DPI or PPI during cropping?

Is there a way to get a readout of the PPI or DPI in real time during cropping?
Regards,
David

"Set one of them that you prefer to either cropped dimensions or megapixels."
Yes, that shows the info I often need to see when cropping, but shouldn't there be something approaching instant feedback showing latest cropped dimensions (as in Photoshop)? On my Mac G4 1.47GHz (dual processor with 2 Gb RAM), LR seems to require approx 10 seconds before updating the info display to show current cropped dimensions. Is this typical? That's painfully slow feedback and makes cropping to a fixed pixel dimension a very tedious process.
Phil

Similar Messages

DPI vs PPI - a definitive answer?

I've looked back at some previous discussions of the DPI setting in Aperture, and I've also read some online explanations of DPI vs PPI. Apparently software applications sometimes confuse the two, and I suspect that this is the case with Aperture but I haven't seen this definitely specified. Photography competitions that ask for high-res files often ask that you use 300 PPI (not DPI); but previous discussions of Aperture suggest that the DPI option (there isn't a PPI option) should be set to 300 for high-res exports. In other words, Aperture seems to refer to DPI when it should be referring to PPI. Is this correct?

LondonDave wrote:
Photography competitions that ask for high-res files often ask that you use 300 PPI (not DPI); but previous discussions of Aperture suggest that the DPI option (there isn't a PPI option) should be set to 300 for high-res exports.
PPI and DPI are often incorrectly used interchangeably but most of the time the improper usage does not hurt anything. However IMO we should ourselves endeavor to use the terms properly. Aperture uses the dpi term correctly because it is referring to an output device.
Much of the time "photography competitions" are just stealing your image one way or another, so the image spec is just to get it into the form they want to harvest. <OK I am a cynic...>
When the contest spec is making sense usually it is just specifying linear size (inches or centimeters) x ppi (like 300 ppi) to achieve consistent linear pixel dimensions, which are what really matter. So if they want to harvest what would be typical 8x10 print quality image files they specify 8" x 10" at 300 ppi: the important net result is that every contestant provides a (8x300) x (10x300) = 2400 pixels x 3000 pixels file.
Or they could specify 24" x 30" at 100 ppi: net result (24x100) x (30x100) = 2400 pixels x 3000 pixels file.
Or maybe it is a size-righteous competition, in which size as viewed matters. After all, we all know some pix show well small while others demand large presentation. In that case they may only specify the ppi. The photog determines the presentation size. E.g. 300 ppi is specified and one wants to present at 4" x 4" it would be a 1200 pixels by 1200 pixels image submission.
-Allen

DPI and PPI in Aperture 'Export' and 'Print' windows

Hi,
As mentioned in an earlier post, I just bought an Epson 3880 printer and some Epson Hot Press paper, so now I have to pay attention to PPI (term used for displays) and DPI (term used for printers).
In Aperture however, files being exported require DPI specs(!), while files being printed require that we specify PPI specs. How is that?
Also, my Epson manual indicates that I can print at 5 distinct "DPI" settings, from 180 to 2880. My Aperture Print window, however, only offers 3 options with 360 "PPI" as the highest (considered Draft quality by Epson - if "DPI"), plus a 4th referred to as Custom.
Also, I have a note jotted down a while back that says: "1440 dpi for most papers with 240 dpi files, at 2880 if 360" - whatever that meant 6 months ago at an Epson 3880 seminar, before I got the printer.
Can you guys sort this out for me? Please?
Thanks a lot,
Raphael

I'm not at my studio. My current driver is 8.x. The newest driver is 9.33. My remarks here may not fit with your more current version of the driver (but that would surprise me — the printer came out about 4 years ago, iirc).
The profiles are not, afaik, included with the driver, at least when you download it from Epson's site.
There are two profiles for each Epson Fine Art paper — one at 1440 and one at 2880. You should try each with every kind of print you make, and determine which is better. IME, _for my needs_, 2880 was never worse. I use the 2880 profiles.
The profile is selected from the "Color Profile" drop-down at the top of the "Rendering" section of Aperture's "Print" dialog.
(Set "Render Intent" to "Perceptual" for, in general, photographs or anything with smoothly graduated changes in color. Set "Render Intent" to "Relative Colorimetric" for, in general, graphics or anything with smooth areas of constant color and sharp transitions between areas of color. Generally, if "Render Intent" is "Perceptual", check "Black Point Compensation"; otherwise uncheck it.)
Leave "Print Resolution" at "Auto". I know of no reason to ever change this. (I don't, in fact, know what this control does, and have never changed it.)
When you click "Print" in Aperture's "Print" dialog, a short dialog opens asking you if you want to save any changes you made to your Preset. I always save my changes. Prints often need to be immediately remade — all transitions of data from electronic to physical media are problematic — and I like to return to my Preset ready to print the same Image(s) again.
When that dialog closes, the OS print dialog opens. Your 3880 printer should already be selected in the "Printer" drop-down. You need to create and should save an OS Preset for your paper. Note that on the "Color Matching" page (this dialog has pages, not tabs; direct complaints to Cupertino), all (two) options should be grayed-out. This indicates that Aperture is handling color matching, which is what you want (for best prints and anything approaching a color-calibrated workflow). On the "Paper Handling" page, the "Destination Paper Size" drop-down is grayed-out, but should show you the selection you made in the Aperture Print dialog. The "Printer Settings" page has two tabs. On the "Basic" tab, in the "Media Type" drop-down, select your paper ("Fine Art Paper ▹ Hot Press [Bright or Natural])*. The "Ink" drop-down should be grayed-out, but show "Matte". Matte is proper selection for Hot Press [Bright or Natural]. This dialog knows this from your color profile selection in the Aperture Print dialog. Chose "16-bit" output and any other options your want (you can experiment; I find no difference). I ignore the warning about print quality at the bottom area — this has never been an issue. On the "Advanced" tab of the "Printer Settings" page, it should tell you that "Epson Driver Color Management is Off". That's what you want. You want Aperture to manage the color.
Save your OS print dialog Preset. Use it every time you print to the same paper.
*If you cannot select your paper, you have not selected the correct paper size in the "Printer" section of Aperture's Print dialog. Note that the "Paper Size" selection includes not only the paper size, but also whether the feed is by sheet-feeder or manual, and whether or not the print is borderless. (I didn't design this; I assume there are reasons to have shoe-horned these options into the "Paper Size" selection.
This is all tricky on top of being actually complex and next to being new. It takes everyone time and mistakes (read: ink and paper) to canalize a flow that works for producing the prints they want. I hope this gets you there a little faster. Report back with what doesn't work.
—Kirby.

DPI or PPI

Hello Adobe,
In Photoshop, under Image > Image Size, the resolution is labelled ppi, pixels per inch. This is correct.
In Bridge, with metadata showing, the label says dpi. This is not correct.
Could we fix this?
Mike Witherell in Washington DC

Thanks for you feedback. You wish has been granted. Check out the free beta of Bridge CS3 (http://labs.adobe.com/technologies/photoshopcs3/)
Cheers,
Arno.
Bridge Engineering Manager, Adobe.

CS6 Image Corrution During Cropping

The image went funny while in cropping selection mode then would work fine after hitting return to accept the selection and finish the crop. This happened on two different images.
This is in Windows 7 on an Asus GeForce GTX 560 Ti/PCIe/SSE2 running the Nvidia Beta drivers "301.24-desktop-win7-winvista-64bit-english-beta". The info is inserted below.
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Optional and third party plug-ins:
   3DxPhotoshop 2.2.0
Plug-ins that failed to load: NONE
Flash:
   Mini Bridge
   Kuler
Installed TWAIN devices: NONE

Did it work fine before changing drivers?
Did you try to troubleshoot GPU issues as mentioned here:
What features use the GPU and how do I troubleshoot GPU issues?
Pattie

Changing pixel aspect ratio during cropping (LR3.2)

When I crop sometimes the pixel aspect ratio changes here. I.e. the pic get stretched in horizontal or vertical way/or compressed. Any body seeing this also? After some time it does change to normal, but it makes cropping rather difficult when in a hurry.

I'm not sure I understand your problem, but I think what bothers you is the technique that has been in place in LR2 already for switching between landscape and potrait format of the crop, which in LR3 can be acomplished by the X keyboard shortcut.
Moving your mouse horizontally or vertically on a locked aspect ratio, the format will change from portrait to landscape or vice versa. To enlarge or diminish the size of the crop, you have to move the mouse diagonally.
Beat Gossweiler
Switzerland

IPhoto frequently freezes during cropping. Requires hard Mac reboot.Running OS X Yosemite ver 10.10.1. Nov. 10, 2014 update to OS X has not helped.

I have had problems with iPhoto stability since the OS X Yosemite upgrade. Now running ver. 10.10.1. iPhoto freezes totally and frequently when using the cropping tool. The freeze requires a full Mac reboot. The November 10, 2014 iPhoto update has not helped.

As a Test:
Hold down the option (or alt) key and launch iPhoto. From the resulting menu select 'Create Library'
Import a few pics into this new, blank library. Is the Problem repeated there?
Post back with the result.

Show pixel dimensions during crop

Good Morning,
I need to be able to see the pixel dimensions while I'm cropping. I clicked on the "Info" pallet and it shows this in inches, however, I didn't see how to change it to pixels. For some website work I need to set images to specific pixel sizes and yet be able to move around the image to crop where I need at these dimensions.
I also did a search here and in PS help - nothing found.
Thanks for your help,
Captain 1854

Set the Mouse co-ordinates to pixels in the drop-down menu in the Info palette.

Changing default PNG ppi during export

Can I edit my default export PNG to 300 ppi instead of 72 ppi?

No, and for two reasons:
1. Where did you find a PNG export setting? CS4 can export to JPEG
2. (More important) PNG supports a lot, but it's still a web-targeted format. It doesn't define a ppi setting.

Image cropped during printing!

Hello,
I have a tiff image that is 13 x 48 inches @ 300 dpi, that keeps getting cropped to 8 x 11 inches during printing. I do not understand what is happening.
I have an Epson Stylus Photo 1400 printer. I set my paper size in the "manage custom sizes" dialogue box, double and triple check all of my settings, previews and every maddening, minute detail, but it keeps cropping my images and I have wasted a plethora of ink and beautiful handmade paper.
I have done everything imaginable to try and remedy this problem. I have updated my printer driver, researched forums, spoke to support, had my friends look at my Photoshop settings, gone through every setting and tool and nothing is working.
I can't help but think it is something so painfully obvious and simple. Any ideas? Could it be my screen resolution, some obscure setting in Photoshop?
Thank-you for any ideas...

What is the size of your paper? What are the pixel dimensions of the file? How much RAM and how much available disk space do you have?
What exact version of Photoshop are you running, 12.0.2? What exact version of the OS, 10.6.7 ?
Have you downloaded and installed the latest version of the Epson driver for your printer?
Can you post a screen shot of what the print dialog box looks like in Photoshop?
Wo Tai Lao Le
我太老了

How do I change the Bridge settings in CS4 from displaying ppi to displaying dpi

I want to see the dpi, not ppi. Is it possible to change this, and if so, how?

Jamie Voetsch wrote:
> You [...] are just wasting my time in here.
When you consider learning a waste of time then it explains your lack of understanding.
Jamie further wrote:
> First of all it does make sense
> because CS2 displays DPI not PPI.
> I've switched back to CS2 because of this.
Maybe the label in the dialog box on the screen says 'dpi.' But the numbers displayed actually are ppi. There's a reason why they changed the label in later Photoshop versions. To stick with CS2
i for this reason only
is just plain foolish.
What you really want
i is
ppi anyway, not dpi. And exactly that's what you're getting---in CS2, CS3, and CS4 ... or any image-processing software.
Jamie further wrote:
> Being a stock illustrator and photographer, you have to submit
> images at 300 dpi so I have to see that setting, which CS2 does
> in Bridge you idiots.
The idiots are the stock agency managers asking for digital images submitted at 300 dpi. That's just plain impossible. And requiring submissions at 300 ppi does not make any sense either because that's just a meaningless number in the image file's metadata. Whether the ppi number in the metadata is 72, 240, or 300 will make
i absolutely no difference
to the actual image. Got it? Absolutely no difference at all.
Except it will make a clueless stock agency manager happy. So do enter '300' into the ppi metadata field; that sure is a lot easier than to educate a fool. But do not think that the 'DPI' vs 'PPI' labelling in Photoshop's or Bridge's user interface would make any difference. It doesn't.
-- Olaf

Dpi / ppi distiller

Hey
I have a postscriptfile from InDesign that I want to make into a PDF by opening it in distiller. It contains highresolution photos, vectors and text. Usually I export to PDFs with 300 ppi. Different sources claim that the plotter can plot the accuracy of respectively 200, 300 or, maximum, 600 ppi
My question is; wath dpi(not ppi) should I choose in distillers adope pdf settings?
300? 2400? neither of those?
I have tried to look dpi/ppi up myself, but the information is so contradicting.
I hope someone can help me!

Probably not Distiller Server. If not, I recommend the Acrobat Windows
forum (it's Acrobat Distiller, and comes with Acrobat). There are
several places where dpi/ppi is mentioned in the Distiller settings,
so when you post be sure to say which one you mean.
Aandi Inston

PPI VS. DPI in verbal printing discussion

Hi,
I was wondering If I could get a professional opinion on how DPI and PPI should be conversed with a print vendor?
This would include screen printing and offset printing.
Also, for years when I talk with a designer, I always asked to save as 300 DPI…not 300 PPI thats just the language I have been used to.
Can someone please give me an endepth explaniation of the two choices and which is more common to use.
Personally I think DPI is the more current to use.
Thanks…please advise,
JB

They are used interchangably (unfortunately) and if they ask for 300 DPI then you can be confident that they mean 300 PPI.
However, this doesn't make it correct: there are no "dots" in a digital image, never have been and never will be. There are only pixels. PPI is the correct unit of measurement, and that's only if you know the print size; the actual resolution of a digital image is the total number of pixels, for example 1500px by 850px -- until you determine the output size there is no PPI measurement. Of course you need to know the output size in order to give them 300 PPI; scanning an image @ 300 PPI and then enlarging it 200% in your layour will give you an effective resolution of 150 PPI.
DPI refers to output resolution of a device such as a printer, imagesetter, platesetter, etc. It does not refer to linescreen (that would be lines per inch, or LPI).
The best way to avoid confusion in any discussion is to use proper terminology (and teach and encourage others to do the same).

PPI or DPI?

When a printer says they need 150 DPI, is that the same as 150 PPI for my images in InDesign? And if not, how do I figure out the DPI?

DPI and PPI are not the same thing though most people use them interchangeably. I suspect that’s the case here.
Bob

When i cropped a picture using the crop tool to 9x6" when it was printed everyone was stretched looking tall and thiner how can i crop pictures but keep the people looking as they do in real life?

oops put the while question in the wrong place!!! but I'm at a loss on how to do this every picture I took everyone looks stretched when I use the crop tool any help would be much appreciated,
I have PS6
thank you

suzukidi wrote:
I have been trying so hard to try and get my head round this since your last comment so what I think I know is with my Nikon d80 having 3:2 aspect ratio pictures that I wanted printed can only be the sizes you mentioned above which is fine as the pictures I got printed were 9x6" but it's from now I'm still bit lost when I use the crop tool and pre set the size to 9x6" with a resolution of 240 and crop out all the bits I don't want it comes back from printers stretched so i'm still lost as I don't know the point where I'm doing something that causes the stretching? thank you for your patience
Lets separate this into topics Aspect Ratio, resolution and size ... etc
Aspect Ratio is just the ratio of an image's two sides. Your camera captures an image with a 3:2 Aspect Ratio. If you want to print the whole image your camera captures it can be printed and image size that has sides the have a 3:2 ratio without distorting the image.
Images are re-sized two ways:
One way is to keep the pixels your camera captures and print them at different resolutions. Resolution is nothing more then pixel size. Pixels have no size till there is a resolution set. Pixels themselves may have a aspect ratio themselves. These days most devices use square pixel. Some video standards use non square pixels. So if you have square pixels and an image with 1800px by 1200px and set the resolution to 300DPI the print size will be 6" by 4" if you set the to 200DPI the print size will be 9" by 6". Its simple math. 300DPI means pixels are 1/300"x1/300" there are 90,000px/inch 200DPI 1/200"x1/200" 40,000px/inch 100DPI 1/100"x1/100" 10,000. Note how quickly the pixel count climes as resolution increase doubling an image resolution requires four times as many pixels not two timas as many.
The other way is to create a new image using the pixels you camera captures. Your Camera pixels are resampled(interpolated) into a totally new image not a single camera captured pixel remains intact the new image has a different numbers of pixels it a different image. There are different interpolation methods some work better then others depending on image content and the direction of the re-size. Any time you resample an image you loose some image quality. The pixels are generated they are not captured using optics and a sensor.
Normally I do not resample when printing I just set the DPI so the image prints the size I want. In the Image size Dialog I un-check resample and the set the print width or height I want to print. Photoshop will calculate the DPI and set the other side size. If you crop without setting a DPI resolution in the crop tool the crop tool will not resample the crop to a particular DPI it should just set the appropriate DPI.
I resample image for the web Cameras capture more pixels then can be display by displays. So in the image size dialog I check resample and constrain the width and height to the image current aspect ratio then I set the number of pixels I want the width or height to be. Photoshop will calculate the number of pixels the other side will be. The DPI is meaningless for web images for Web images are displayed on screens at the resolution a displays has. Your images will display large on a large Low DPI resolution HDTV screen and small on a high resolution cell phone display.
If you want to print you image a size that does not have a 3:2 aspect ratio without distortion you need to crop you image to the aspect ratio you want to print at. You need to discard part of your image. The Crop Tool does not distort it discards part of you image. It may or may not resample the crop selected. I do not use the crop tool but if I did I would not use it to resample the crop I would not set in a DPI resolution in the crop tool.
Photoshop can also resize an image from one aspect ratio to and other aspect ratio a non constrained resize. The resulting image will be distorted. However Photoshop does have have a content aware re-size that tries to maintain recognizable objects perspective during the distortion process. This process can also be aided by user masking.
Cropping:
A 3:2 aspect ratio image can in theory be cropped to an infinite number of smaller images that have any aspect ratios including an infinite number of images that have a 3:2 aspect ratio. All crops can be resampled to a particular DPI resolution. However digital pixels can not be sliced up so there are a finite numbers of crops you can hack form a digital image

DPI or PPI during cropping?

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