC profile. In future scans, the scanned colors are corrected by this ICC profile so that one gets some scans with real color values.

The biggest advantage of an IT-8 calibration is then noticeable in the image processing after the scanning: the colors are real and natural, there is practically no colour correction needed in the image processing programe. A function as the auto-correction of the tonal value in Photoshop® does practically have no effect any more. Thus, by the IT8 calibration, one corrects the colour impefections of the scanner at the root and does not have to correct the scanner imperfections in the image processing afterwards in thousands of image files one by one. You will find some detailed information about the scanner calibration in our own page under the topic Scanner-Calibration.

How is the IT-8 color calibration accomplished in practice?

For filmscanners you normally use a framed 35mm IT-8 Target. This has to be handled like a normal slides and a preview scan has to be done. In this preview, the 22 x 12 colour fields are recognizable as also 24 grey fields thereunder from black up to white. By pushing the It-8 button in the SilverFast software, the calibration procedure is started where SilverFast shows a scan frame with a lot of small fields that has to be exactly adapted to the preview mask. This procedure is supported by an explaining dialogue.

As soon as the mask is positioned rightly and has the right size, the color calibration is started per mouse click. After one minute SilverFast has scanned the IT-8 target and compared the scanned colours with the referred table. The differences are filed afterwards by SilverFast in an ICC-profile archive.

In the following scans, SilverFast uses the individually created profile automatically and embeds it in the image files. By this way, one gets scans with corrected and optimized colours that almost do not need any further processing. This is best recognizable by opening such a file in Photoshop®. Photoshop® recognizes the embeded profile and employs it. By observing the tonal value curve, it covers almost the complete area of 255 values, as if an automatic correction of the tonal value has been made.

In case of flat bed scanners, the IT8 target is not provided as film but as a non transparent unit that is layed on the glass surface of the scanner as it is done with a normal paper image. Here, also a preview is done, the scan area for the IT-8 calibration is determined and SilverFast accomplishes the calibration automatically.

How often should the IT-8 calibration be accomplished in a scanner?

A scanner only provides good and real colour values if it is calibrated with the support of an IT-8 calibration target. But how often has such an IT calibration to be accomplished, is it a procedure that has to accomplished once or repeatedely?

All scanners have a certain radical error that is a certain grade of deviation in terms of colour that is construction-conditioned and that is within certain range of tolerance of the model range. This radical error is compensated by a unique IT-8 color calibration. But the features of the scanner change in the course of its life. As it is the case in a screen where the colours wash out or bleach a little in the course of the years, the colour representation of a filmscanner decreases in the course of the months and years. In order to compensate this creeping error, one should accomplish the IT-8 calibration once a month.

Those who attach highest importance to an absolutely real colour rendering in the scanning should accomplish an IT8 color calibration every day before a scanning session, as the quality of a scanner also depends on the day fluctuations. The CCD-sensor for example measures different values in a room of 40°C than in a room of 20°C surrounding temperature. Thus, the professional users who attach highest value to the color fidelity do calibrate their scanner every day. As this only consumes a few minutes of time, it is feasible without any problem.

Where are the reference files for IT-8 targets of SilverFast available?

On the IT-8 calibration target of the company LaserSoft Imaging, a bar code is contained with which the calibration software recognizes which reference file belongs to the target. This reference file is saved on the respective file and if not, the software searches automatically for a matching reference file on the website of SilverFast. Those who want to supply the reference files by themselves can do this on the website of SilverFast IT8 Reference Files.

Problem: SilverFast cannot find any Reference Data File

Those who buy the SilverFast Ai software mostly also buy an IT8 calibration target. The respective reference file is available in the CD of SilverFast. In case SilverFast does not find the right file, the software will search for it in the homepage of SilverFast.

But it happens to some users that SilverFast does not find any reference file at all. What is the reason for this? Many users do set the IT-8 calibration slide mirror-inverted by mistake into the scanner. Then the software cannot recognize the barcode and/or identifies it wrongly and asks for a reference file that is not existent anywhere. In this simple case, the problem is simply solved by turning the IT-8 target and restart scanning.

For the case SilverFast does indit not find a matching reference file neither on CD nor through an internet connection, there is still the possibility to download the reference file by oneself from the website of SilverFast, in this relation you can have a look to our respective chapter. Of course, LaserSoft Imaging only provides reference targets for the own targets. Those who obtain a target from a different resource must also obtain the reference file from the respective producer.

Which IT-8 target should be applied, Kodak or Fuji?

LaserSoft Imaging provides SilverFast Ai filmscanners by standard without targets. What is additionally available and/or by paying an extra charge is a Kodak or a Fuji IT-8 target, therefore please look for example to the commodity group IT-8 Targets in our filmscanner shops. The clearly higher price of a Fuji-target compared to a Kodak-target for small pictures could suggest that the Fuji-target is of a higher quality. But it isn't. The Kodak 35mm IT-8 target and the Fuji 35mm IT-8 Target are both of high quality. The price difference is only due to the number of items sold. As the Kodak-IT8-target is sold several hundred thousand of times but the fuji target only one by one, the price for the Kodak-target is respectively lower.

SilverFast 8 feature highlights

  • The new SilverFast 8 Preview Concept allows to assess the results even for complicated image optimization functions, such as iSRD and USM, at any time. A 100% zoom facilitates to properly evaluate and set the parameters of these tools.
  • The user interface of SilverFast 8 has been completely redeveloped according to current standards. The controls can be arranged flexibly and freely on the screen according to personal preferences. All major functions can be operated quickly and easily.
  • SilverFast 8 is fully capable of multitasking. For example, if several originals are to be scanned one after another, the user can already set the image optimization options for the second scan while the scanner is digitizing the first original.
  • SilverFast SCC is a tool to perform a selective color correction in a very simple manner. Selective color correction means that a single color is selected and changed specifically, but all other colors remain unchanged. A mouse click in the preview window easily selects the color to be changed: SilverFast's Selective Color Correction is particularly intuitive.
  • The Global Color Correction is an intuitive tool for controlling the color balance of the whole image. Particularly older images often show color casts that can be removed easily with GCC. The possibility to restrict modifications to half and quarter tones, allows effortless optimization of even those color shifts that are only visible in the very light or very shadowy image areas.
  • The WorkflowPilot is a wizard that guides the user in the correct order through all required processing steps. Depending on material and intended purpose there is a different workflow that will be worked on with the WorkflowPilot step by step.
  • SilverFast HiRePP will dramatically speed up the process of loading and working large image files.

Scope of delivery

Step 3

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Мелкие царапины и частицы пыли при сканировании приводят к заметным дефектам изображения. Некоторые сканеры оснащены дополнительным инфракрасным каналом, данные которого с SilverFast iSRD могут использоваться для детектирования и удаления этих дефектов.

The process chain (original - scanner / digital camera - monitor - printer) requires device calibration for accurate color reproduction. IT8 calibration runs automatically in SilverFast, using a combination of barcode technology and auto-alignment. SilverFast also utilizes the scanner as a measuring device to create an ICC profile for printer calibration.]9[

Supported devices]edit[

SilverFast supports 325 scanners]10[ and 214 supported digital cameras.]4[ Microsoft Windows-only 35mm USB scanners sold under various names are generally not supported. Each scanner model requires a separate license.

Heidelberg drum scanner]edit[

SilverFast Ai Studio supports prepress drum scanners made by Heidelberger Druckmaschinen AG (Linotype - Hell) on Microsoft Windows 2000, XP, Vista and 7, as well as Mac OS X 10.3-10.5 operating systems. Supported models include the Chromagraph 3300/3400, Tango/XL, Topaz, Nexscan, and Primescan.

SilverFast Ai Studio 8 is integrated into the workflow by many companies in the graphic arts industry who rely on smart algorithms and expert dialogs for image enhancement. Benefit from years of experience and use SilverFast Ai Studio 8.