Hi Klaus,
Thanks for your inquiry.
1: How would I set the resolution (dpi) for the PDF page in general? I have no idea where the 72dpi come from?
Currently it’s not possible to set the resolution of the PDF page.
Q2: How could I generate an image with a much higher resolution but still have it on the page approx. 8,6” width?
It can be possible to set the image quality by using the Quality property of the image object. Please refers to the below code snippet:
For metafile Image
// Create metafile image
PdfMetafile metafile = (PdfMetafile)PdfImage.FromImage(img);
// Specify the quality of the metafile
metafile.Quality = 80;
//For bitmap sepcify the image quality
PdfBitmap image1 = new PdfBitmap(Image.FromFile("image.bmp"));
image1.Quality = 50;
page.Graphics.DrawImage( image1, new PointF( 0, 0 ));
Documentation link:
http://help.syncfusion.com/ug_72/pdf/DrawingImages.htmlPlease try this, if this not helps you. Please provide your image with expected output. This would helps to provide you the more details.
Best Regards,
Bhuvana