need plugin advice re: halftones

BM
Posted By
brian_mangum
Dec 1, 2006
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329
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as most of us know, Photoshop’s ability to halftone is mediocre at best. Ive tried the filters and even the haltone method under bitmap, but the dots still look so pixelated -even at 1200dpi. I know the dots will never be vectors in photoshop but thick ‘plus signs’ for circles is unacceptable. I know I could bring it all into illustrator for live trace but it seems like overkill. can anyone recommend a decent plugin for mac that will produce halftone effects the way they are supposed to look?
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JS
John_Slate
Dec 2, 2006
Why do you feel you need to screen images?

Screening is usually performed strictly in output (ie in a rip)

Are you making coarse screens for effects or something?

I believe the best result from the bitmap>halftone method happen when destination file resolution equals 16x the screen ruling… which means for coarse screen rulings, choppy dot edges.

There is a Photoshop limitation in that method whereby you can only specify 64x the screen ruling for resolution and end up with the screen ruling you specify, otherwise it makes a finer ruling.

So if you wanted to make a 2 lpi image you could use a maximum of 128ppi.

To get a smoother dot @ 2 lpi you would need to then go into grayscale, do a bicubic resampling higher, (maybe with a very slight blur thrown in) then convert back to bitmap at a higher ppi.

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