Im not sure how to I should size my prints before going to costco and getting them made. Im looking at getting some 4x6 made for now.
1) make high resolution JPEGs that are the same size as the RAWs (in other words not resize anything, keep quality at 10, etc). In this case the costco soft ware would "squish" the file into a 4X6....right?
2) resize the images to smaller JPEGs to the size I intend to print (4x6), keeping aspect ratio, quality 10 etc.
What are the bad/good of each?
Also, should I change the DPI to anything other then 350?