Yes, I'm speaking about the brush tip.
So I'm talking about the original source image that has been used to create the specific brush itself. Is there a specific limit in photoshop that doesn't allow the resolution of the source image to be higher than a specific number?
I'm wondering about this because in other software that I'm using like Medibang you have the option to create a brush from a canvas.
Let's say your canvas size is: 1920 x 1080 and you want to create a brush with a cloud shape. You have already drawn the cloud and now you choose the option to create the brush from the canvas. But the dimensions for your brush "base" will be 150x150 because that's the default setting in Medibang and you are limited, and unable to create a brush which is higher than this resolution.

I'm wondering about this because in other software that I'm using like Medibang you have the option to create a brush from a canvas. Let's say your canvas size is: 1920 x 1080 and you want to create a brush with a cloud shape. You have already drawn the cloud and now you choose the option to create the brush from the canvas. But the dimensions for your brush "base" will be 150x150 because that's the default setting in Medibang and you are limited, and unable to create a brush which is higher than this resolution. |
Have you even consulted the documentation?
Create and modify brushes in Adobe Photoshop
There is a limit to the pixel dimensions of Photoshop Brush tips but the page states it is
| 2500 pixels by 2500 pixels |