Re: stripey scroll bars

[Max Wyss <prodok -at- PRODOK -dot- CH>]

Alex,

what you see here are moirés. These are patterns which appear when two
screens of slightly different pitch are put on top of each other.

When you get moirés with screen shots, it is a clear sign that the
resolution of the screen shot and the printer resolution are not adjusted.
This most likely happens when the screen shot is scaled in the document.

The solution is to process and scale screen shots in an image processing
software (such as Adobe Photoshop) to a multiple of the printer's
resolution or screen frequency. This will make sure that one pixel of the
screen shot will turn into one or a cluster of 2x2, 3x3 etc. pixels on the
final printer. Of course, this also forbids any scaling of the screenshots
after they have been placed in the document.

Hope, this can help.

Max Wyss
PRODOK Engineering AG
Technical documentation and translations, Electronic Publishing
CH-8906 Bonstetten, Switzerland

Phone:  +41 1 700 29 21
Fax:  +41 1 700 20 37
e-mail:  mailto:prodok -at- prodok -dot- ch
WWW:  http://www.prodok.ch/prodok


Bridging the Knowledge Gap


______________________



>Mark Magennis <markmagennis -at- YAHOO -dot- COM mentioned the "stripey scroll
>bar" effect in ScreenCam.
>
>I have seen this in a few static screen captures and was wondering if
>there is any way around it, short of doing a pixel-for-pixel color
>swap.  Actually, the ones I've seen have more of a checkerboard
>pattern when *printed* (not on screen).
>
>Does this occur in the process of capturing the screen elements
>(using Ctrl + Print Screen)?  Is the app (Paint Shop Pro) I use to
>make the screen cap into an image file causing it?  Is it the format
>in which I save the image (usually .png or .wmf)?   Ack.   Any ideas?
>
>Thanks,
>Alex


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