Pixel is also Queen!

Info in English and German – Info in Deutsch und Englisch

English version:
Having just conducted an on-site training seminar at a former student’s corporate headquarters, we encountered another element of confusion in defining file size and/or resolution as needed for printing processes.

In case you are unable to view the file information in a program like Adobe InDesign or Illustrator that provides “effective PPI” info, or Photoshop which allows professional resizing methods, you can also mathematically “measure” a file.

Simply select the image file and click Command i (mac) or perform a “right click” with the mouse (pc) to view the file information for it’s pixel Width x pixel Height dimension i.e. (3000px x 3000px)


Simply divide (/) these dimensions by the intended resolution – 300dpi (Pixel Per Inch) or 118dpc (Pixel Per Centimeter) for printing processes = 10 inch by 10 inch or 25.4 centimeter by 25.4 centimeter, which is the actual printed image size.



Sollten sie keine dieser Programme wie Adobe InDesign oder Illustrator zur Verfügung haben” um die effektive PPI” information herauszufinden, oder Photoshop in welchem wir professionell die Bildgrösse ändern können, dann können sie auch “mathematisch die Grösse einer Datei messen”.

Ganz einfach: Klicken sie auf ihre Bilddatei und wählen die Tasten Command und i (Mac) oder “Rechtsklick” mit der Maus (PC) um die Pixel Breite x Pixel Höhe zu sehen (Unter Eigenschaften > Details). In unserem Beispiel: (3000px x 3000px)


Teilen sie ganz einfach (/) diese Grösse mit ihrer Resolution für den Druckprozess – 300dpi (Pixel Per Inch = Zoll) oder 118dpc (Pixel per Zentimeter). Damit erhalten sie die richtige Druckgrösse = 10 Inch/Zoll x 10 Inch/Zoll oder 25.4 Zentimeter x 25.4 Zentimeter.




Pixel is King!

English version:

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TIP OF THE WEEK: How to change the image size of a photo in Adobe Photoshop


Teaching Photoshop for so many years, we’ve come across the same issues over and over again. One of the major problems especially for beginners is; how to re-size an image to 300 Pixels/Inch for print. Actually it is VERY simple: All a user has to understand is that Photoshop is based on pixels.
Simply pay attention to the “Pixel Dimensions” while changing the size of the image. The Pixel Dimensions should always remain the same! Reason: if Photoshop deletes Pixels or adds on Pixels, our image quality changes for the worse, gets blurry etc.

Step 1: Open the image in Photoshop CS6. Go to MENU > IMAGE > IMAGE SIZE.
Pay attention to the Pixel Dimensions which should remain the same. The Width and Height are linked together.


Step 2: Click off the Box “Resample Image” now the Width, Height and Resolution are linked together. Pay attention to the Pixel Dimensions on top. They are the same as before.


Step 3: Type in the Resolution field 300 Pixels/Inch for print. Notice that the Pixel Dimensions stay the same.
This means that we have changed the size of the image BUT, the Pixel Dimensions remain the same, so we have optimal quality for print.


Keep in mind that DPI is not PPI is not LPI and although there are many opinions as to the best re-sizing methods, one should at least utilize and compare the results of the 6 different re-sampling methods available at the bottom of the Photoshop image size dialog box, as the Automatic default setting “Bicubic Automatic” may not always be optimal.

TIP 2: how to enlarge an image in Photoshop CC