lepr
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Posts posted by lepr
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1 hour ago, Sheila Finch said:
ended up using the Mac-installed app: PREVIEW
To emulate Preview resizing in Affinity Photo:
- open an image file in Affinity Photo
- document convert format to RGB/32
- document resize with 'Lanczos 3 (separable)' resampling
- document convert format back to original (for example, RGB/16 or RGB/8)
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File > New From Clipboard
Edit: that's Affinity on macOS
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7 hours ago, Sid J said:
Document setup is only available in the Designer persona (file menu or the shortcut shift + command + P) on Mac OSX (14 in my case).
If you are using pixel or export - nothing.
Same on macOS 12.7
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3 hours ago, FranciscoRiojas said:
GarryP - the viewer it opens with is microsoft edge...but its not the viewer...v_kyr - i opened the svg file with Affinity Designer and it shows the white background...(see attached - the preview in the export settings shows the white background) DanC - attached is the .afdesign file....thanks for responding everyone 🙏
Francisco
maizanosHalloweenA.afdesign 14.51 MB · 2 downloads maiz7.svg 5.57 MB · 2 downloads
Much of the design is being rasterised with a white background because the two Warp Groups have Erase blend mode. Erase blend mode is not supported by export formats, so rasterisation is required to maintain the appearance of the design.
Now you know that, you probably realise a solution is clipping or vector masking, but ask for help if you get stuck.
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14 hours ago, 80sTherapy said:
I now want to widen the path of the symbol. I tried to achieve this by just adding a stroke, but that also rounds the ends of the halves, which I don't want.
Is there a way to either make those angles sharp again, or better yet a way to widen the object without adding a stroke?
A simple solution is to ctrl-click with Node Tool to delete the path segments that lie across the ends of the 'S' shapes, as shown in the video below.
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1 hour ago, Return said:
Yes, I found that earlier, but different pages feature the image with different saturation levels, and so it would be best if we had the OP's file.
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2 hours ago, Vinterstille said:
The differences is even more vivid in real life than when importing this picture to this forum.
The forum software messes with uploaded image files before displaying them, so pease zip up your iStock sample image file and screenshot then attach the zip file in a new comment.
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1 hour ago, Return said:
Really?
Absolutely yes.
Your screenshot shows Affinity displaying the iStock image file correctly on your machine.
I was talking about the OP's attachments (screenshot and image file) in a correctly colour managed browser and when I open the attachments in other colour managed software on my Mac. These attachments show the image being displayed wrongly in Affinity on the OP's machine for some reason.
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24 minutes ago, Return said:
Perhaps this has something to do with it.
In the screenshot, the Adobe display is the one that matches the image file. It's the Affinity display that looks wrong.
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11 hours ago, rfed10 said:
join together magnetically
An extremely valuable tool in Designer is Point Transform Tool. (As with all tools, look at the hint line at bottom of window for keyboard modifiers.)
The video below shows a shape being snapped to another shape, but it also works with Curve and Curves objects.
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Set red value to 0 where red value is less than r (8-bit integer):
R = stepn(R, (r - 1) / 255) * R
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1 hour ago, NotMyFault said:
Nitpicking: Affinity is always resampling, even at 100% zoom. If all layers within document have same DPI as document (and no filters are involved and some other restrictions), you cannot spot a difference to „no resampling was used“. In case you have a layer with dpi deviating from document dpi, or the layer is misplaced to fractional pixels, or rotated or skewed, you will see the impact of resampling.
OK, I was talking about the case of a flat raster image simply opened in Preview and Affinity. Such as that TIFF supplied by the OP.
1 hour ago, NotMyFault said:This is great information, do you have sources? I would like to check this with a test image. RGB/32 vs. RGB/8 should make a visible difference.
I have no official source and go by empirical evidence. Experiments are easily designed and carried out.
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Colour differences when resampling 8 bpc or 16 bpc image in Preview versus Affinity:
Preview uses a linear colour space for resampling to the display resolution or export resolution, whereas Affinity uses the gamma-encoded space of the image.
When Affinity is at full scale (100% zoom) and Preview is at full scale (100% on a 'standard' resolution display, or 50% on a Retina display), they are not resampling to the display resolution and they look identical.
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11 minutes ago, R C-R said:
so I doubt this would be useful.
Doesn't surprise me at all.
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2 minutes ago, thomaso said:
Thank you for the hint with the visual update after close+reopen. (this makes it more suspect what in fact / exactly is happening with the "Assign Profile" option in Preview.)
You're welcome:)
In my opinion, Preview does profile assignment correctly except for the significant failure to display the change in appearance during the editing session.
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8 minutes ago, thomaso said:
Same to me. It is related to QuickTime (creating screencast videos of large size + data rate) and thus to our available online bandwidth. If I download it first it plays smoothly. Should I need to download to watch a forums video?
That's why I recommended to recompress it with VLC before upload. (here: 236 MB | 64 MBit/s -> 34 MB | 9.4 MBit/s)
Same here.
Maybe the forum software could be updated to automatically convert MOV uploads to MP4 with H.264.
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1 minute ago, R C-R said:
Probably of little or no relevance here but on Preview version 11 on my iMac running Catalina, the only place I see profiles mentioned is in the View menu in a submenu named Soft Proof with Profile. It doesn't matter which one I choose; when I close the file there is no Revert option, nor any indication that the file has been altered in any way. It just closes.
There won't be an option to Revert if nothing has changed. Soft proofing is just a view in the app, not a change to the document. Actually assigning a profile is a change.
Tools > Assign Profile...
It's just going to confuse you and lead to a nightmare of a thread, so maybe better to leave it alone.
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17 minutes ago, thomaso said:
"without saving" is a problem in Preview, it auto-saves permanently in the background.
When you close a file, there is an option to Revert which restores the file you had before editing it in Preview.
But I think I get your point. When I wrote "without saving the file", I should have written "without closing and accepting changes to the file".
Anyway, if Apple hadn't broken the live display of a profile assignment in Preview, this discussion wouldn't have been necessary.
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4 minutes ago, thomaso said:
If I then close + reopen the file + choose "Existing Profile" I don't get back to the initial profile.
Of course you don't if you close (and save) then re-open the file.
As I said, "it restores the open image's profile to the one in the file after you experiment with assigning others without saving the file. The bug I mentioned earlier - the failure of the effect of a profile assignment being made visible - can make all the profile assignment functionality confusing."
If Preview was correctly instantly displaying the effect of a profile assignment, you would clearly see the value of Existing Profile as a profile reset while a file is open.
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1 minute ago, thomaso said:
This menu option [Existing Profile] seems to have no function.
It does have a function; it restores the open image's profile to the one in the file after you experiment with assigning others without saving the file. The bug I mentioned earlier - the failure of the effect of a profile assignment being made visible - can make all the profile assignment functionality confusing.
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16 minutes ago, Hangman said:
That appears to be the issue here in that closing the image and re-opening it in Preview still shows ACES CG Linear under the heading of Existing Profile in Image which is clearly a Preview issue or bug since that is not what is shown when opening the image in Photo...
No you are still misunderstanding the dialog in Preview.
Existing Profile is not a heading; it is just the very first choice in the list. ACES CG Linear is just another choice - it happens to be the first in an alphabetical list of available profiles underneath Existing Profile.
If you want to see the name of the existing profile, press cmd+I for info about the image before assigning another profile.
cmd+I in Finder will also tell you the profile for many image file formats.
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32 minutes ago, NotMyFault said:
I think it works like convert, not assign in Photo. After changing the profile, the image look identical. This means that color values are converted based on old/new profile, and rendering stays same/similar.
No, Preview really does do assign, not convert. However, you need to save and close the file then re-open it to see the appearance change. Years ago, the assignment instantly became visible, but Apple broke that.
No FX blend mode?
in Affinity on Desktop Questions (macOS and Windows)
Posted
Only 3 out of 10 FX have no blend mode.
Please provide an example Affinity document with the problem so we can investigate and, hopefully, offer solutions.