Hello,

Sometimes I do paintings after a photo (as backround) and I had no such issues (regardless of the image quality) untill I downloaded new Krita alpha and beta versions.
When I start to draw or paint the brush makes pixalated strokes. I tried to use other brushes and to change brush settings but the issue
still occurs. Since I'm a new user, your help is much appreciated. Thank you in advance



A painting I did before with no such issues

The first image looks that way because it's an order of magnitude smaller than the second image. It's a bit hard to read, but it looks like you're working at 800% zoom, and yes, you'll see individual pixels then.

Look at the numbers at the bottom bar. In the first case, the canvas size is around 600x800, while the bottom image has canvas size that has 4 digits (I can't say exactly how big it is because of poor resolution of screenshots themselves). The resolution is too small; make a bigger canvas (in pixels) for your next image and it won't appear that pixelated.

many thanks for your replies.

@boudewijn i actually don't work at 800% zoom. it is zoomed larger for you to see, since i cannot share here in topic images larger than 720px. tymond is right regarding image size. the geisha drawing is after image size 600x800 and it is of poor quality. However, this didn't happen in the past when I was using Krita 4.1.7 . I'll try to make larger canvas at 300dpi and see if the issue continues or not.

DPI doesn't matter in purely digital art... make sure the size in *pixels* is big enough (it should be around 2-3k of pixels in every dimension for medium-size pieces, you can make it smaller later if you want - and if you experience lags in Krita, make the canvas smaller as well, just at least 1.5k in every dimension is important to have).

Also Krita 4.1.7 allowed for all canvas sizes just like the new one does. Maybe it chose a wrong template for you - you can still change it when you make a new document.

@tymond o.k. thank you. i've noticed that the CGA was not activated in alpha & beta 4.2. was this probably causing the pixels?

What was causing the pixels is that your image has so few of them (because the width and height are so low) that you're working very zoomed in. That's the only reason. Nothing else.

@boudewijn i was not working very zoomed in but at 100%. the clown image is also of small resolution 634x724 px at 100kb. it hasn't caused any pixels when drawing.

elvirak wrote:@boudewijn i was not working very zoomed in but at 100%. the clown image is also of small resolution 634x724 px at 100kb. it hasn't caused any pixels when drawing.

Your image is 634x724 pixels. That is why you see pixels. If you fiddle the pixels-per-inch setting, you can indeed work at 100% and Krita will faithfully paint pixels an inch wide and high.

the clown image has not left any pixels when drawing. thanks for understanding

elvirak wrote:@boudewijn i was not working very zoomed in but at 100%. the clown image is also of small resolution 634x724 px at 100kb. it hasn't caused any pixels when drawing.

Just a haunch: You are at 100% in WHICH scaling mode?

There are two, and in one it uses the DPI value and your screen size to show you how big it would be if you printed it with that DPI. Make sure you are not in that mode. The button next to the slider needs to be enabled for true 100% where 1 image pixel = 1 screen pixel.

elvirak wrote:the clown image has not left any pixels when drawing. thanks for understanding

The clown image is ten times as wide and ten times as high.

Maybe let's start with what a pixel is. A pixel is a square area that shows one color. The size of that area is determined by:

* how many pixels you have asked Krita to show per inch
* the zoom level
* the resolution of your screen (which krita compensates for by checking how many inches your screen has)
* the scaling factor for the display set by the operating system

Then we calculate how many pixels per inch your screen has, the current zoom level and how many pixels per inch you've set for your image, and draw the image. All image applications do this.

You're showing two images with completely different dimensions filling your entire screen in a maximized Krita window. The first image has very few pixels, the second image very many. So, Krita draws very big pixels for the first image (because otherwise the image will not fill the window) and very small pixels for the second image (because otherwise the image be bigger than the window).

Go to image/image properties and note the resolution and ppi/dpi for both images. Compare those, and you will understand the effect you're seeing.

thanks, i know what pixels are. i have compared the image quality already. please note that i didn't have any such issues when using krita 4.1.7.
my screen is 15" and here is an example of it

http://i68.tinypic.com/2ltmxjd.jpg

here is a drawing that i did with 4.1.7. have used a screen shot from a video file. no issues when drawing

http://i63.tinypic.com/34959o9.jpg

elvirak wrote:http://i68.tinypic.com/2ltmxjd.jpg

That image is NOT zoomed in. Of course you cannot see pixels. Your first pixelated example on the other hand is clearly zoomed in.

Try this:
- Open the geisha image in latest Krita
- Check the button next to zoom slider: If disabled, enable it. If enabled, disable and re-enable.
- Screenshot it now, and upload the screenshot without compression.

hi storm,

i can see pixels also at low zoom. what i'm trying to say is that the brush would not "copy" those pixels when drawing in 4.1.7 but it does so in new alpha & beta version.
when drawing over the image, the brush no longer has its smooth, soft line. it starts to draw in pixels.

i use also corel painter essentials with same image of geisha and i had no problems when drawing. the brush and the paint would not "copy" image pixels on the layers for outlines & coloring