pixelbase's blog


posted by pixelbase, Dec 31, 2006 6:44 PM — 21 comments

This is especially handy if you have flattened an image, saved it, and later realize that you need to change something in a layer.

This only happens to me about every other day.

If this happens to you, here's the keyboard shortcut to save your day: Mac: Apple - Option - Z; PeeCee: Control - Alt - Z.

Press these keys a few times and you will see your layers magically reappear in your layers palette.

Very slick!

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1. posted by digital_a, Jan 3, 2007 10:53 AM

Well, this is the option of going one step back , just remember that the default settings of PS is 20 steps back (increase them to make sure that you can always go back in time)

2. posted by pixelbase, Jan 7, 2007 8:27 AM

Ahmed, this tip is all about going "back in time".

However, this is not your typical "Undo" command (apple - z, or control - z), or going back in history, using the history palette (which is what I think you mean by the "20 steps back"), things that you can do all the way up until you save your doc.

After you save your doc, you can't use the "undo" commands (or make changes using the history palette).

However, any time AFTER you save your doc, you can use my tip to save your "donkey" should you decide to change your brain (or mind), afterwards.

3. posted by CTG-MarCom, Jan 9, 2007 4:51 PM

Personally, I change my "Step backward" keystroke to Ctrl/CMD-Z (no Alt key). That way, instead of toggling the current and previous step, it behaves as I expect: it steps backward until I run out of history. It's more intuitive that way.

4. posted by nathanoj, Jan 10, 2007 9:01 AM

so long as you don't close the file you saved, i guess.

5. posted by pixelbase, Jan 11, 2007 4:47 AM

Jonathan, you guessed right! (And the crowd goes wild!)

6. posted by elmota, Jan 14, 2007 8:27 PM

oh boy, what a waste of my time! this is just a typical "undo" as Microsoft defines it! and you can always undo, even after you save the file...
On the other hand, what REALLY could be a day save is "REVERT." If you want to undo sooo many actions you can always revert to the last saved state regardless of how many actions down history (more than 100s) but watchout, once you revert, you cannot step forward! eh, LIFE

7. posted by pixelbase, Jan 19, 2007 11:28 AM

Sorry, Mariam, this is not "just a typical undo". A typical "undo" would be control > z (or command > z), which you can use all the way up until the time you save your file.

This "tute" (the urban dictionary defines "tute" as a slang word used by students at the Oxford University for "tutorial") is for anyone who does not know how to "undo" a change after they have saved a file in PS CS2, which is a different (and, in my opinion, not a typical undo) keyboard shortcut.

If you consider this "tute" to be a "waste" of your time, I have to assume that you already know how to undo a change after you have saved your file, because if you don't, a waste of time would be any time spent recreating a doc because you don't know how to undo a change AFTER you have saved it.

Yes, you can "always undo, even after you save the file", but not everyone knows how to do this in PS CS2. This "tute" is for people that don't already know how to do this in PS CS2.

PS CS2 is an "Adobe" product, so I'm not entirely sure why you are using "Microsoft" to define a PS CS2 undo, or what you mean by "Microsoft's" definition of undo.

A dictionary definition is, "the reverse effect of a computer command: "to cancel the effect of the last command or action done on a computer, restoring the material being worked on to its previous condition".

This definition does not say anything about undoing any commands after you have saved the file.

Yes, another useful tool is "Revert" (Choose File > Revert), which reverts to the last saved version. Revert is added as a history state in the History palette and can be undone, however, I this is not the same thing as undoing after a save (which is what this "tute" is about).

8. posted by theshade76, Jan 22, 2007 8:43 AM

It is a regular command that Ctrl+Z for single Undo and Ctrl+Alt+Z for Multiple Undo (Depending on number of Undos defined in preferences).

Now excuse me pixelbase...Do you know what does your tutorial heading mean?

9. posted by josecarli, Jan 24, 2007 3:40 AM

Half an hour ago I did it: saved the final version on the original photo...

Way past the 20s steps limit.

Just went to to the original image (first step) , which is always available, and saved it under a new name.

10. posted by kayceeus, Feb 9, 2007 10:51 PM

Do you mean to tell me you can save and close a photo, open it back up and STILL get your layers back? I love you!!!

11. posted by JustTeej, Feb 14, 2007 12:13 AM

I wanted to test this to see exactly what it did since there seem to be a lot of people missing the extra key you hit when you do it (compared to a "regular undo").

First, I tried a ps doc that I had saved and closed. Nothing happened, when I tried the command. No real surprise there, but that sucks for those who understood the tut that way.

Then, I tried a ps doc that I had saved and not closed. Not a lot different from a regular undo.

The good that came out of this: I actually bothered with the preferences and know that I'm not limited to 20 states in my history.

12. posted by joedore, Feb 16, 2007 9:06 PM

Geez. I already know that. It's a simple "multiple undo." gawd. thanks for this post anyway--at;east it helped for those who doesn't know hot to dosuch.o

13. posted by tsivertsen, Apr 3, 2007 6:23 PM

oh god, dont go on, just use it and dont argue about the meaning of life. it is a way to fix errors thats all.

14. posted by Noelle12, Mar 8, 2012 2:10 PM

It helped me!!! thanks!

15. posted by Obs, Jan 31, 2008 6:03 PM

This isnt what the title advertises.

Ctrl + Z = undo once, hit it again and it will redo what you undid!

Ctrl + Alt + Z = Keeps undoing steps.

F12 = Goes back to last saved state.

16. posted by mariocuadr, Jul 11, 2008 7:01 PM

mooo!! is what i have to say and thank you for helping those that did not know about it.

17. posted by galeleo, Dec 27, 2008 3:26 AM

What a bunch of rude people. He's only trying to inform those who don't know. Sheesh! Glad you don't live around me.

18. posted by hemsys007, Dec 21, 2009 5:09 AM

You ...........

19. posted by frgraphix, Nov 2, 2009 4:40 AM

everybody knows it, if u really wanna impress people then give them the solution of this "save the doc, close it, open it again, and now undo it". this is something very important and amazing for everybody. if anybody needs this, show your interest. Come on...

20. posted by trainer2, May 31, 2013 9:17 AM

That was easy solution, thanx

21. posted by carlislekm, Jul 29, 2013 4:44 AM

Very interesting

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