Export Image Sizing

[hermes1]

I'm trying to export my images with a specific size setting.  I need 3840x2160 but Lightroom Classic does not appear to be working as I think it should.

Original image before export is 6720x4480

In export settings, set Resize to Fix, Width and Height to 3480x2160

Resulting output image is 3240x2160

Export does not seem to change aspect ratio during export.  I know I can "crop" to the size I want, but I want to export 100's of images to use with my Samsung Frame TV.  The exact 3480x2160 allows the Frame to display the images full screen without a mat around the image.

Anyone know how to batch resize photos in Lightroom or during export?

[Rob_Cullen]

All the Lightroom Apps require you to CROP to the required aspect ratio that you want in the Exported file.

Your Originals are aspect ratio 10:15

You want Exports at 10:16

The [Resize] in the Export dialog will not change the aspect ratio of an image- it can only 'FIT' the image within the dimensions given in Export.

You are resizing 6720x4480px (15:10)  into a 'box' that is 3480x2160px (16:10), so to maintain the Aspect ratio of (15:10) the output will be 3240x2160px to 'FIT' within the export dimensions. This is the result you are seeing.

Crop your images to 10:16 first and then your exported files will 'FILL' the 3480x2160px.

An illustration that suggests similar is-

 

[DS256]

I think you asked this question on the Lightroom Queen Forum. Here is my response with a suggestion https://www.lightroomqueen.com/community/threads/help-resizing-image-during-export.44599/#post-12954...