NotMyFault

I appreciate your effort trying to find workarounds, but the complexity and fragility only emphasize the need for a real solution (far easier, less fragile, file format compatibility with PS) And we ask for the combination of groups and clipping, not masking. Both are similar but there are relevant differences.

Most important: deselect all. And active selection is the top reason.

Please search the forum for older post with topic “brush not working”. you need to check all brush parameters like: brush color color opacity layer opacity wet edges which brush you are using. Select a fresh basic round brush to start with blend mode of brush are you using the brush tool or by accident color replacement brush tool or undo brush tool? channels panel, all channels active? try solo mode to see what is happening more directly Add a new pixel layer to check if the brush is working there and some more to check if the steps above do not help.

Please add the option to start the grid from the center of the document instead of upper left corner. E.G. For Triangular Grid i found no way to set the grid accordingly. It is essential to create symmetric hexagonal tiles for repeated complex patterns including e.g. mirroring and rotation of tiles. You need a starting point zero in the center. In principle, th grid should simply follow the point of origin in rulers. The workaround mentioned below does not work on iPad.

There is one important detail in between these steps: If you drag sliders, and still hold the mouse button without releasing, space has no effect. Mouse movements will adjust slider settings. If I release the mouse buttons, then press space, I can pan the canvas. Can you please check again, and provide a screen recording for 2.4.1 similar to 2.3.1?

I just tested 2.4.0 (before update) and it allows to pan around even in case of an open filter layer UI. As 2.4.0 introduced the new space keyboard modifier to the move tool (toggle lock children) I checked this, too and it works. But you must always start dragging in the canvas (not pressing space key first!), then press space key.

The issue is that the info panel does not convert LAB to RGB colors "corretcly" and used different rendering intend and or color profiles that used in Document->Convert and Color Panel. You will spot deviating color information in info panel vs. color panal even inside one document of the same color format (except the simplistic case RBB/ sRGB) As Ldina has shown, every color format conversion has a bunch of parameters (rendering intend) and only when converting a document you can choose the parameter. When using Info panel or color panel, undocumented default rendering intend is used. Another factor to play in is RGB color profile. As far as i remember, Affinity use the profiles defined in assistant for some of the conversions, andmay use undocumented defaults for others.

I cannot reproduce any cyan tint when using curves adjustment. You must use numeric input for the nodes. If using mouse, the numeric values are rounded for UI and you may create the node at a slightly off position. a better way is channel mixer, and enter 0% La/Lb plus 50% offset. This gives exact values.

There are better methods to desaturate an image than using a lab curves adjustment in non-lab documents. Curves in LAB mode require double conversion, depending on blend mode 4 conversions. Minor issues can stack up. It starts with the encoding of lab colors in 16 bit integers does not allow to represent 0.5 La Lb values exactly. It is off by 1/2 least significant bit.

The “backupstore” is always located in you user profile, unrelated where the App itself is installed.

Did you miss the most important steps of the workflow? Don't use Head offset or Tail Offset. Or just open my file and export the rectangular brush area as PNG (export selection, not whole document). It works equally on iPad and Desktop.

No, the color panel and color picker of the gradient tool is 100% isolated and does not interact with the normal color panels. As soon as you try to use the other panels, the UI closes. Screen Recording 2024-04-05 at 15.43.48.mov

There is only one color picker which works: open the gradient map, then click on the rectangular color patch right to „Color:“. A color chooser pops up, with its own color picker. Use only this one. The other color pickers from tools or color panel do not work for gradient map.

In export, you can choose „convert images color spaces“. It is off by default even for press ready preset.

Don’t understand what you try to say. Is the issue still unsolved? If yes you and those people trying to help need to invest more time. From your side we need a screen recording showing the exact steps you do, and screenshots of the relevant settings (e.g. permissions for Affinity app to record screen). Affinity has at least 3 different color pickers and it is not clear which one you try to use.

Thanks @lacerto. The main topics of my question were: Do the 4 arithmetic blend modes work natively in CMYK, or is there a temporary transformation to e.g. RGB or HCL color format (like in BM HUE, COLOR)? Answer: they work natively in CMYK. Meaning every color channel is calculated individually, like in RGB Is it possible to use BM subtract/difference in CMYK in a similar way as in RGB to visualize differences between layer content ? Answer: Only restricted. You need to use channels panel to focus on one single color channel, otherwise the K channel will render everything black. Another hurdle is that channels panel misses a feature to automatically invert color channels (selectable as toggle), otherwise the brightness is always inverted when switching from all channels to individual channels. I will continue trying to find a way representing small differences between layers in CMYK in a more practical way.

Works for me. You may need do adjust your workflow: use symbols to create 3 instances of the tile to allowing to get perfect transition on both sides use a enclosing rectangle to cut out the perfect master do this in the first step (creating the PNG), not in the later step of importing the brush, for better results greek brush.afdesign

Everything is a compromise. Large brushes have a performance impact relative to the areal size of the brush image. Make a wise choice of brush size. Offer multiple sizes if relevant, e.g. 360px up to 8x 360px.

works for me without issues. MacOs 14.2.1 Photo 2.4.0 If you have colors within the swatch panel already registered, don't use the color pickler. Instead, change the mode to "swatch" and directly choose the swatch. But even then, the color picker just works (plus click the sampled color to activate it)

To summarise my findings: A fresh pixel layer does not allow to paint outside canvase several conditions trigger extending in top-right direction (relative to layer original orientation), like moving layer to partially fit outside canvas, or rotating layer Some conditions trigger unlimited layer extension in any direction if you rasterise and trim layer, it gets back to state 1 But even if auto-extension is active, it is totally inconsistent. e.g. some parts on the edge get cur off anyways. This should be sorted out, e.g. by having a settings which either disables layer extension, or enables layer extension (but then consistently in any direction). Could be combined with layer lock (against unwanted editing of content) L1: layer editable, with auto-extension beyond canvas L2: layer editable, but limited to canvas bounds (even if rotated or sheared) L3: layer locked / protected against editing

yes, I know. This makes it even more important to know if and when such content is created. But I can use linked layers and place a copy in reduced size inside the canvas area. Unfortunately this again impacts the behaviour wrt out of canvas painting.

To add: i try to avoid unclip canvas as it can lead to fractional pixel positions (depending on other layers in document)

You are stopped in certain undocumented circumstances. And while you are painting you have no way to know. unclip canvas is not even required, just activate move tool and it shows if layer extends beyond canvas.

That does not really help. this post is about (intentionally or accidentally) painting outside the visible canvas, and what influences the behavior of Photo / Designer to allow or block. Unclip canvas can reveal parts laying outside the canvas after there were created, but does not help allowing them to be created. In some situations you need to rely on beeing allowed or beeing blocked, and currently it is almost random.

You can inspect and edit brush settings by clicking on the symbol in the tools line below the menu line. Affinity brushes are kind of templates. Whenever you start using a brush, you can modify the brush settings in any aspect and create a new brush. Affinity only shows the actual derived brush, not the brush name from the brush panel.