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student needs help

Last post 03-14-2009 3:27 AM by Richard Annema. 5 replies.
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  • 03-10-2009 2:40 AM

    student needs help

    hi, i´m an industrialdesign student from Germany and i try to work with Brazil (vers. 2.0.0.14) for Rhino since serveral days. I want a higher resolution (dpi) after rendering to go on working in Photoshop. Sadly its still 72 dpi and dont know how i can change this. Sorry for my bad english.. Sorry for the newb question
    Filed under:
  • 03-10-2009 3:09 AM In reply to

    Re: student needs help

    Jan
     
    This one is going to be a FAQ....
     
    Anyway - here's the deal:  DPI only matters to anyone when you actually print an image.  "DPI" means "Dots per Inch" - there are no "inches" in a computer, only dots.  And this is the key to understanding what's happening here.
     
    Rendering resolution is measured in pixels.  If you want to increase the resolution of a rendering, you need to increase the "Width" and "Height" values under "Output Size" in the Brazil Renderer Settings dialog.  Naturally, rendering more pixels will take longer.
     
    All output images are saved from Rhino/Brazil at 72DPI.  This is the standard resolution of the screen display.  This means that if you take a 1024x768 image (measured in pixels) and print it at 72DPI it will come out 14.2 x 10.7 inches.
     
    The correct place to change the DPI is in Photoshop.  In the "Image Size" dialog, uncheck "Resample Image".  Note that this grays out the pixel size edit boxes so they cannot be changed.  Now change the DPI to whatever you want and press OK.  You now have an image that is 300 DPI but the same pixel resolution.
     
    BTW - the version of Brazil you are using is ancient - from mid May last year.  It should already have expired.

    --
    Andrew le Bihan
    Robert McNeel and Associates
    www.rhino3d.com
    www.mcneel.com
    "janmartin" wrote in message news:2050@brazil.mcneel.com...
    hi, i´m an industrialdesign student from Germany and i try to work with Brazil (vers. 2.0.0.14) for Rhino since serveral days. I want a higher resolution (dpi) after rendering to go on working in Photoshop. Sadly its still 72 dpi and dont know how i can change this. Sorry for my bad english.. Sorry for the newb question

    http://brazil.mcneel.com/forums/p/734/2050.aspx#2050

    Andrew le Bihan
    Brazil Product Manager
    Robert McNeel and Associates
    brazil.mcneel.com
    www.rhino3d.com
  • 03-10-2009 9:15 AM In reply to

    Re: student needs help

    thanks, that make sense, I thought es much.

    So I have to crack a better version of Brazil.. ;) joking apart, thanks a lot!!!

  • 03-10-2009 9:24 AM In reply to

    Re: student needs help

    I would recommend you use the current evaluation version which works, unrestricted,  for 15 days.

    --
    Andrew le Bihan
    Robert McNeel and Associates
    www.rhino3d.com
    www.mcneel.com
     
     
    "janmartin" wrote in message news:2052@brazil.mcneel.com...

    thanks, that make sense, I thought es much.

    So I have to crack a better version of Brazil.. ;) joking apart, thanks a lot!!!



    http://brazil.mcneel.com/forums/p/734/2052.aspx#2052

    Andrew le Bihan
    Brazil Product Manager
    Robert McNeel and Associates
    brazil.mcneel.com
    www.rhino3d.com
  • 03-13-2009 5:56 PM In reply to

    Pixel to DPI (in milimeters)

    And for those who are more used to milimeters (mm) here is the conversion formula.

    ex. For rendering a 300 dpi image to print on an A4 (290 * 210 mm) size paper.

    300 dpi = 300/25.4 dpmm (dots pr. mm) = 11.81 dpmm

    290 * 11.81 = 3425 pixels by 210 * 11.81 = 2480 pixels

    So here you need to render an image of 3425 * 2480 pixels (which is A LOT)

    Most printshops ask for 300 or more DPI, usually I say that 100 DPI is fine to print a very nice image, 200 if your really picky and have the time. On fairly large scale prints you can even go down to 50 - 75 DPI, because you don´t see large prints up very close.

    This is a good rule of thumb, I think.

    Filed under:
  • 03-14-2009 3:27 AM In reply to

    Re: Pixel to DPI (in milimeters)

    Correct - if anybody ever asks you for a billboard-size rendering at 600DPI, well... I say 1. inform the client of their folly* and 2. if they insist, charge them accordingly.

    * I do blame print shops for this.. when referring to DPI they tend to refer to the (halftoning) mask (offset/etc.) or dithering (common office printers), which determines how well the separate ink colors 'blend' together, rather than any relationship to how large the image is physically printed; of course it's usually because their clients in turn ask "what DPI do you use?" :)

    Richard Annema
    Director of Client Relations
    SplutterFish
    www.splutterfish.com

    Caustic Graphics
    www.caustic.com
    twitter.com/causticgraphics
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