09-12-2021, 07:17 AM
Still not sure what a dedicated PS 'constrain proportions' but Gimp has links between height and width in various tools to maintain an aspect ratio.
With the pixel size known and a target of 150 ppi it becomes scaling 25.52" x 150 and 38.25" x 150 = 3825 x 5738 pix.
After scaling, use Image -> Print size and change the ppi to 150. This is just information contained in the image file which 'tells' the printer the size.
With the pixel size known and a target of 150 ppi it becomes scaling 25.52" x 150 and 38.25" x 150 = 3825 x 5738 pix.
After scaling, use Image -> Print size and change the ppi to 150. This is just information contained in the image file which 'tells' the printer the size.