How-To: Custom Rasterize (Affinity Photo)


Once your file is ready for the Rasterization part of the process, you’ll move into following the steps explained below. This macro set is for use in scenarios where you want to use a custom DPI (dots per inch / resolution) for your output/rasterization. Make sure that your document is set at the DPI that you’d like to use as the final resolution for your print/output. Once the document resolution is ready, follow the steps provided below.

Step 1: Custom – Rasterize PT 1

Click the first Macro in the process, “Custom – Rasterize PT 1”. You’ll find this macro in the “Macro studio” in Affinity Photo in a category named “Pixel Moshpit – Rasterization 2.0 (300 DPI)”. This will run the first part and will setup the halftone/rasterization, up until the part you’ll be able to enter your own custom settings.

Step 2: Double Click Halftone Layer Icon

You’ll now have to open the “Layers” studio and find the results that the first macro being played, creates. You’ll find a “Live Filter” layer (see below) that has been named “DOUBLE CLICK TO EDIT”. You’ll need to double click the layers icon to bring up the settings where you’ll enter your own custom halftone settings.

Step 3: Entering your custom halftone settings

  • Once the halftone layers icon is double clicked, the halftone settings pop-up dialog window will be opened (see below). This is where you’ll enter your settings. Best practice is when running a custom halftone, the cell size formula explained below, should match the documents resolution.

  • Screen: You Enter the type of halftone shape you prefer.
  • Dot: Choose the shaped method you prefer (Cosine is what Photoshop users know as “Elipse”)
  • Cell Size: You can enter equations here, for example 300/25. Where 300 = Document Resolution divided by 25 = LPI needed
  • Contrast: Make sure this is set to 100, otherwise your halftone results will no output properly.
  • Gray Component Replacement: Ignore
  • Under Color Removal: Ignore
  • Screen Angle: Choose the angle that best suits your needs. Most common are 22.5, 67.5, 0 (Horizontal), 90 (Vertical)

Step 4: Custom – Rasterize PT 2

Once you’ve completed entering your halftone settings, all that needs to be done now to finish the process is running the “Custom – Rasterize PT 2” macro to finish the process. Once click you’ll be provided the results in the layer studio, ready for output.

Final Advice

Like mentioned above, make sure to match the document resolution to the first number you enter in the formula you provide in the “cell size” settings, for the halftone dialog. Best use is testing the resolutions that your system can handle for output. The usual resolution inputs for rasterizations/halftoning are 300, 600, 1200 and 1440; some systems can handle them and some can’t so make sure to find out what works best for you.

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