SilverFast is the name of a family of software for image scanning and processing, including photos, documents and slides, developed by LaserSoft Imaging.
 | |
 SilverFast Ai Studio GUI | |
| Developer(s) | LaserSoft Imaging |
|---|---|
| Initial release | 1995 |
| Stable release | 9.2.4
/ May 7, 2024[1] |
| Operating system | Windows 7 and later macOS 10.13 and later |
| Platform | X64, ARM64 (scanner dependent) |
| Available in | Multi-lingual[which?] |
| Type | Image scanning, image processing |
| License | Commercial proprietary software |
| Website | www |
There are also other applications for image processing using digital cameras or printers and for 48-bit raw data image processing.
History
editSilverFast was introduced in 1995, it is still under development today. Some scanner manufacturers bundle their hardware with SilverFast software. Some of the features developed for SilverFast, especially in the area of color management, error detection and automatic dust and scratch removal, have been patented. The European Digital Press Association named SilverFast the "Best colour management software of the year 2008" for improving the dynamic range of most scanners and for creating ICC profiles automatically.[2] In 2011 version 8 was introduced, and HDR imaging software followed in 2012. SilverFast 9 has been released in 2020.
Patents
edit- 2005: Patent granted on barcode technology used for the Auto IT8 Calibration. (Karl-Heinz Zahorsky, EP 1594301, expired)
- 2008: Patent granted on technology used for SilverFast Multi-Exposure@. (Karl-Heinz Zahorsky, EP 1744278, US 8,693,808)
- 2023: Patent granted on the ExpressScan, a scanning method that reduces scanning time for flatbed scanners. (Karl-Heinz Zahorsky, EP 4109866, US 11,558,529 B2)
Products
editSilverFast is offered individually adjusted to the respective scanner model. If several scanners are operated, it is therefore necessary to purchase a corresponding number of additional licenses. Upgrade rates are also offered when purchasing a new scanner.
Overview of the available products:
| Scanner Software | HDR Software | Archiving Software | Photoshop Plug-ins |
|---|---|---|---|
| SilverFast SE | SilverFast HDR | SilverFast Archive Suite 1), 2) | SRDx Plug-in |
| SilverFast SE Plus 1), 2) | SilverFast HDR Studio | ||
| SilverFast Ai Studio 1), 2) | |||
| SilverFast X-Ray |
1) including: Multi-Exposure 2) optional: ICC Printer Calibration
Optional features
editAs marked in the table above, some products are available with additional features:
Multi-Exposure – Multi-Exposure is an exposure blending technique for scanning transparent originals like slides, negatives, and film strips with increased dynamic range.[3] This is accomplished by scanning the original multiple times with different exposure times, increasing the dynamic range and preserving detail in the light and shadow areas of the image. [4][5] Multi-Exposure does not work with reflective originals and differs from "Multi-Sampling," which also scans multiple times but with unaltered exposure.
ICC Printer Calibration – The SilverFast ICC Printer Calibration calibrates the printer using a previously calibrated flatbed scanner as the measuring device for profiling the printer.
SilverFast Scanner Software
editIt can be used as a stand-alone application, as a Photoshop plug-in, or as a universal TWAIN module. Versions include:
- SilverFast SE[6] (basic edition)
- SilverFast SE Plus[7] (plus edition / with Multi-Exposure)
- SilverFast Ai Studio[8] (premium edition)
- SilverFast X-Ray (a special version of SilverFast designed to digitize radiographic films for scientific and medical radiography)
SilverFast HDR Software
editSilverFast HDR is a computer program for processing 48-bit raw images. Many newer scanners are able to output the image directly with all existing data instead of breaking it down to 24-bit. This 48-bit raw image can be saved immediately and digital processing performed later.
- SilverFast HDR[9] (basic edition)
- SilverFast HDR Studio (premium edition)
SilverFast HDR contains the functionality of SilverFast Ai Studio for 48-bit raw data, such as defining output size and resolution, auto-adjusting of highlights and shadows, three-part histogram, gradation curves, selective color correction, unsharp masking, color cast removal slider, color separation, and CMYK-preview. SilverFast HDR can be used as a native plug-in for Adobe Photoshop, as a universal TWAIN module, or as a stand-alone application.
The HDR Studio has AACO (Auto-Adaptive Contrast Optimization), JPEG 2000, USMPlus (Unsharp Mask Plus), CloneTool and PrinTao.
HDRi (64Bit RAW data with infrared channel)
editWith version 6.6.1 any SilverFast HDR version supports the proprietary RAW data format HDRi. These 64-bit HDRi color files and 32-bit HDRi greyscale files contain additional 16-bit infrared RAW data besides the 48-bit color RAW data and 16-bit greyscale RAW data respectively.[10][11] Therefore, a scanner with an infrared channel available to the software is necessary. This RAW format can keep any readable image information for later post-processing. The acronym "HDR" as used by SilverFast is not related to High-dynamic-range imaging, a widely used technique to increase the dynamic range of (digital) images.
The data format is:
| Format | Encoding | Compression | Color space | Color depth (Bit per pixel) |
Dynamic range (Dimensions of 10) |
Relative gradation |
|---|---|---|---|---|---|---|
| HDRi (.tif, .tiff) |
RGB (linear) | none | RGB | 64 = 48 + 16 (infrared channel) | 4,8 | 0,0014% |
| RGB (linear) | none | RGB | 32 = 16 + 16 (Infrared channel) | 4,8 | 0,0014% |
SilverFast Archiving Software
editThe SilverFast Archive Suite includes SilverFast Ai Studio and SilverFast HDR Studio with an integrated color management system. This package is suitable for archiving slides, negatives, and photos, whereas the post processing can take place anytime after scanning.[12]
- SilverFast Archive Suite - consisting of SilverFast Ai Studio and SilverFast HDR Studio (premium edition)
PrintTao 8
editPrinTao 8 has been discontinued. PrintTao 8 was a software solution for Canon and Epson large format printers. It could be used as a stand-alone application or as a plug-in for Adobe Photoshop and Adobe Lightroom.
PrinTao 8 handled color management and all printer driver settings. It contained various printing templates like pack templates for portrait photographers or gallery wrap templates for printing on canvas.
SRDx Photoshop Plug-in
editSRDx (Smart Removal of Defects) is a plug-in for Adobe Photoshop to remove defects like dust particles, specks, small scratches and finger prints from digital images.
Most dust and scratch removal tools use blur effects which degrade overall image quality. SRDx works without any unsharping effects. SRDx uses an adjustable automatic detection of dust and scratches that can be fine-tuned manually using a defect marker and a rubber tool.
SilverFast DC
editSilverFast DC has been discontinued. SilverFast DC was a stand-alone software for digital camera image processing. It contained features for reading the image data from the camera, for processing, optimizing, and archiving the images on the computer, as well as for printing the edited images.
IT8 calibration & color management
edit
Scanner calibration: SilverFast is equipped with a color management system that enables largely automated IT8 color calibration of the scanner using IT8 targets supplied by the manufacturer LaserSoft Imaging.
- according to ISO standard 12641-1 (from 1993): conventional standard
- according to ISO standard 12641-2 (from 2020): new standard for a more precise IT8 calibration with about 3 times the number of measuring fields. LaserSoft Imaging cooperated for creating this standard.[13][14]
Printer calibration: SilverFast also enables printer calibration by printing a color table and then scanning it using an already calibrated scanner to create an ICC profile.
Supported devices
editSilverFast supports 325 scanners.[15] Most Microsoft Windows-only 35mm USB scanners sold under various names are not supported[citation needed]. Each scanner model requires a separate license.
Heidelberg drum scanner
editSilverFast 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.
See also
editSoftware supporting many scanner models:
- Image Capture – scanner software for Mac OS X, bundled free with the operating system
- Scanner Access Now Easy (SANE) – multiplatform open source scanner API
References
edit- ^ Version History
- ^ Awards: History by brands: LASERSOFT Archived 2011-07-10 at the Wayback Machine, European Digital Press Association, retrieved December 26, 2010.
- ^ Test Report: SilverFast Multiexposure and Scanner Dynamic Range by Dietmar Wueller, Image Engineering, February 5, 2007, retrieved July 23, 2024 (pdf)
- ^ David B. Brooks, The Limits Of Film Scanning; LaserSoft’s SilverFast Multi-Exposure Increases Effective Dynamic Range, Review on SilverFast Multi-Exposure, shutterbug.com, retrieved July 23, 2024.
- ^ Patrick Wagner, Which kind of quality increase does MultiExposure provide?, FAQ, Scan Software Silverfast, filmscanner.info/ScanDig, retrieved July 23, 2024.
- ^ Sally Wiener Grotta and Daniel Grotta, "With SilverFast SE, your scans look more like the originals," Macworld August 25, 2009, reprinted from PC World.
- ^ Larry Jordan, LaserSoft SilverFast 9 SE Plus Scanning Software, Review on SilverFast SE Plus 9, larryjordan.com/, retrieved July 23, 2024.
- ^ George Schaub, Ai Studio 8 Scanner Software Review, Review on SilverFast Ai Studio 8, shutterbug.com/, retrieved July 23, 2024.
- ^ Patrick Wagner, Software test report SilverFast HDR by filmscanner.info/ScanDig, retrieved December 26, 2010.
- ^ it-enquierer.com: Article on HRDi and iSRD
- ^ silverfast.com: HDRi - 64bit RAW data including infrared channel
- ^ Archive Suite Test Report by photographer John Barclay, May 6, 2010, retrieved December 26, 2010.
- ^ New ISO Standard for Scanner Calibration press release on pr.com
- ^ "LSI Fogra Gutachten 12641-2 2019 / LSI Fogra 12641-2 2019 Advanced Target Chart Layout Certification Report" (PDF). Internet Archive.
- ^ Products supported by SilverFast, LaserSoft Imaging
Further reading
edit- Karl-Heinz Zahorsky. Create Brilliant Images with SilverFast. - SilverFast E-Book, 2021.
- Taz Tally, Ph.D. SilverFast - The Official Guide. - Sybex, 2003. ISBN 978-0-7821-4197-9
- Sascha Steinhoff. Scanning negatives and slides: digitizing your photographic archive - Rocky Nook, 2007. ISBN 978-1-933952-01-7