Previously in VB6 I managed to hook into a DLL created from the Intel graphics library.

I had a speedy way to create thumbnails and to save a loaded images to a jpeg file where I can set the quality and other attributes.

Now in vb.net this is very simple withbuilt in methods but...

i) I do not know what type of sampling the thumbnail uses as the Intel library had a few choices depending on a tradeoff between speed and quality.

ii) The jpeg save justs saves but does not seem to offer a control over the quality.

Q. Is there a way to set the quality or other parameters when saving?

There seems to be a lack of documentation or examples around that do any more than the basics.