Bruce Atkinson Posted September 5, 2020 Share Posted September 5, 2020 I've been trying to better understand Pre- vs Output sharpening (as per Nik Collection RAW Presharpener / Output Sharpener) but using Affinity Photo. In the Develop Persona, Detail Refinement has both Radius and Amount as percents (0-100). On the other hand, in the Photo Persona, Radius is in pixels (0-100) and Factor ranges from 0-4. Two questions: 1) since Radius in both is 1-100 can I assume that e.g., 5% in DP is equivalent to 5 pixels in PP, and 2) can I assume that an Amount of e.g., 25% in DP is equivalent to a Factor of 1 (25% of 4) in PP? Quote Link to comment Share on other sites More sharing options...
PaulEC Posted September 5, 2020 Share Posted September 5, 2020 Where is Detail Refinement in Photo Persona? Or are you using another type of sharpening? Quote Acer XC-895 : Core i5-10400 Hexa-core 2.90 GHz : 32GB RAM : Intel UHD Graphics 630 : Windows 10 Home Affinity Publisher 2 : Affinity Photo 2 : Affinity Designer 2 : (latest release versions) on desktop and iPad Link to comment Share on other sites More sharing options...
lepr Posted September 5, 2020 Share Posted September 5, 2020 29 minutes ago, Bruce Atkinson said: I've been trying to better understand Pre- vs Output sharpening (as per Nik Collection RAW Presharpener / Output Sharpener) but using Affinity Photo. In the Develop Persona, Detail Refinement has both Radius and Amount as percents (0-100). On the other hand, in the Photo Persona, Radius is in pixels (0-100) and Factor ranges from 0-4. Two questions: 1) since Radius in both is 1-100 can I assume that e.g., 5% in DP is equivalent to 5 pixels in PP, and 2) can I assume that an Amount of e.g., 25% in DP is equivalent to a Factor of 1 (25% of 4) in PP? What is stopping you from testing whether A is equivalent to B? Quote Link to comment Share on other sites More sharing options...
David in Яuislip Posted September 5, 2020 Share Posted September 5, 2020 3 minutes ago, PaulEC said: Where is Detail Refinement in Photo Persona? Here Quote Microsoft Windows 11 Home, Intel i7-1360P 2.20 GHz, 32 GB RAM, 1TB SSD, Intel Iris Xe Affinity Photo - 24/05/20, Affinity Publisher - 06/12/20, KTM Superduke - 27/09/10 Link to comment Share on other sites More sharing options...
Bruce Atkinson Posted September 5, 2020 Author Share Posted September 5, 2020 5 minutes ago, PaulEC said: Where is Detail Refinement in Photo Persona? Or are you using another type of sharpening? Oops! I forgot to indicate Unsharp Mask in Photo Persona. Quote Link to comment Share on other sites More sharing options...
Bruce Atkinson Posted September 5, 2020 Author Share Posted September 5, 2020 5 minutes ago, anon2 said: What is stopping you from testing whether A is equivalent to B? I have tested but am unsure because of my eyesight Quote Link to comment Share on other sites More sharing options...
lepr Posted September 5, 2020 Share Posted September 5, 2020 Just now, Bruce Atkinson said: I have tested but am unsure because of my eyesight Sorry. No offence was intended. Quote Link to comment Share on other sites More sharing options...
PaulEC Posted September 5, 2020 Share Posted September 5, 2020 7 minutes ago, David in Яuislip said: Here Surely that's in the Develop Persona only, not in Photo Persona. That's the point of the question! Quote Acer XC-895 : Core i5-10400 Hexa-core 2.90 GHz : 32GB RAM : Intel UHD Graphics 630 : Windows 10 Home Affinity Publisher 2 : Affinity Photo 2 : Affinity Designer 2 : (latest release versions) on desktop and iPad Link to comment Share on other sites More sharing options...
PaulEC Posted September 5, 2020 Share Posted September 5, 2020 I think the thing is that Detail Refinement in the Develop Persona and Unsharp Mask in the Photo Persona aren't doing exactly the same thing, so the settings are different. (It would need someone with much more technical knowledge than me to say exactly what each tool is actually doing, although the results may look similar.) 😀 Develop Persona is intended for raw files (although I use it for all files) and Photo Persona for images that have been "developed". One thing, when comparing results of filters etc always check at 100% view as looking at it at a reduced size can be misleading. Quote Acer XC-895 : Core i5-10400 Hexa-core 2.90 GHz : 32GB RAM : Intel UHD Graphics 630 : Windows 10 Home Affinity Publisher 2 : Affinity Photo 2 : Affinity Designer 2 : (latest release versions) on desktop and iPad Link to comment Share on other sites More sharing options...
David in Яuislip Posted September 5, 2020 Share Posted September 5, 2020 47 minutes ago, PaulEC said: Surely that's in the Develop Persona only, not in Photo Persona. That's the point of the question! Quite right too, ignore me Quote Microsoft Windows 11 Home, Intel i7-1360P 2.20 GHz, 32 GB RAM, 1TB SSD, Intel Iris Xe Affinity Photo - 24/05/20, Affinity Publisher - 06/12/20, KTM Superduke - 27/09/10 Link to comment Share on other sites More sharing options...
lepr Posted September 5, 2020 Share Posted September 5, 2020 47 minutes ago, PaulEC said: I think the thing is that Detail Refinement in the Develop Persona and Unsharp Mask in the Photo Persona aren't doing exactly the same thing, so the settings are different. (Currently) Detail Refinement and Unsharp Mask are the same filter, except UM has an additional threshold control. Quote Link to comment Share on other sites More sharing options...
lepr Posted September 5, 2020 Share Posted September 5, 2020 2 hours ago, Bruce Atkinson said: I've been trying to better understand Pre- vs Output sharpening (as per Nik Collection RAW Presharpener / Output Sharpener) but using Affinity Photo. In the Develop Persona, Detail Refinement has both Radius and Amount as percents (0-100). On the other hand, in the Photo Persona, Radius is in pixels (0-100) and Factor ranges from 0-4. Two questions: 1) since Radius in both is 1-100 can I assume that e.g., 5% in DP is equivalent to 5 pixels in PP, and 2) can I assume that an Amount of e.g., 25% in DP is equivalent to a Factor of 1 (25% of 4) in PP? Detail Refinement in Develop Persona compared with Unsharp Mask (with Threshold 0%) in Photo Persona: DR Radius 100% is equivalent to UM Radius 5 px DR Amount 100% is equivalent to UM Factor 2 Quote Link to comment Share on other sites More sharing options...
Bruce Atkinson Posted September 5, 2020 Author Share Posted September 5, 2020 2 minutes ago, anon2 said: Detail Refinement in Develop Persona compared with Unsharp Mask in Photo Persona: DR Radius 100% is equivalent to UM Radius 5 px DR Amount 100% is equivalent to UM Factor 2 Thank you, this is most helpful!! (And BTW no offence taken) Quote Link to comment Share on other sites More sharing options...
j3rry Posted September 5, 2020 Share Posted September 5, 2020 1 hour ago, anon2 said: Detail Refinement in Develop Persona compared with Unsharp Mask (with Threshold 0%) in Photo Persona: DR Radius 100% is equivalent to UM Radius 5 px DR Amount 100% is equivalent to UM Factor 2 Is this the same in the Photo persona? Quote 24" iMAC Apple M1 chip, iPad 8, MACOS Sonoma & iPadOS, Affinity V2-Universallizenz Link to comment Share on other sites More sharing options...
Bruce Atkinson Posted September 5, 2020 Author Share Posted September 5, 2020 24 minutes ago, j3rry said: Is this the same in the Photo persona? Expanded, this is what it all means 100% Radius in Detail Refinement (DR) in the Develop Persona is the equivalent of 5 pixel Radius in Unsharp Mask (UM) in the Photo Persona 100% Amount in Detail Refinement (DR) in the Develop Persona is the equivalent of Factor of 2 in Unsharp Mask (UM) in the Photo Persona j3rry 1 Quote Link to comment Share on other sites More sharing options...
j3rry Posted September 5, 2020 Share Posted September 5, 2020 Thanks Bruce, I thought it was a comparison to the Unsharp mask filter in photoshop. Quote 24" iMAC Apple M1 chip, iPad 8, MACOS Sonoma & iPadOS, Affinity V2-Universallizenz Link to comment Share on other sites More sharing options...
lepr Posted September 5, 2020 Share Posted September 5, 2020 56 minutes ago, j3rry said: Thanks Bruce, I thought it was a comparison to the Unsharp mask filter in photoshop. I wrote the words Photo Persona, so I don't know where your confusion came from. Quote Link to comment Share on other sites More sharing options...
j3rry Posted September 5, 2020 Share Posted September 5, 2020 Sorry, I guess I didn't read it right or too cursory. Quote 24" iMAC Apple M1 chip, iPad 8, MACOS Sonoma & iPadOS, Affinity V2-Universallizenz Link to comment Share on other sites More sharing options...
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