On 03/03/2012 03:34, "Jonas Lopez" <[email protected]> wrote:

> G'day Santa,
> Yes, iPhoto has in the EDIT mode a BW button, BUT THIS IS FAKE!
> 
> Let me tell you why.
> All it does is print ALL COLORS and BLACK making a FAKE BLACK AND WHITE PIX.
> 
> Not that it matters, but with the house in foreclosure, cancer, job loss,
> pregnant, and brother being deported, we can not spend a penny to buy a color
> cart, but I wanted to print using ONLY THE BLACK INK ----- NO COLOR FILL INS
> == This I have already done, it is ALL BLACK OR ALL WHITE, on a scale of 0 to
> 9 it is a 1 or 2.
> 
> Years ago we had newspapers printing using ONLY BLACK INK, which is all I have
> to work with NO COLOR AT ALL, so now you see how this is fake --- not using a
> halftone screen!!!! This could give a 7 or 8!
> 
> Any other sources for a REAL screen?
> 
> Regards
> JML
> ==================================================================
> 
> --- On Fri, 3/2/12, Brian Christmas <[email protected]> wrote:
> 
> From: Brian Christmas <[email protected]>
> Subject: Re: G4 10.4 or 10.5 looking for way to halftone a picture to print in
> BW
> To: [email protected]
> Date: Friday, March 2, 2012, 5:51 PM
> 
> 
> On 03/03/2012, at 12:12 PM, Jonas Lopez wrote:
> From time to time I want to print in BW. Get the effect of aging in old
> photographs, or make your pictures look "classic" and use the black-and-white
> effect, etc. 
> 
> I run G4 10.4 or 10.5 looking for way to halftone a picture to print in BW,
> NOT INTEL.
> 
> Any ideeas I do NOT have photoshop.
> 
> A site letting me up load the pix and dl it back in halftone would work just
> fine.
> 
> Thanks.
> G'day Jonas


    I think you're looking for greyscale printing - newspapers did indeed
use a low res B&W halftone screen - about 80 lines per inch I think and
black ink only which gave the appearance of tone to the human eye by varying
the size/distance between dots. This was analogue imaging though and digital
is very different but your image editor should have the ability to convert
an image to greyscale - 256 levels of grey calculated from the RGB channel
values - and your printer dialogue should have the option to print in
greyscale only - I have three printers and I know that at least two have
this option.

Pete


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