PSE: Increase selection while maintaining shape

Allright, so it’s a phenomena from the past without a functional reason which I couldn’t figure out. Good to know!

I tried your sugestion step by step and the result is exactly what I was looking for!

Filter>Other>Minimum enables me to enlarge a selection by a number of pixels (instead of %) without cutoff corners. Clever use of the filter functionality 😊

I figured out that if the purpose is cropping, then the method of “Select > Modify > Expand” will still be the fastest way of doing. This is because cropping is always done in a neat rectangular shape, and will not be limited by the cutoff corners of the enlarged selection.

But if you don’t want to crop than Jeff_Arola’s “filter” solution (allowing # pixels enlargement of a selection) is much better.

And if % enlargement is ok, then using the actual crop tool % method as described by 99jon is the choice to make.

Thanks for everybodies contribution 😊.

Good idea. Thank you all 🙂

Thanks 99jon for your help, crop tool seems the best way to do it (and most logical too I must admit) with a few remarks:

1) I press alt+shift while dragging, to keep the enlargement in equal % in all directions and thereby getting an equal amount of crop enlargement on all sides. Just additional info for the other readers of this thread. 

2) the disadvantage of this method (as far as I can judge), see fig 5,  is that I can't fill in a fixed number of pixels to add to the crop size. Instead a % is the only way of doing. So repeating the same method for a slightly different picture will not lead to the same enlargement as a method via "selection expansion" would do. But ok.

Still wondering though why Select > Modify > Expand cuts corners.

Your alternative does works, thanks for the suggestion, but I should have been more clear that is not my goal to add a frame of a certain colour around a selection, but very basic, just to enlarge the selection with X pixels while keeping the ratio (shape) of the selection the same. Please let me explain with an example what I mean:

By the way: feather (or doezelaar as it is called in dutch) is zero (see fig 1a):

Also the feather selection is set to the minimum of 0.2 (fig 1b):

I select the rectangular selection tool and draw a rectangular selection around my subject, the dashed selection in the corner is rectangular shaped. (see fig 2):

Then I use Select > Modify > Expand to enlarge the selection by a numer of pixels, now the dashed selection in the corner is cut of by a 45 degree (see fig 3):

If I use this selection to crop or copy/paste the image (for example) then I loose little parts of the corner of my selected subject (see fig 4):

I have my cumbersome ways to work around this, but I wonder why my settings are causing the corners to be cut off. It's not the feather (it's set to 0 from the beginnning). I hope somebody has any idea, or otherwise knows a better way to enlarge any rectangular selection while maintaining the aspect ratio. Thanks.