# 4014- Corel PHOTO-PAINT  4 Issues

This document outlines issues and limitations associated with Corel PHOTO-PAINT  as well as
tips for improving system speed and performance.

Issues and Limitations
1.  Toolbox and RollUps can only be manipulated if an image is open on the screen.

2.  Some options in the Effects menu require complex and lengthy memory calculations. 
Therefore, processing may be slow.  If the wait cursor appears active, let the process finish.

3.  The color calibration settings under File, Prepress, and File, Edit Tone Map are also duplicated
under other menus.  This makes it convenient to apply these features to all applicable functions.

4.  Under File, Prepress you can create new color circuits.  Unless you are producing extremely
high quality output, i.e.,1270 dpi and above, choose Better as your color circuit Quality. 
Selecting Best causes large delays in the saving of a circuit.

5.  Corel provides drivers for the following scanners, to allow direct scanning into Corel
PHOTO-PAINT:
          Canon model CJ10, BJ-10
          Epson 300C
          HP ScanJet Plus and IIc
          Logitech Scanman,  Scanman Plus,  Scanman 256/32
          Microtek 200, 300, 400, 600, 800, 1850


Other scanners must be fully TWAIN compliant, and TWAIN drivers must be obtained from the
scanner manufacturer to allow direct scanning.

Improving Performance
Corel PHOTO-PAINT is a bitmap editing application.  Bitmaps, require plenty of free disk space
and memory.  When a bitmap is opened in Corel PHOTO-PAINT, it is rendered on screen as a 24
bit image no matter how it has been saved.  This feature allows you to have full access to all
editing tools.  A duplicate copy of the image is held in memory to permit you to undo a mistake. 

Therefore, an 8 bit image at 200 kilobytes in size converted to 24 bit format takes up three times
as much space in memory. This is maintained twice, once for the image you are editing and once
for the Undo step. 

If certain features such as Split Channels are applied, each color channel requires the same amount
of memory again.  The 200 kilobyte bitmap may now take up over 5 megabytes of memory space. 
This figure does not include the hard disk space required by Windows temporary files.  
To improve performance, try the following suggestions:

          Keep on screen separations and open images to a minimum.

          Close all applications except Corel PHOTO-PAINT when working.

          Turn off all unnecessary Terminate Stay Resident (TSR) programs.

          Run CHKDSK /F, once a week, to eliminate hard drive errors.

          Regularly remove any *.TMP files.

          Ensure that there is at least 10 MB of free hard drive space in the TEMP location.

          Constrain the image size to under 10 MB if possible. Working with larger files is possible
     but performance will decrease as file size grows.
          
          Create both high and low resolution versions of bitmaps.  Import the low resolution copies
     into CorelDRAW until print time. These will serve as place holders and allow faster
     manipulation of the files.