Re: make pictures look good in PowerPoint 2003 using 256 colors -

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In article <53CA34B4-C66F-4628-B5CB-F762931CFAE1@xxxxxxxxxxxxx>, Frieda wrote:
> Hi Steve,
>
> I'm working in Photoshop CS. The mode is set to RGB, 8bits/channel.
> The Profile Setting is "Don't color manage".
>
> I use the "Save for Web" feature and Save as a JPG, Progressive, Optimized on.
>
> This produces fantastic looking photos when they are previewed in internet
> explorer, when my screen (display) settings are at 256 colors.

To interject a bit: Explorer (or Windows) is doing the color reduction to 256 colors
(ie, 8-bit) then, because JPG is always 24-bit color; also, Explorer is displaying
one image pixel per screen pixel. That's important to keep in mind. Onward:

> I tried to save as PNG-8, Windows turned on, diffusion with 100% dither, and
> auto colors. This (according to Lynda Wyman) produced good photos, had the
> dots, but looked good. They looked good when viewed with internet explorer.
>
> But, when I put the pictures into PowerPoint 2003, they still come up with
> the dots in a different pattern -- like a grid. I think there's something
> with how PowerPoint is reading the files I put in. It must be doing something
> with the colors.

No, but it's not displaying the image pixels one-to-one against screen pixels the way
Explorer is; that's the drawback of dithered images; when you resize them, it can
get pretty nasty looking.

> I even tried to copy, paste special, and tried all of the "Paste Special"
> options -- which didn't seem to change the gridding, but did change the size
> at which the pictures were pasted -- the BMP setting made it come in a bit
> larger (probably because it was reading the pixels and made adjustments for
> that).

Copy/Paste is a whole different can of worms and not likely to help anything. I
wouldn't go there.

> So, I'm still wondering, what I can do make that grid pattern disappear.

You'll need to back up to Photoshop and tell it not to do any dithering.
Give that a shot and let us know how it works out. I don't have PS CS and haven't had
any earlier version installed in quite some time so I don't know the exact
steps/dialog boxes to work through - maybe someone else can help with that.


> Thanks so much for your help -- I'm posting this again by the way, under a
> different heading, just in case you don't know the answer. Thanks again for
> the help you've provided.
>
> Frieda
>
> "Steve Rindsberg" wrote:
>
> > In article <85186B8D-B8B8-470C-8ACC-5F6EF94E6BD8@xxxxxxxxxxxxx>, Frieda wrote:
> > > Thanks again for your help.
> > >
> > > I have tried the "Save for Web" and have tried using color profiles for
> > > Windows, saving in different formats, but still can't get the pictures to
> > > look good. I think it's a problem with the 256 colors I'm using in Photoshop,
> > > somehow aren't compatible with the 256 colors that appear on the screen. The
> > > pictures always come out with dots on them, obviously because one of the
> > > programs is attempting to simulate a color and the best it can do is with a
> > > dotted image.
> >
> > That's called "dithering"; it's one way of extending the color range and faking
> > more colors than you can really create but as you've seen, it doesn't always work
> > so well. Your image editing software should give you the option not to use it
> > when you convert to 256 colors. I used to do this a lot in Photoshop and as I
> > recall the trick was to choose Optimized colors, include Windows colors and NOT
> > to dither.
> >
> > >
> > > I thought maybe PowerPoint had some kind of conversion that might work when
> > > importing pictures.
> > >
> > > Thanks again for your help. I appreciate your time and effort.
> > >
> > > "Ute Simon" wrote:
> > >
> > > > > Thanks for responding! I have photoshop and am trying to prepare a
> > > > > document
> > > > > for a customer who asked for Word Documents prepared for 256 color
> > > > > viewing.
> > > > >
> > > > > The photos I'm using are combined with PowerPoint graphics, so that's why
> > > > > I
> > > > > asked how to make photos look good with 256 colors. It's a impossible
> > > > > situation, but I've got to do the best I can given these requirements.
> > > >
> > > >
> > > > Frieda,
> > > >
> > > > I think this is mainly an image editing problem, and I don't know Photoshop
> > > > good enough to have any tricks how to retouch your images in it. Instead of
> > > > doing a normal file save, you could try to use Photoshop's Export for web,
> > > > which gives you more options to optimize the picture.
> > > >
> > > > Kind regards,
> > > > Ute
> > > >
> > > > --
> > > > Ute Simon
> > > > Microsoft PowerPoint MVP Team
> > > > und PowerPoint-User-Team
> > > > Tipps, Tricks und kostenloser Newsletter auf www.ppt-user.de
> > > >
> > > >
> > >
> >
> > -----------------------------------------
> > Steve Rindsberg, PPT MVP
> > PPT FAQ: www.pptfaq.com
> > PPTools: www.pptools.com
> > ================================================
> >
> >
> >
>

-----------------------------------------
Steve Rindsberg, PPT MVP
PPT FAQ: www.pptfaq.com
PPTools: www.pptools.com
================================================


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