]~F3~~s12~~C~~SB~~SU~Using MacVision With Vision Lab:
~L~~SP~~s9~
To use MacVision with Vision Lab you must use ResEdit to install the MacVision desk accessory directly into Vision Lab. To do this first open up the MacVision Font/DA Mover ╥suitcase╙ file with ResEdit. Then double click on the DRVR resource type and select the MacVision desk accessory. Now copy it and close the MacVision Font/DA Mover file. Open Vision Lab with ResEdit and paste the desk accessory you just copied. OK, you are ~SU~almost~SU~ done now. Find the DRVR resource type you just pasted into Vision Lab and double click on it. Select the MacVision desk accessory and do a command ╥I.╙ Now simply rename ╥MacVision╙ to ╥.MacVision╙ (put a period in front of its name) and click on the ~SU~Driver~SU~ radio button. If you followed all the steps correctly you are done! Remember, however, that MacVision will not work on machines with 68020s. This includes the Macintosh II and any ╥supercharged╙ Macintoshes.
If the MacVision driver is installed Vision Lab will open with a MacVision menu installed after the BitMap menu. MacVision 2.0 is an application and hence, will not work with Vision Lab. (Talk to Koala not me!) MacVision 1.4 will ~SB~not~SB~ work on a Macintosh II or any other Macintosh without the standard 68000 CPU but you can record the gray scale data using a regular Macintosh and then view it on a Macintosh II. Some of the functions in the MacVision desk accessory assume a screen size of 512 X 243 and are not available on Macintoshes with large screens.
~SB~Adjust MacVision¬:~SB~
Use this command to adjust the brightness and contrast settings on the MacVision hardware device. If you are using a large screen or have the preferences set manually you will ~SB~not~SB~ be presented with the ╥normal╙ MacVision adjust. Instead you will see a ╥real time╙ histogram based on a small scan size image. Ideally the brightness control moves the histogram left and right and the contrast control expands and shrinks the histogram.
~SB~MacVision¬ Halftone:~SB~
This command produces a halftoned image on the screen using the MacVision desk accessory. The image will ~SB~not~SB~ be saved in memory! You can use this command to get a quick ╥preview╙ of an image before actually recording it. This command assumes the screen is 512 X 342 and is not available on Macintoshes with large screens.
~SB~Record MacVision¬:~SB~
Selecting this menu item will start the recording process. Instead of scanning the image to the screen this function records the data coming in from MacVision hardware to the pixmap in memory. You will not see anything happening on the screen but the image will be building in memory. Make sure the MacVision Preferences are set correctly before using this command.
~SB~MacVision¬ Preferences╔:~SB~
Here is where you will set all the options relating to MacVision. ~SB~Use Modem Port~SB~ and ~SB~Use Printer Port~SB~ tell Vision Lab where the MacVision hardware is connected. ~SB~Use 512 X 342 Scanning~SB~ and ~SB~Use 320 X 240 Scanning~SB~ tell Vision Lab which size image to record or Halftone. ~SB~Use 4 Bits (16 gray levels)~SB~ and ~SB~Use 8 Bits (256 gray levels)~SB~ tell Vision Lab how to save the MacVision data. Depending upon the quality of the video signal being recorded you may find that moving from 8 to 4 bits does not change the image enough to warrant the use of all that extra disk space. If the ~SB~Use MacVision¬╒s Adjust~SB~ check box is checked then you will get the standard MacVision adjust display instead of the histogram. Note that the standard display is not available on Macintoshes with large screens.
