Here’s an instructional screenprinting video I have been meaning to do for some time. This is a great video for people starting out with screen printing tee shirts who need some clarification about halftone and spot color artwork. I hope this helps out. I do know Photoshop can print bit map halftones without RIP software. But vector art is the standard in the industry so that is what I use and teach. Vector halftones and bit map halftones are very different in quality and capability. I hope this at least helps you all in knowing the difference between spot color and halftone artwork.