Lightroom Classic Resizing Issue

I am using the newest version of Lightroom Classic on a Mac and I am trying to resize from 4320x6480 to 2550x3300... I have all the settings correct (I think) but my output is only 2200x3300 I have tried changing any setting available but it will not change the first size... HELP!

 

By @Eddy98A1

If this is for a submission, I think the 2550x3300 is the maximum allowed on height and width. As long as your export fits inside that box you are ok. There is no need to exactly meet the dimensions since that would distort your photo.

further to Conrad C's excellent answer, the concept that helped me to understand the resizing settings was:

These numbers do not directly control what your picture's resized TO. They control a "containing box", which each exported picture is then scaled down to fit INTO - and if the picture is ever squarer or skinnier shaped than this "box" is, then it can't completely fill that "box".

IOW, the resizing settings don't state what you will get. They state the upper limit on what you can get.

If you specify only one dimension, either the longer or the shorter side, then you can know this will be the governing dimension.

When you specify both width and height, then either one may become the governing dimension depending on the picture's shape vs the box's shape. Taking the simplest example of a square "box", the width of this will govern any landscape orientation photo, for a lower resulting height than the box's height. Conversely, the box's height will govern the sizing of any portrait orientation photo. And both will equally govern a square photo, which can completely fill a square "box".

If you wanted (say) to ensure that the Width was always used as the governing dimension, regardless of photo orientation - then you can set a very large value for the height. All images will in practice then hit the left and right sides of this imaginary, very tall and narrow "box" FIRST - and never approach its top and bottom limits. E.g. I could set 1800px wide x 20000px high, and always get that width, and never get that height.

Corollary: it doesn't have to be an aim, to crop every image to match the Export settings you use. A given image may be required to participate in many different sorts of export over time, each with different sizing requirements. For me the careful composition of an image is too important, to keep altering just for some momentary purpose. So the trick is IMO, to accept that some output requirements are primary, and others will correspondingly vary.

If one ever did want to crop images so as to FILL (rather than FIT) a particular output format exactly, the Print module can perform an additional "shape trim" on the fly - including, for JPG output - and thus not require any change to the normal compositional crop of the photo.

It looks like the problem is that your starting and ending proportions are different.

4320 x 6480 has an aspect ratio of 1.5 (3 x 2), typical of digital camera sensors.

2550 x 3300 has an aspect ratio of abut 1.3.

If you simpky resize on export, it preserves the original proportions by default so you get 2200 x 3300, or 1.5 (3 x 2).

To fix this, add a step before exporting. Use the Crop tool set to a custom aspect ratio of 2550 x 3300 so that you can decide which parts of the ends to cut off, also enter 2550 x 3300 when you export, and it should work out.

4320x6480 does not have the same ratio as 2550x3300, but 2200x3300 does.

Are you trying to crop or simply resize?

warmly/j