Re: Line Ghosts

This is a good example that images should be created and maintained in the 
graphics' program native file format.  Only after all work has been 
completed and signed off should a copy be saved as a .JPG, .GIF or .PNG 
file for use on the web.  By using the native format when 
creating/manipulating an image, there is no loss or distortion.

If you receive your artwork from a client as a .JPG, for example, one 
should immediately save it in your graphic program's native format.  That 
way, any changes made (if needed) will not distort the image.  One should 
always work off a copy of the master image.  Final production copies are 
then made from that master copy.

Kukla

At 11:05 AM 3/19/02 -0800, you wrote:
>Steven,
>
>At first, I couldn't see what you were talking about, but that's probably
>because my screen resolution is set so high (1600x1024). I did a screen
>captur and zoomed in, though, and I think I see the problem. It's caused by
>the fact the image is a JPG image. JPG, due to the way it compresses and
>image, frequently leaves artifacts like this on continuous-tone images such
>as line art or drawings. The only way to correct it is to redo the entire
>image from scratch, chop out all the non-photographic elements (the tire
>lifter and example photo), then save the rest as a GIF image, placing the
>photographic elements in where you want them as JPG... Or you could redo the
>who thing as save as PNG, but not all browsers support PNG yet, and PNGs can
>be pretty big.
>
>Email me offlist if you'd like more explanation of what I mean...
>
>Good luck!
>Kehvan
>
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>
>
>----- Original Message -----
>From: "Steven W Loney" <steve(at)thewebguy.ca>
>To: <hwg-graphics(at)hwg.org>
>Sent: Tuesday, March 19, 2002 08:30
>Subject: Line Ghosts
>
>
> > Hello All!
> >
> > I just went live with a site and someone asked me why there are faint
>lines
> > parallel to parts of the pin stripe.
> >
> > I'm viewing with 16bit color and I hadn't noticed this until it was
>pointed
> > out to me. The graphic was exported as a sliced jpg from a psd but the
> > faint line is not the edge of a slice. I'm baffled as to why it's there.
> > I'm used to seeing jpg's get a little dirty along the edge of an irregular
> > shape but why does this ghost appears several pixels away from the
> > pinstripe when the pixels in between are the proper background color.
> >
> > Any explanations? You can see it (or perhaps not) at  www.itza.ca  under
> > the logo in the top left corner.
> >
> > Steve
> > www.thewebguy.ca
> >
> >
> >


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