SF TIFF Viewer

Readers and printers the readers are boxes with a translucent screen in the caught front to which an image of a microform projects. They have advisable trimmings for any microform is working. They can offer an option of extensions. They must generally motor to advance and to rewind the film. When basing signals are registered in the film that use a reader who can read the signals to find any image required. The portable readers are the plastic devices that double to take; when they are open they project an image of the microfiche ignited to a reflexive defends. For example, with M. of Saint Rat, Atherton Seidell developed a simple one, cheap ($2,00 of 1950), device of monocular vision of the microfilm , known like " Spectator of Seidell, " that was sold during the years 40 and years 50. [13] a microfilm printer contains a copied process of xerographic, The First Group like a photocopier. The image that will be imprimirá projects with the ignited synchronous movement to the drum. These devices offer the small previous inspection of the image for the operator or the previous inspection of the same size of the image, when a printer of the reader is called. The printers of the microform can accept the positive or negative films and the positive or negative images in the paper. The new machines allow that the user explores an image of the microform and except her as digital file - down sees the section in the conversion of Digitaces. I've been basically following the standard examples on how to do this: - Read the image from a file - set the current frame - write the frame data to an output stream and ended up with this code: <snip> System.Drawing.Image b; System.Drawing.Imaging.FrameDimension frameDim; //Read Tif from file (todo: change fromFile to stream) strFilename = ConfigurationSettings.AppSettings["Images.Dir"] + Request["filename"]; b = System.Drawing.Image.FromFile(strFilename); //Set current frame frameDim = new System.Drawing.Imaging.FrameDimension(b.FrameDimen sionsList[0]); int intFrame = int.Parse(Request["frame"]); b.SelectActiveFrame(frameDim,intFrame); //Save to output stream in jpg format Response.ContentType="image/jpeg"; b.Save(Response.OutputStream,System.Drawing.Imagin g.ImageFormat.Jpeg); b.Dispose(); </snip> Now, this code works fine with Group 4 Tiff files. However, I am dealing with Group 3 and here the application throws a "A generic error occurred in GDI+."-exception whenever intFrame>0 (basically I can view the first page and that's it). I saw other people in newsgroups having the same kind of roblem but it never got resolved. Is this a bug in System.Drawing.Image? Is there a patch or workaround for this?