Weird blurry (low quality) ima

Mr NERV · 发表于 2022-7-8 13:09:10

Hi, I'm new to AutoCAD, I've been using it for the past half year and have gathered enough knowledge to draw anything I need for my project, but I'm having problems plotting my drawings to .pdf (or printer or any other device).

When i plot with shade plot "Wireframe" the result is perfectly fine, the lines are clear, everything is easily readable. But when it use the shade plot "Hidden" or "Shaded" or any other than "Wireframe" i get a fuzzy image, that is hardly readable and difficult to hand out to someone.

It is the same no matter what setting i change. The image quality is poor already when i click "Preview", so it seems that it must be something within AutoCAD.

Here is an example of plotting my drawing, notice that the only difference in the settings is the "Shade plot" setting:

http://i.imgur.com/ztZ8mxF.jpg

Thank you for your help.

ReMark · 发表于 2022-7-8 13:23:54

Thank you for your effort. Let me just explain that i fully understand what DPI is and how it works. My misconception was based solely on on the assumption, that everything in my "hidden" .pdf was drawn wrong, because i did not zoom in enough and Adobe Acrobat has a weird way to show some lines when zoomed out. My assumption that everything is wrong was triggered by the "unreadable" rendering of the annotations, which i still think is a problem, that i have to deal with.

See this example. When zooming to 800% in my .pdf i see now, that the lines are drawn OK (except for the compression artifact, which are gone when i use PDFCreate) so it's really not a DPI problem as I falsely assumed before.

But the number 332 (text) from the annotation is really rendered weird. It looks like its bolded or extruded to a level it's hardly readable.

So it looks like i have to find out why the annotations look like they look after converting.

Again thank you for your help! I'm really surprised at the quality and swiftness of this communities response.

tzframpton · 发表于 2022-7-8 13:35:34

Is it possible to create a visual style in AutoCAD that has the same exact settings as the shade plot setting called "Legacy Hidden". This shade plot style creates excellent quality vector PDF output, but leaves a lot to be desired in the way of aesthetics. Also the multitude zig-zagging lines is confusing to the eye. A hidden style is much more simplistic to look at, but the PDF output for visual styles based on the hidden style, generates raster PDF output when vector output could easily be generated from the simplistic line geometry that is represented by a hidden visual style.

Does anyone have any thoughts on this?

tzframpton · 发表于 2022-7-8 13:52:32

Hi my friends. I am trying Autocad2019, and I faced that same issue. Blurred and horrible images, rasterized, from hiden viewport plotting. I find out that you can plot through adding a PostScript Level 1 or similar, then generating an EPS file, or dwg to pdf, whatever, and then in AI I finish some page configs and logos and etc. Many people may do this way. But in the latest versions of Autocad, seems they, among a thousand of awful changes, have discovered also a way to destroy the plot productivity (And I´m building a book to myself to revert those unproductive and desperately annoying changes). But I did find how to fix it, this issue of hidden blurred plotting. I use paper space (dont know if via model also works), and by clicking the viweport border with the right button, choose > Shade Plot > Hiden. You will get vectorized hidde perfect and light images and files, just like it was during the Golden ages of AutoCAD, when they did not put teenagers who never worked in life, to develop new interfaces to sell the "best newer version with 10.0000 ways for you to revert for a clever, light, clean and fast way to work, and not waste 95% of your time solving software issues".

And NO, hidden does not mean RASTER, never meant. God bless Autodesk.

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Mr NERV · 发表于 2022-7-8 14:02:12

I have searched this topic online many tips with no concrete answer. This worked for me after many hours of messing with the settings of the drawing.

Here is what I wanted to do, so that you know if you are on the same page as me. I wanted to plot to pdf or print out of our in house printer, a 2d dimensional drawing with a 3d representation of what was to be built.

The text style of your dimensions and text cannot have "shape" to it. Most of the text styles have shape that makes them up. For example, if you had a T in you drawing, that T would be made up of lines that trace around a T made up of one vertical line and one horizontal line. You want that tee to be made up of only a vertical line and a horizontal line. The ROMANS text style works for this. Be sure all of your dimensions and text are using the ROMANS style in your drawing.

Next, when you go to print, set the Plot Style Table (Pen Assignments) to acad.ctb.
Set Shaded Viewport Options to Legacy Wireframe

No other changes.

This has worked for me on each drawing where I have wanted a 2d / 3d mixed drawing without the blurry dimensions and text ruining my work.

Hope this works for you.

tzframpton · 发表于 2022-7-8 14:14:47

I make a flatshot of the view. rather then generating a image.

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