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Hi, I'm rather new to Affinity Photoshop- I'm not amazingly experienced in Adobe Photoshop, but I'm way more familiar with that....

 

I recently began shooting color negative film and dislike the color correction in my scanners software and the Vuescan software and wanted to learn how to do it myself in photoshop. I found a tutorial online, however, I cannot figure out how to do the "Levels Clipping Mask," ...here is the tutorial: https://petapixel.com/2017/02/01/edit-color-film-negatives-photoshop/

 

Basically, I know from the Affinity help page that I can press the "alt" key when I'm adjusting the Black and White levels when I'm in specific colors such as red or blue, but it just turns my image either all black or all white, and I'm not sure how to make it actually work like it's supposed to? It seems to do the job when I do it on the Master for the RGB levels, but not any specific color? Am I doing something wrong? 

 

I hope this makes sense! Thanks!

 

-Jenny

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Hi Jenny,

 

welcome here … :)

 

Pretty interesting that this function is available in Affinity Photo … I never realized that. But unfortunately, it doesn’t seem to work here as well. So I would also be interested in how this is intended to work. I can only confirm the behavior described. As soon as I use the clipping preview with the single RGB channels, the image either turns completely black or completely white, and moving the slider has no effect.

 

Thanks, Alex

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Hi @jenpren,

 

Welcome to the forums. 

 

I managed to replicate the issue and I'm pretty sure this is not the normal behavior. I have logged it with our developers and we hope to get a fix in the future updates. 

 

In the meantime, you can turn the Scope on( View>Studio>Scope) and switch to RGB Parade. It would give you a bit more info about the clipped areas. It won't actually highlight the area, but you can at least get an idea where that clipped area. It's pretty easy to read a parade. The vertical scale will show you the intensity ( 0 bottom and 100 top), while the horizontal scale would be a representation of your image from left to right. If you have a look at my photo, you can see the spike in the middle of the Blue channel on the Parade, which represents the blue sky in the middle of the image, next to the sign. Hope this helps :)

 

Thanks,

Gabe

Capture.PNG

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Maybe try the HSL adjustment - Luminosity shift & saturation shift 

 

 

Petapixel_model_HSL.jpg


Affinity Photo  1.7.1.404 & 1.7.1.385 bèta

Windows 10 Home v 1809 (build 17763.437) - 64 bit processor - AMD A4-5000 APU with Radeon HD Graphics  1.50GHz - RAM 8,00 GB
Calibrated Monitor (Datacolor Spyder5 Pro)

 

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Yes, interesting feature. When I adjust levels + ALT, I see this. When I move black level to left, then the preview turns black, showing no clipping, correct? Is this the expected behavior? AP v1.6.4.104

Bob

Note - you must ALT + move the slider to trigger this mask view.

AP_levels01.jpg

Edited by OriginalBob
add note

Bob
Affinity Photo for Windows

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21 hours ago, jenpren said:

I recently began shooting color negative film and dislike the color correction in my scanners software and the Vuescan software and wanted to learn how to do it myself in photoshop

Interesting that Vuescan will not work for you. It works fine for me and my Nikon LS50 film scanner. What scanner are you using? It could be that you should try scanning in Vuescan, then polishing the scanned image in AP. Vuescan itself does offer a fair amount of image processing which would be worth investigating.

It would help if you could post some sample scanned images so we can see where the problem lies.

John


Windows 10, Affinity Photo 1.7 and Designer 1.7, (mainly Photo), now ex-Adobe CC

CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630

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@GabrielM  I see what you illustrate with the *.tif format file. Try it with the *.jpg format file! Or, copy & paste the illustration into AP. These work for me.

B


Bob
Affinity Photo for Windows

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22 hours ago, OriginalBob said:

@GabrielM  I see what you illustrate with the *.tif format file. Try it with the *.jpg format file! Or, copy & paste the illustration into AP. These work for me.

Is it possible that it's working for you because you're launching the Levels Adjustment Layer from one of the Levels Adjustment presets (I.E. Darken/Lighten) in the Adjustments Panel?  Does it still work OK for you if you add a Levels Adjustment Layer from Layer > New Adjustment Layer > Levels Adjustment?

The only way I am able to get levels to display clipping on the red channel is to add 0.4% to the 'Master' black level first (and 99.6% to the 'Master' white level).  If the 'Master' levels are set to 0%/100%, I get the same result as GabrielM.

 

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The only way I am able to get levels to display clipping on the red channel is to add 0.4% to the 'Master' black level first (and 99.6% to the 'Master' white level).  If the 'Master' levels are set to 0%/100%, I get the same as GabrielM.

 

I have seen this too. But I found the results are not reliable enough … :(

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