@name427
FFascinating and most inconvenient to use. This method is very sensitive to image resolution and I had to experiment a lot to get it right. I don’t know the math behind it and it wouldn’t help anyway. There’s not much options for dithering in photoshop.
I tried using web dithering services, but they are terrible too.
Perhaps you know something that can help me.
I can reliably make 0.5mm pixels on my PCBs. Maybe 0.2mm if I work harder. And I want to have tiny ponies on my cirquit boards. :D
@pholed
Huh. It’s the lattermost step that’s fascinating; Photoshop’s built in error-diffusion dithering isn’t Floyd-Steinberg? It doesn’t have the characteristic anisotropy of that algorithm, to my eyes.
@name427
I used photoshop. First converted image into grayscale. Then played with color balance, contrasts, brightness curve, etc. After that I’ve converted the image into bitmap with built in diffusion dither feature.
So basically I messed with tones myself till it looked good.
@Ĉevaleto
Thank you for the link to the original picture I’ve added it to the description.
It’s photoresist film and a regular copper PCB, IIRC it was POSITIV20 aerosol. The color is so red because I’ve briefly etched it and copper surface became oxide free.
Since there was too much underexposed/overexposed pixels, etching it completely would have ruined the picture completely.
FFascinating and most inconvenient to use. This method is very sensitive to image resolution and I had to experiment a lot to get it right. I don’t know the math behind it and it wouldn’t help anyway. There’s not much options for dithering in photoshop.
I tried using web dithering services, but they are terrible too.
Perhaps you know something that can help me.
I can reliably make 0.5mm pixels on my PCBs. Maybe 0.2mm if I work harder. And I want to have tiny ponies on my cirquit boards. :D
Huh. It’s the lattermost step that’s fascinating; Photoshop’s built in error-diffusion dithering isn’t Floyd-Steinberg? It doesn’t have the characteristic anisotropy of that algorithm, to my eyes.
I used photoshop. First converted image into grayscale. Then played with color balance, contrasts, brightness curve, etc. After that I’ve converted the image into bitmap with built in diffusion dither feature.
So basically I messed with tones myself till it looked good.
Thank you for the link to the original picture I’ve added it to the description.
It’s photoresist film and a regular copper PCB, IIRC it was POSITIV20 aerosol. The color is so red because I’ve briefly etched it and copper surface became oxide free.
Since there was too much underexposed/overexposed pixels, etching it completely would have ruined the picture completely.