Have you ever wanted to export your processed images from Lightroom, but at a much larger size than the original size.
Above is a typical RAW file with some adjustments made within Lightroom. I would like the exported file to be 260cm on the long edge, with a resolution of 250 pixels per inch.
Below you can see the export dialog box (available from the Lightroom Menu / File / Export). You can see that in red, the export file type has been specified to be TIFF/16bit. Under the Image Sizing, the Long edge have been chosen (this can be changed based on your needs of course). Then the new length has been specific as 260.00cm, with a resolution of 100 Pixels per CM.
If the Pixels per CM is changed to Pixels per Inch, you will see the value in inches (in this case 254 Pixels per Inch).
Then clicking ‘Export’ will create the larger file in the specified location with the Lightroom adjustments applied.
Also, don’t forget, you can also up-sample an image in Photoshop as well. I wrote a blog post on this techinque a while ago when the new “Preserve Details” feature came out in the 2015 release.