Loss of image resolution when plotting

[V8S5]

Help.

 

Am using AutoCAD MAP 2009, HP5500 with the latest firmware and drivers. Have a Tiff image inserted in model. The Tiff image is high resolution - looks fine when viewed on the screen and with image viewing software, but when plotted the image resolution is much degraded. It appears with larger pixels and very grainy. Is there a setting or two we nees to adjust? Has anyone any ideas to improve the plotted version of the image?

 

Cheers

[wannabe]

What was the TIFF created from? I.e a JPEG picture, an AutoCAD produced DXF etc.

[V8S5]

The tiff was created by a software package called CARIS, which is a software specifically designed to process water depths measured by a fancy ech sounder. It effect we create a DTM of the seabed and then apply colour gradients to the gridded surface and this is the Tiff image. The resolution plotted seams the vary from plot to plat with the same tiff for both images - strange?

[wannabe]

If you had the drawings in another format I would of suggested reverting to those in order to improve the plot quality.

 

But still, my best guess would be to either convert the image to PDF and see if the loss of quality when printed out is less than what is lost when printing direct from TIFF.

 

I would also faff arounf with JPEGOUT, BMPOUT etc just incase there is any improvements by printing out this CAD drawing as another file format.

 

You did say the image quality is set to highest in the custom properties? The best setting on mine is 300dpi.