P: When exporting at low res, and inserting Dimensions into filename, LR inserts old dimensions

For clarity, selecting "Crop" instead of "Dimension" in the Metdata drop-down in the Filename Template Editor will not help.

"Dimension" will give you the size of the full sized original image.
"Crop" will give you the cropped image at the original resolution.
There still appears to be no way to include the dimensions of the final exported image (after it has been through the re-size step during exporting).

I think this is a reasonable request for a new feature.

Yes, logically the metadata that is used in building a file name for export must be read from your edited image within the Catalog, just as how the appearance of the newly made image comes from that.

If you want to append the resized pixel dimensions onto an export, you can enter these as fixed custom text within a file renaming template. For example, you could save a new export preset named for a certain standard output - say, 800x600. You could select these pixel dimensions in the Resizing as part of making that. Also as part of making that, you could select a renaming template that e.g. combines each edited image's (varying) filename with a constant text suffix that denotes these particular pixel limits.

NB this cannot describe the accidental results from a potentially different aspect ratio being fitted into these limits. So if your resizing requests 800px on the longer edge, say, it might be better to just state that in the filename. The other dimension may actually turn out 574 or 542 in a particular instance, and to state 600 would in those cases be wrong.

Then you can recall this export preset and this will repeatably both deliver those export dimensions, and the related file naming. Multiple export presets can be invoked in one go for a given export batch, if you desire.

If you must individually report the actual exported dimensions, then I suppose the only way would be to export images as resized selecting for these to be reimported to the Catalog, and then re-export those prior exports without any further resizing but naming for their actual dimensions, and then delete the intermediates both from the Catalog and from disk. Sounds tedious to me!

I reread your post and there is no way to do that in LrC.

Instead of choosing "Dimension", choose "Crop".  This will give you the cropped dimensions in the filename.

Did you want to:

• Request a new feature, an Idea, specifically allowing a rename during export based on the exported image vs the source image (as occurs in your scenario)
• or are you looking at a Bug (thinking something has gone wrong)
• or asking how to accomplish what you want? A discussion?