Inspiring

Answered

Saving an altered adjustment level

Forum|Forum|4 years ago
August 25, 2021
4 replies
5055 views

Help. I occaisionally used the level adjustment to increase contrast in drawings. When saving, I am unable to maintain the altered contrast. As soon as I let go in order to save the changes, the image returns to unaltered state.

Windows

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Correct answer GeorgePutnam

You could give

Filter > Other > Minimum

a try.

Well that "filter/minimum/ pixel change worked, I presume by add pixels, not making them blacker.

See attached (I don't know how to place an image without requireing you to open it).

Thank you so much.

Meanwhile its obvious (nod to D Fosse) I need lessons.

c.pfaffenbichler

Community Expert

View > 100% is what matters.

If merging (or confirming an Adjustment destructively; edited) at that magnification does not result in a change of appearance your problem is most likely the cached display – lower resolution stand-ins used to speed up display of layered images.

Maybe these screenshots can help illustrate; the Adjustment Layer cannot have an effect if the image only contains black and white pixels but at 50% magnification it looks as if it does.

G

GeorgePutnamAuthor

Inspiring

I opened the file again, hit ctrl 1, and the image became large... see attached.

No contrast at all when trying to work with that large file.

Any other ideas?

Screen_100%_view_again_No_change_in_contrast-.pdf

G

GeorgePutnamAuthor

Inspiring

I adjusted using curves and it looked great, but again no saving. I'll go through what you all have said, and if I can.

IT sounds like you all know how to solve this, I just don't have the experiaence to push the correct buttons.

Screen_after_curve_change---_will_not_save.pdf

c.pfaffenbichler

Community Expert

Another issue: Are you applying the Adjustment destructively instead of using Adjustment Layers?

PECourtejoie

Community Expert

Hello, please explain where you are seeing this image without changes: within Photoshop itself? If outside, is it a color managed application?

G

GeorgePutnamAuthor

Inspiring

The changes are seen in Photoshop to the displayed window.

The altered contrast will not hold.

BTW, this does not happen all the time.

(I can't be sure if you two respondeants are getting the images I'm sending).

J

J453

Brainiac

You need to view at 100% to get an accurate adjustment preview. Make it a habit to always press ctrl+1 every time. It should be muscle memory.

100% has nothing to do with size. It means one image pixel is represented by exactly one screen pixel.

Adjustment previews are calculated on the basis of the on-screen image. At less than 100% zoom, that's a downsampled and softened image, containing a lot of intermediate values that aren't there in the original full data. So the adjustment appears to have an effect, but the preview is misleading. Unless you view at 100%, where you get a true representation.

When you commit the adjustment, it's performed on the full data, pixel for pixel.

It's done this way for performance reasons.

Great explanation @D Fosse!

c.pfaffenbichler

Community Expert

Could you please post screenshots taken at View > 100% with the pertinent Panels (Toolbar, Layers, Channels, Options Bar, …) visible from before and after?