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I've been lurking this board for a long time, and finally have had a need to ask a question. I've read lots of the halftone posts about output and what not, but here is my question.
So, i know it is a t-shirt forum, but i am about to print a poster with just a black halftone, not color separation. It's a large poster, so i am going to half film work done for it; im just wondering, if i wanted to supply my digital file with my image already halftoned could i just use Filter>Pixelate>Color Halftone in photoshop? It seems to give a pretty clean halftone for single color. Does this sound like an okay idea?
Re: I know, another halftone question (its quick!)
That would be fine, or you could let the RIP do the work.
Arty type halftones are often exaggerated, my RIP only goes down to 5lpi so if you want something coarser it needs to be done in the artwork.
Re: I know, another halftone question (its quick!)
okay cool. I was thinking about just letting the RIP do it when the film work is being made, but my poster is gonna be 22x33 inches, so i'm not entirely sure how big/small i want my halftone dots to be at the moment. I'm gonna do a couple test runs on a large format black and white printer first. The photoshop plugin seems fine, except you really are unsure of what the lpi is, and i dont want to end up going too fine. I guess thats what the test digital prints are for. Thanks. (any other feedback is totally welcome)
Re: I know, another halftone question (its quick!)
Rather use Corel Photopaint, and use their JARVIS halftone - this gives you a stochastic dot which will give much better image quality and more detail that Photoshop's halftones.
When using Jarvis, the resolution of the file (in dpi), determines the size of the halftone dot. Use a resolution of 110 to 135dpi for really fine detail.
I know, another halftone question (its quick!) 
