Resizing DPI

Here's the scenario:
I have this image that's 2162x3092 @ 72 dpi.
I'm going to be airbrushing the white parts of this image and I want the absolute highest quality. How should I go about doing this?
To help you answer this question, these are the ideas flowing through my mind:
Maybe I can downsize it to like 1000x1430 and compensate for this by knocking up the dpi setting at the same time? No idea what dpi setting to use though.
Maybe I can knock up the dpi to 300, but then what resolution would I put it at? Should it change at all? Is there a special formula to use here?
Now, I'm assuming that the answer will probably be that I *should* knock the dpi setting up to 300 for airbrushing. That way at least the airbrushed parts will print out nicely (everything else will be less quality), but there's no reason to resize the image whatsoever, right?

shunithD wrote:
1/ The size of the image is determined by the pixels (width) x pixels (height). A file of 900 x 900 pixels at 72 ppi is the same size as a file of 900 x 900 pixels at 300 or 600 or even 1000 ppi per inch.
2/ The 72 ppi and 300 ppi is as follows:
a. At 72 ppi, the above file will print at 12.5 inches x 12.5 inches (larger print area, poorer quality)
b. At 300 ppi the file will print at 3 inches x 3 inches (smaller print area, better quality)
Ding!!! Light bulb finally turned on! I've dealt with this confusion for YEARS and YEARS and I understood it to an extent, but only NOW do I finally understand it 100%!
I even read all about it before, but I think the location of this setting has always been the source of my confusion. It seems like it belongs in the print settings to me.
shunithD wrote:
But the file is the same size... Only information to the printer is different. So for best output quality, do what was suggested. Keep the pixels count intact. Just increase the ppi to 300 with the Resample option unchecked.
So, if I understand correctly, this change in the ppi really doesn't matter if I do it before or after I do my airbrushing, does it?

Similar Messages

We have version 10.5.8 photoshop CS3 for Mac. How do we fix a problem with photoshop not resizing dpi? For example we resized a 72 dpi image to 200 dpi, when we do a pdf analysis it read as 344 dpi.

We have version 10.5.8 photoshop CS3 for Mac. How do we fix a problem with photoshop not resizing dpi? For example we resized a 72 dpi image to 200 dpi, when we do a pdf analysis it read as 344 dpi.

Sounds like it's a problem with the Acrobat settings. Did you set them to the same resolution?

How to resize dpi in Lion

I have been trying to learn this Apple OS for the past month. I have been a PC user for many years. I heard so many hyped up good things about apple computers. So far I a greatly disappointed. I am running my 2011 MacMini through my 46" TV screen. The only way I can view all things on it is if I set resolution to a lower resolution than the TV supports. There is apparently no way to increase the DPI so I could read the print like for Safari, bookmarks bar, the menu at the top of the screen. I know all about increasing Icon sizes. I am also running Windows 7 through the Mini. Doing that was no problem. At least Microsoft has built in flexibility. I can also keep it in the native resolution of 1920x1080p. So is there any way I am missing on how to fix this problem?
Gary

It was very simple to do it in Snow Leopard using Terminal, but I do not know how to do it in Lion.
Not meaning to be snarky, but have you tried yet? It's not clear from your post that the Terminal commands worked for you or not in Lion.
And have you just tried connecting the VPN anyway? If you upgraded your existing Snow Leopard, then the settings may still be working.

Exactly What Optimizations Does "Save for Web" Perform?

Hello all!
In Photoshop Elements 5.0, Save for Web works very well for me. I'll likely just use Save for Web most of the time, but occasionally I want to perform only some of the web optimizations on a particular image. I'd like to know how to perform some or all of the same optimizations manually.
Can anyone tell me what steps to take in the Editor (resizing, dpi changes, etc.) manually to mimic the Save for Web function? Or point me to some documentation that explains exactly what Save for Web does to an image?
- JTV

Here's the help section on the subject for E6...should be the same. It should be exactly the same in E5...actually probably no difference in any of the versions.
http://help.adobe.com/en_US/PhotoshopElements/6.0/help.html?content=WSCC0C7B37-3AD2-43ca-9 BF0-677BFC551D97.html
Here's a video on using Save for Web.
http://www.photoshopsupport.com/elements/tt/save-for-web.html
If you want to do resizing manually, Image<Resize<Image Size. Here you can set the image's size and resolution and set if you want the image to be resampled or not.
The compression would be done in the file<Save step.
If you save as a jpg, you can set image quality. Notice that below the preview check box the file size for the current setting is displayed. You can also do a visual check of the before and after image by checking and unchecking the Preview box.
Save As...for other file types display dialogs that apply to that image type.
Here's a link about using Image size dialog if you want to get into specifics and the math.
http://kb2.adobe.com/cps/331/331327.html
There should also be an option in the Organizer for emailing images. Never used it myself by it's over there somewhere...

How does one set the DPI when resizing images in Bridge?

I am sure I am missing something here (so excuse me if its a simple answer) but I am used to using Photo Mechanic and there you are able to set lots of variables while resizing. I don't understand this Bridge resizing window when using Batch Processing thru Photoshop.
-There are two boxes for sizing. If you put the same dimension in both does it just set the longest dimension to that size?
-What if I want say a 10x10 inch image at 72 DPI for web use as opposed to a 10 x10 inch image at 300 DPI for printing purposes, where does one enter that info?
Thanks,
Joshua

You don't "resize" anything in Bridge, nor does it set PPI, pixels per inch—and most certainly NOT "DPI" (Dots [of ink] Per Inch) which is exclusively a feature of the printer.
Bridge is just a File Browser. It used to be called simply the Photoshop File Browser". It doesn't open, edit, manipulate resize or even save anything.
It merely hands the file(s) over to the appropriate application, whether that be Photoshop, adobe Camera Raw, Illustrator, InDesign or even MS Word.
You wrote:
-What if I want say a 10x10 inch image at 72 DPI for web use as opposed to a 10 x10 inch image at 300 DPI for printing purposes, where does one enter that info?
Again, you mean PPI in both instances there.
You enter that in whatever application you're sending the image from Bridge.
For instance in Photoshop:

Is it possible to resize a photo in iPhoto--controlling the maximum dimensions and the dpi?

is it possible to resize a photo in iPhoto--controlling the maximum dimensions and the dpi?

The dpi depends on the print size you'll be making. This explains it in detail: The Myth of DPI.
A 300 dpi image for a 4x6 print will have fewer pixels in it than a 300 dpi image for an 8. 10 print.
You can set the pixel dimension of a photo by exporting it via the File ➙ Export ➙ File Export menu option and use the Custom size setting. However, you should crop the photo to the size ratio you want before exporting, i.e 4 x 6, 5 x 7, etc. Then set the maximum pixel size you want for the image:
OT

Is there a way to minimize packaged links sizes to that of resized dimensions and dpi InDesign C

Looking for a way to minimize packaged links sizes to that of resized dimensions and dpi?
Is this a script? How would I go about finding something like this? What is the best way to
not duplicate images. Storage is beginning to become a problem!
Thanks,
Alex

Hey Alex,
I think that a plugin called Link Optimizer is just what you're looking for.
http://zevrix.com/linkoptimizer.php
Cheers,
-Andrew

Outlook 2010 Signature: Resizes GIF-pictures when you do not have 100% dpi set on display settings

Our automatic signature tool creates signatures for all our employees. The signature works fine until people with non-100% dpi setting on display (e.g. medium 125% or Larger 150% in Control Panel > Display) try to edit their generated
signature and saves. Suddenly the images get resized and blurry, even if it is not displayed as resized when save the updated signature.
It works fine to edit and save if you have display DPI set to 100%.
The company logo is 127x38 pixels, 2,15KB GIF file.
Is this a known bug or something else? I'm not sure its fair to blame the signature-tool as it works okay before the editor has been doing its stuff.
Another strange thing. If I have edited a signature in 125% and saves it. I send an email and the signature logo is blurry. But if I change display DPI to 100% and send another email (logoff and logon first to change dpi) then the logo is fine again.
Seems like the logo is bound to text size

Our company is having this exact same problem. We have Outlook 2010 SP2 and Windows 7 SP1 Enterprise. As the OP we have a signature creation tool that helps us create these HTML signatures dynamically. OP did you ever resolve this issue?
However, in our situation our logo gif image is already 96 DPI. Our HTML signatures work perfectly fine when Windows DPI is set to 100%. But, as soon as you go to 125% or 150% we have problems when saving email drafts and sending emails where the
logo increases in size.
Here is an example of the HTML code for my current signature. Any help on this issue would be appreciated. Is there a way to prevent Outlook from doing this when DPI is increase from default. We have a lot of users that need to increase
the DPI to see their PC better.
<HTML><HEAD><TITLE>GK Signature</TITLE>
<META http-equiv=Content-Type content="text/html; charset=windows-1252">
<META content="MSHTML 6.00.6000.16674" name=GENERATOR></HEAD>
<BODY>
<DIV align=left> </DIV>
<DIV align=left><FONT face="Arial" size="2" color="#002654">Ryan Lewandowski</FONT></DIV>
<DIV align=left><FONT face="Arial" size="2" color="#002654">Senior PC Specialist</FONT></DIV>
<DIV align=left> </DIV>
<DIV align=left><IMG alt="Godfrey & Kahn, S.C." hspace=0 src="http://www.gklaw.com/images/logos/gklogo.gif" align=baseline height=17 width=184 border=0></DIV>
<DIV align=left><FONT face="Arial" size="2" color="#002654">780 North Water Street</FONT></DIV>
<DIV align=left><FONT face="Arial" size="2" color="#002654">Milwaukee, Wisconsin 53202-3590</FONT></DIV>
<DIV align=left><FONT face="Arial" size="1" color="#002654">TEL</FONT><FONT face="Arial" size="2" color="#002654"> • 414.273.3500</FONT></DIV>
<DIV align=left><FONT face="Arial" size="1" color="#002654">DIR</FONT><FONT face="Arial" size="2" color="#002654"> • 414.287.9537</FONT></DIV>
<DIV align=left><FONT face="Arial" size="1" color="#002654">FAX</FONT><FONT face="Arial" size="2" color="#002654"> • 414.273.5198</FONT></DIV>
<DIV align=left><FONT face="Arial" size="1" color="#002654">EMAIL<FONT face="Arial" size="2" color="#002654"> • <A href=mailto:[email protected]>[email protected]</A></FONT></DIV>
<DIV align=left><FONT face="Arial" size="1" color="#002654">WWW</FONT><FONT face="Arial" size="2" color="#002654"> • <A href="http://www.gklaw.com">GKLAW.COM</A></FONT></DIV>
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What dpi & quality when resizing pics in PSE for use in PRE?

For use in Premiere Elements 7:
When resizing my digital camera pictures in Photoshop to the reduced sizes 1000 x 750 you recommend when panning & zooming, there are a couple of additional choices.
One asks for the Resolution in dpi. Should it be 600, 300, or less?
The other thing is: Convert files to ??? JPEG max quality or standard or what?
I'm still a beginner at Premiere, so please don't get too technical!
Thanks, Elisabeth.

Do not worry about asking questions.
As for the .PSD's, these are Photoshop's native file format. They are uncompressed, and can contain Layers of several sorts. Now, I do not use PSElements, so do not know how it would differ from the full version of PS that I use. PS also does NOT have a SlideShow feature, so there could be major differences here. [See, you asked a question that I cannot answer!] If PSE does not list .PSD files as sources for SlideShows, then totally disregard my earlier comments on that workflow. I do all of my SlideShows in PrPro, which does Import .PSD's and in more ways, than PrE does.
Now, JPEG is a compressed file format. This means that some of the data is "thrown away," when the file is Saved_As JPEG. How much will depend on the "Quality" settings. The higher the Quality, the less data is discarded. The inverse is also true.
Now, there are two considerations, regarding image files for Video. One applies only to .PSD, and both apply to JPEG. The main one is the Image Size. This will be the horizontal and the vertical sizes in pixels, say 720 (h) x 480 (v). This applies to both (actually to TIFF's, PNG's, GIF's, TGA's, etc, but we're talking about JPEG and PSD only for now) file types, and applies equally. The Quality setting is the degree of compression. Higher Quality = less compression. This is where PSE is saying to use the higher Quality - in the compression settings. PSD files are not compressed, so this does not apply to them.
Hope that this clears things up a bit. I'll try to track down whether PSE can use .PSD files, but if you have the program, you might want to check the Help (F1) files, under File Formats, and also under SlideShows.
Just for clarity sake, here are the "codes" in my post:
PS = Photoshop
PSE = Photoshop Elements
PrPro = Premiere Pro
PrE = Premiere Elements
Good luck,
Hunt

Bridge Exports Changes Resolution from 300 to 72 dpi, resizing my image

I like to use Bridge (CS5) to export my photographs for printing, and frequently I will use the Export feature to resize the images (e.g., 5x7 vs full size), but every time I export it recharacterizes the images as 72 dpi, vs the 300 dpi I prefer.
Consistent with some of the previous postings (~2 yrs ago) I have seen on this topic the exported images are now "sized" much bigger (29"x20" for what should have been ~5"x7"), and hence expectantly I haven't lost any resolution, but it's aggrevating to have the dpi changed.
Can anyone tell me how to export without having the dpi changed?
And while I'm at it, can anyone confirm that I'm not loosing image resolution?
Thanks so much!!

Can anyone tell me how to export without having the dpi changed?
Can't find any other settings to change and just having tested it I can confirm that it sets ppi (it is pixels per inch -ppi- for a digital file which is made from pixels and dots per inch -dpi- from the ink dots of a print ) to 72.
And while I'm at it, can anyone confirm that I'm not loosing image resolution?
You already stated yourself that you did not loose pixels, therefor the size of the files stays the same. It is just a mater of figures. 300 ppi means a larger concentration per inch and 72 pixels per inch means a smaller concentration of pixels per inch. Given the same amount of pixels for both settings this means a smaller image dimension for 300 ppi and a larger image dimension for the 72 ppi.
300 ppi is some 'magic' number from printed press, but it really depends on the need of the job related printing machine. If you have a small image and need to look closely it should have a larger concentration per inch to reflect its sharpness.
However theoretically you would almost have the same visible quality when printed on 72 at billboard sizes. That's because you always have a large distance between your eyes and the bill board. If you look closely you will see the dots (because the billboard is a product of ink dots…) but of course it is not meant to study at that close range.
The same is for judging sharpness on your computer. Ideally you do so at 100 % for correct judgement at real size pixels. But in reality there will be almost no situation you will study a print at that same distance
Any thoughts on why these would be different? And am I fretting over things unncessarily?
Only guesses, the use a different algorithm or calculation scheme, in my case I tried a Canon Raw (converted to DNG) without any ACR settings then the basics applied and found that Bridge export jpeg 11 creates larger files then using PS.
But there are some other concerns I have and that certainly would make me fretting in use of export module:
First of all I almost never use it, merely in this cases for testing, because using the menu tools give a shortcut to Photoshop / Batch and inhere I have created several dedicated resizing and resaving actions that also places the files in preset folders.
But with this small test I found out that
a: it changes ppi to 72 ppi, not a very big deal but I did not asked for it nor did I wanted it.
b: it converts my Adobe RGB color space to sRGB and I certainly did not want that without my explicit wish for this conversion, so this is more then a bit worrying to my concern.
c: it seems to apply a sharpness that I certainly did not want to happen without my knowledge, and this rules the use of the export module out completely.
Since I only tried a DNG file without settings or retouch/developing in Photoshop the jpeg generated by PS was not very sharp. This makes sense to me because I have set my basic ACR to apply sharpening only to preview. There are a lot of different sharpening theories around but I use one in PS itself. So I was a bit shocked to learn that the export module did all those for me unwanted and not adjustable settings putting me completely out of control…
So if you want to have full control about things happening under the hood yourself just start creating actions in PS, it is very easy to record an action and even more easier to play it. Instead of every time dragging files to export module and always recheck the image options (it seems to reset itself always to jpeg quality 8 on my system) only select the files you want to resize and choose menu tool / Photoshop Batch and select the wanted action. hit OK and your almost done, PS does the rest.
The great thing of the latest PS CS6 action pallet is the extension with a so called 'insert conditional' that let's you create an 'if - then else' action for both landscape and portrait resizing actions so you don't need the 'constrain to fit' or 'fit image' option. Just once create an action for both resizing dimensions and then create a new action with insert conditional. choose If image is landscape play action…. / else play action….
It is really a very productive way. I have a lot of actions (organized in sets for better overview) and even one that creates 4 different sizes in 4 different folders using 1 go in Bridge

I need to resize an image to an 11 x 17 at 300 dpi - I can't find how to do that - HELP!

I need to resize an image to an 11 x 17 at 300 dpi - HELP!

You would resize the image when you export it. The settings would be under File->Export Version.

Resizing image from 72 dpi from FCP

When re sizing an image which is 72 DPI in Gimp, exported from FCP, what dimensions should I enter for size of image when transposing to 300DPI? Images into Gimp from Panasonic GH2 are 4976/2800 pixels.
Catherine?

Yes, images coming out of FCP are 72dpi. I can change the dpi in gimp to the required 300dpi for the printer...the image appears very small in an email...so I beleive I should size my image accordingly when i change the dpi...SO my question is what is a standard image size. The image will go in a film festival program. Does one refer to standard photographic inches measurments, like 5 by 7.
I SORT OF GET IT FROM THIS TUTORIAL BELOW BUT NOT 100%
To summarize, the "size" of digital photos on a computer can mean one of two things. First is the amount of disk storage needed, and second is the pixel dimensions (width and height). Neither of them use inches, so DPI (dots per inch) can't describe a digital photo's size on a computer. Dots per inch only makes sense when printing, scanning, or other situations that have a physical component. As mentioned above, DPI describes the function of a device, not the size of a digital photo.
If somebody asks you to email them a 300dpi photo, ask them to show you an inch of email!

Resizing images through dpi or WxH dimension

I edit pictures but it seems no significant difference between changing dpi or not. In naked eye, it's almost the same!
My question: What is the difference when the image size changes via dpi resolution rather than changing the WxH simply ignoring dpi?
Can anyone explain me which one is best? Thanks in advance.
Note: If I choose first to dpi, it's usually followed by changing the WxH that must be corrected.

Yes if you do not resample not a single pixel is changed. The number of pixels remain the same as does the File size and image aspect ratio. All that changes is the size of a pixel the resolution the pixel density the dpi. Pixels have no size till you specify the resolution. 300dpi means that there are 9000 pixel per square inch each is square 1/300"x1/300" when the resolution is 100DPI there are 1000 pixels per inch each is 1/100"x1/100" the 100DPI image is 9 times larger then the 300DPI image it is 3 times wider and 3 times higher.
When you resample an image not a single pixel remains intact. You wind up with an entirely new image with a different number of pixels so the file size will go up or down depending on the how you resample. Not a single pixel was made using a lens, sensor and firmware. If you do not constrain the aspect ratio during the resampling the image will also distort. When you resample you will always loose some image quality. A print image of the new generated image the number of pixel and resolution may look better close up then the original image still the detail was not captured from the scene. It was generated from some other image by a computer algorithm. Or the number of pixels may have just been reduced so it will fix on a web page, Web page image display at the display devices dpi resolution, The Image dpi is not used for displays are run at a single resolution. Web image display size depends on the display. On a high resolution display the image will be smaller then on a low resolution display.

How do I take 300 dpi photos with my iPhone 4s? And how do I export them to my MacBook Pro at 300 dpi to use as I want to print photos.

How do I take 300 dpi photos with my iPhone 4s?
And how do I export them to my MacBook Pro at 300 dpi to use as I want to print photos.
I have been using the standard camera on the iPhone and require 300 dpi to create photo books as the photos are resized according the layout.
Your time and assistance in appreciated.
Thanks

Thanks Tonefox!
After looking at a few of the links I found a mathematical equation that assisted me.
Inches = Pixels/DPI
eg: 3 inches = 300 pixels/100 DPI
Using this equation and the fact that iPhone 4s takes photos that are 3264 x 2448 I was able to work out the largest print I could make with 300 DPI.
Width 3264 pix/ 300 DPI = 10.88 inches
Height 2448 pix/ 300 DPI = 8.16 inches
Therefore, the largest print (with 300DPI) I can make of these photos is 10.88 inches x 8.16 inches.
Which is great!
So is it critical for me to change the dpi in say photoshop or does it not matter as long as I don't go above the 10.88 inches x 8.16 inches?
From what I can gather the smaller I resize the photo the higher the DPI and the bigger I stretch the photo the lower the DPI?
Further clarification will be much appreciated. Thanks

Using Javascript & Actions to resize an image and add the filename as text

Hello,
I am currently working on a way to take an image, resize it and add exactly what is in it's file name (before extension) as a text layer. I have succeded in this BUT am having issues with file names that require more than one line of text.
I need the text to align to the bottom of the image & the script or action must then resize the image so that the text does not overlap.
Any ideas on how this can be done?
At the moment I am using:
-"Fit Image.jsx" to resize my image to a specific size (This was included in the Photoshop CS5 scripts)
- A script to add the file name without extension and place the file name at a specific position.
AdFileName.jsx
if ( documents.length > 0 )
var originalRulerUnits = preferences.rulerUnits;
preferences.rulerUnits = Units.PIXELS;
try
var docRef = activeDocument;
// Now create a text layer at the front
var myLayerRef = docRef.artLayers.add();
myLayerRef.kind = LayerKind.TEXT;
myLayerRef.name = "Filename";
var myTextRef = myLayerRef.textItem;
// strip the extension off
var fileNameNoExtension = docRef.name;
fileNameNoExtension = fileNameNoExtension.split( "." );
if ( fileNameNoExtension.length > 1 ) {
   fileNameNoExtension.length--;
fileNameNoExtension = fileNameNoExtension.join(".");
myTextRef.contents = fileNameNoExtension;
// off set the text to be in the middle
myTextRef.position = new Array( docRef.width / 2, docRef.height / 2 );
myTextRef.size = 12;
        myTextRef.font="Arial-BoldMT"
        //set position of text
        myTextRef.justification = Justification.CENTER;
        myTextRef.kind = TextType.PARAGRAPHTEXT;
        myTextRef.width= docRef.width;
        myTextRef.height= docRef.height/ 2;
        myTextRef.position= [0, docRef.height * 0.88];
catch( e )
// An error occurred. Restore ruler units, then propagate the error back
// to the user
preferences.rulerUnits = originalRulerUnits;
throw e;
// Everything went Ok. Restore ruler units
preferences.rulerUnits = originalRulerUnits;
else
alert( "You must have a document open to add the filename!" );
Can the position be changed to allow more rows of text but keep it aligned with the bottom of the layer?
How can I script in a way to make the image resize based on the amount of text lines?
Any help would be greatly appreciated.

You can add a text layer any where the only thing you need to worry about is the size of the font you use. You can normally calculate a font size by saving the images resoltuion and then setting its resolution to 72 DPI calculate a font size basied of the images pixel width and the number of characters you want in a line. After adding the text layer you can restore the image to its original resolution and align the text layer by making a selection and alignint the text layer to the selection. There are nine posibilites like the positions in the selection you can align to like a tick tack toe board. You need to use a script to add the text layer because your retrieving the filename. The positioning of the text layer could be done easily in an action the would use the scriot to add a text layer the do a select all the align the added text layer to the selection.
About your script don't make text paragraph just add new line characters to make a multi line text layer So it can be positioned easily
I do just that with my stampexif action. The action uses my stampexif Photoshop java script to add a multi line text layer containing some formatted EXIF data then the action centers the text layer and add a layer style to it. Link http://www.mouseprints.net/old/dpr/StampExif.jsx Example

Resizing DPI

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