New Image Size and Resolution in CC

[NunoMCastro]

Hi there.

Ok, maybe i'm missing something, but how do i reduce the ppi's of a given image in the Photoshop CC? Changing it in the image size, in the Resolution field, it acomplish nothing. It logs an entry in the History panel, but nothing changes in the picture. Did Adobe changed how this works, or it's just a bug?

Thank you.

[charles badland]

Instead of a re-install, I would trash your PS preferences.

And since your movie depicted expected behavior, you may want to post one with W and D set to inches to help others trouble-shoot or recreate the behavior (bug?) you are seeing.

[NunoMCastro]

To late to trash the preferences...

It's almost finishing the download anyway. I'll post feedback in a bit.

[NunoMCastro]

Aha!! It's working now! yay!!!

Now that i'm thinking of it I had a few plugins installed, i don't know if it had something to do with the Size window being ineffective in the document.

Thanks a lot for all the help guys.

[Damir_Frkovic]

i have the same issue...  changing dpi from 300 to 72 doesnt change the pixel size at all...

ie.  going from a 5000x3000 pixel image at 300 ppi to 72 dpi would scale the image down to 1200x720pixels.

how did you solve this problem???

[charles badland]

In the Image Size Dialog, if Resample is checked, the pixel dimensions will change if you change the PPI.  If left unchecked, then all that happens when you change he PPI is you will see a change in the print size.

PPI ("DPI" is an incorrect term here) is only a bit of metadata associated with an image file. It has no real meaning by itself.

[NunoMCastro]

Damir, i just deleted everything, plugins included, re-installed and it started to work....

But, as others said, you have to choose a resample method and set it to cm's or some measurement like that.

[graphicsbenm]

The same thing is happening to me. I upsample with no change in file size. It acts as if I do no have resample checked. I hate to have to trash and re-install. it's a bug. Pure and simple.

[babawich]

This is also happening to me in CC. Reset preferences.. still not working. No time to reinstall today.. will try that if I must but can someone please fix this bug?

[Folobo]

Try setting to real-world measurement, like inches or cm.

Hi Charles, i think that change in cm/mm/in it's the only way to change the image ppi (in my case save/resample it to 108ppi). Can you confirm that this is correct?

Anyway when i go to image size (new panel of CC) the w/h are:

1) grey and always set in pixel with resample flagged.

2) always set in inches with resample NON-flagged (also if my ruler unit is in Pixel).

(and actually that is not new behavior. CS6 behaved same way when width and height were set to percent)

In CS6 and CC i never seen w/h in percent  - where is my error?

Many thanks!

[MattySezz]

Im sorry but this does not answer the question for someone who's original guidelines are in pixels as a unit.

There should not be the need to do extensive math and convert mismatching units just to make an image a certain pixel width when designing for web. My immediate fix for this is to create a new document at exactly the size you want and then fit your old image to the new document size. That way you're not doing crazy division and getting nutty decimals for how many 'inches' or 'percentages' you're trying to change to.

[ssprengel]

You can resize to precise pixels dimensions easily enough in CC and previous versions of PS.

If you can clearly state your issue, including a screenshot of the Image Size panel, and the pixel dimensions you want to resize to then someone can tell you what Image Size panel options to change to what to accomplish what you're after.

[MattySezz]

Even when I have RESAMPLE checked, and my ruler units are in PX.

[ssprengel]

Can you show the entire Image Resize panel and the Layers palette and the title bar of the document?  The options are as if Resample is not checked, but perhaps there is another reason.  If the problem is that the Resample checkbox is not being taken into account, ok that could be a bug, but from what you've shown it's not obvious that's not the problem and without seeing the rest of the workspace there isn't any other clue visible, either.

If the resample checkbox is checked but the Pixels doesn't become available, then, starting with a new document, what are the steps I can go through to reproduce the problem?

Or if most of the time it works, but for this document it doesn't, can you share this document by uploading to www.dropbox.com and post a public share link, here?

[ssprengel]

Also, an answer on the first page of replies says they had to set their Prefs / Rulers & Units / Units / Rulers = Inches.

I don't see that it makes a difference for me, but perhaps something is munged in their Preferences and changing the Rulers preference from Pixels to Inches fixed it.

[Pen&Paper]

I'm having the same issue. I've worked with photoshop since version 3 and I'm vary familiar with the image size dialog. This is a bug with photoshop cc and it's very frustrating.

[Alex R Lee]

I'm going to chime in as well. I'm having the same problem. I've also been using Photoshop since v3.0 and to me this is quite simply a bug in CC. I've tried specifying pixels, centermeters, resample is checked on and I've even specified the method for resizing pixels (Bicubic etc.).

I want to teach basic principles of how resolution affects images and their quality when printed. I can't even do that with Photoshop CC. Even if trashing prefs or reinstalling is an option, I don't have control over that in the Mac lab.

Fix it Adobe. This is lame.

[Alex R Lee]

Hmmm...I tried again after restarting Photoshop CC and set centermeters as the unit of measurement.

I'm actually using a 1-bit Bitmap image here, anyway, specifying nearest neighbour as the method for scaling and ensuring resampling IS turned on, the dimensions above (using pixels as their unit of measurment) now shows up as smaller, as I'm down scaling the image from 1200ppi to 300ppi. Hooray.

But this is still a bug, surely? It should be irrelevant as to what unit of measurment the width and height are set to if all you're doing is changing the resolution in PPI? I belive this still needs to be fixed, please Adobe.

- Alex

[cactuseskimo]

Not to sound smug, but I think you guys are not quite understanding how the image size works. Remember, pixels = screen size, and size/inches = print size. One can change without the other changing. How? By changing the resolution.

There are 3 parts to the image size equation: pixels - resolution - size (inches we'll say). Resolution is always the link between pixels and size.

If you have the measurement set to pixels, changing resolution will affect the size/inches (if you wanted the pixels to be changed, you'd simply just change the pixels, right?). Try it: Open up the image size box, and make sure your measurement is pixels, now switch to inches JUST to see what it is. Switch back to pixels and change the resolution - nothing happened right? Wrong. Go back to inches. They changed, didn't they?

Try the reverse. If you have the measurement set to a size (inches), changing the resolution will change the pixels. Why? Well same as above, PS assumes that if you wanted to change the size/inches when you're on that setting already, that you'd simply just change it. So, PS "preserves" the value of whatever measurement you have selected (inches), but changes the correspondng one (pixels) when you change the resolution AND vice versa.

Here's how to think of it in a real world example:

I have an image that I want to print. It's 500 pixels at 100ppi meaning 5" in diameter (500 pixels divide by 100 ppi = 5"). Well, I'm kind of concerned about the print quality I'll get at 100 ppi. So, I go into my image size box, and make sure it's set to pixels. Now, I don't want to change the pixels (resampling) because that could grunge up my image, so I change the resolution to 300 ppi and PS makes sure my pixel dimension stay at 500 pixels. BUT, to compensate and make the pixels-resolution-size math equation stay true, I'll find that my inches got changed to 1.6". So, yes I got my 500 pixel 300 ppi/dpi high qualiity image, but had to downsize to a 1.6" print to get it.

Now, kind of an opposite (but slightly stupid) example. Let's say I have a 500 pixel, 300 ppi, 1.6 " image, and I want to make it bigger for my website (1000 pixels lets say), BUT, I don't want to change the inches of the image because I'm going to print it later and want it to remain 1.6" (yes, I know, normally you would just save an additional copy). So, I open up my image size box, make sure inches is selected, and then change the resolution to 600 ppi. Well, PS won't change the inches (because if I wanted to do that, than I just would have done that), but it WILL change my pixels to 1000 pixels so that ole' pixlels-resolution-size/inches equation works out (and keep the image size at 1.6").

In summary, think of changing resolution as a way to change either pixels, OR size/inches, while leaving the other one un-changed. IF you leave the resolution the same, but change the size/inches, than pixels HAS to change to keep the math equation true, and vice versa.

Make sense?

[Damir_Frkovic]

I concur. 

None the less, the new dialog and resize paradigm is enormously confusing to a lot of users who are used to the older method.  I would love to see Adobe implement an option to switch back to the "calssic" resize dialog, just like they do for some other tools that they've changed and updated.  This would be a simple thing to do and it would make a lot of people happy.

Are you listening Adobe?

[paulgrfx]

What you are describing works if your rulers in your preferences are set to anything but pixels. This is wonderful if you don't work on websites in a 72dpi environment all day long like I do.

If I take a screenshot with my retina screen the resolution is 144 pixels with a width of 3360 pixels and a height of 2100 pixels. In all previous version of Photoshop if you simply changed the pixels to 72 under image size the width would adjust to 1680 pixels and the height would adjust to 1050 pixels. This no longer happens as of Photoshop CC.

How do you keep your rulers set to pixels in preferences and acheive the results I used to rely on?

Please go for ultimate smuggness if you have the proper answer 🙂

[cactuseskimo]

I am out of smugness for the time being.

[Semaphoric]

With my Rulers set to pixels, this worked fine for me:

[paulgrfx]

Thank you Semaphoric that did the trick!!!

With my prefrence rulers set to pixels all I had to do was change my width/height to inches before I adjusted my pixels and it worked. You have saved me much frustration and time.

[Semaphoric]

You're welcome. I must say that I found the new dialog quite off-putting, too. But, once you grok the correspondence between the two, you can see how the new features add power:

[RickyD55]

Whatever the thinking behind it its still super annoyiong. To my mind if you change the Dpi it should change the size of the image as there are less pixels per inch and there fore less pixels.

I wish they'd bring back this functionality its a complete pain in the ass.