 :Not usually. Standard display size is 220x for normal images, but users can set a different preference size, and most who do choose a larger size. upright lets the system know that certain images are meant to be taller than they are wide, so can be used to scale images within the context of the user's preferences. On the other hand, if you set a particular pixel size instead of using a scale, you override the user preference. That's why the image policy says we generally shouldn't do that.   