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AD2 Textured Intensity brush nozzles - iPad makes brush as expected, MBP changes width at brush creation.

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This concerns defining new Textured Intensity brushes on iPad and MBP.  Both are running latest AD2; iPad is latest published iPadOS, MBP (early 2016) is running Monterey 12.6.8, latest for that hardware.

I am building experimental TI brushes.  My goal is to make them in widths that double from one nozzle to the next.  The nozzle widths I’m using are more accident/experiment than insight.

The Issue

The issue is that I have a TI nozzle I can turn into a brush on the iPad, but the MBP changes the entered width on the MBP.  This is the same PNG Nozzle file on both machines.  Same brush settings; iPad accepts brush width of 1424px, MBP makes a brush, but reduces that width to 1024px - silently, no alerts for the bug at the keyboard.

Surely the upper limit to Nozzle Width should be the same on both iPad and MBP?

Making this Mischief

On iPad:  I made the nozzles using the attached AD2 document, and exported the Nozzles with Export Persona. After making the brushes using the exported PNG files, I used the X8 and X4 variants in the associated Butterfly Wings.  My brushes are somewhat crazy, but AD2 did everything as expected.

Moving to MBP:  I airdropped the iPad AD2 document and PNG Nozzles to my MBP, and set about making the brushes in AD2 for MBP.  That’s when I noticed that AD2 was putting the fattest Nozzle on a diet - no 1424px width for the MBP, just 1024px.

The Cargo

AD2 source document created on iPad, X4 and X8 nozzles.

I will add at least a screenshot from my MBP to this bug report shortly.


  1. Document is 300DPI, reflecting my photographic background, just makes things simpler for my head.
  2. These are wide brushes, but I’m very pleased to report that I’ve not seen any hint of performance issues on either of my machines.  I’ve played with both Repeat and Stretch setting, no perceptible difference.
  3. Brush strokes inside the Butterfly wings deliberately have very acute angles, causing mitre issues/artifacts, which is why some got split into 3 separate segments each.

Nozzle X4.png

Nozzle X8.png

Nozzle Construction and Samples.afdesign

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If I understand your post, @LionelD, the issue is on your MacBook, but you've created this in the Bugs on iPad forum. Wouldn't the Bugs on macOS have been better? (If I'm right, a moderator can move the topic for you.)

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.1.2, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.1.2

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@walt.farrell You’re right, it’s confusing, and I wondered about the point you raise.  In my opinion the errant behavior is on the MBP, and I think the real clue lies in the fact the behavior differs in these two environments.

I hope a moderator or someone else who knows more than I do will send it in the right direction.


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  • Staff

@LionelD Part of the issue is that on desktops the brush sizes are limited to 1024px. Whereas on iPad, the sliders go far beyond. Which is something that will hopefully be corrected so both desktop and iPad have the same behavior.

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I have a somewhat ironic update:  If I make these very wide brushes on the iPad, export them and move the exported brushes to my MBP, its quite happy to import them (with no apparent modification) and make full-width strokes - i.e., strokes that are wider that the 1024px limit the MBP imposes when I try to create the brushes on it.

So if you have an iPad there’s a way around the MBP restriction.


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