I'm really at my wit's end. It's seriously affecting my design & post processing workflow.
This is a problem that I have never encountered before in my 10 years or so of using Photoshop. I am currently using Photoshop CS3. I have no idea how this happened, but when I tried to use the brush tool few weeks ago, with my soft brush settings set at default, I realised that there were hard lines or edges whenever I tried to draw over the canvas with it. The same applies for the eraser tool. U guys can take a look at the image I have posted below.
I have done everything possible. Reset all my settings, including the brush settings, tried switching my resolution from 32 bit to 16 bit, tried working in 16 bit RGB mode instead of 8 bit RGB which I used all the time without any problems in the past, uninstalled and reinstalled Photoshop & still got this same disastrous effect. In this image I used filled the layer background with gradient fill, and as u can see the gradient tone is rather smooth.
Next, I created a new layer and clicked the brush tool on the canvas a few times, at around 700px size and set at 100%. See the difference? Please help me out here guys, any of you who have encountered problems like this before.