Blow Up keeps photos crystal clear during enlargement. Especially in large prints hung on a wall, the difference between Blow Up and Photoshop is astounding. Version 3 makes pictures even sharper without computer artifacts. If you understand Photoshop's resize command then you already know how to use Blow Up. Our large library of standard paper sizes makes it even easier. With Lightroom and CMYK support, Blow Up fits into a professional workflow.