VintaSoftTwain.NET Library is a pure .NET Library which allows to control work of scanners, cameras and any other TWAIN devices.What's new in this version: - Acquired image can be saved to a new or an existing PDF document compatible with version 1.4 or earlier of PDF standard. - Exception mechanism has been added. All properties and methods throw exceptions if an error occurs. - Despeckle algorithm has been updated. You can see more info about library here: http://www.vintasoft.com/vstwain-dotnet-index.html.