CompuServe Thread

#Digi-View

2 messages in this thread
#104690From: Vince MacdonaldJan 22, 1988 11:13 AM
Mike, What lens are you using? Some zoom lenses have "barrel distortion" at the shortest focal length (sides of a square bulge out) and "pincushion distortion" at the longest focal length (sides of a square curve in). If that's your problem, it should minimize at the centre of the zoom range. That's assuming you're digitizing from flat artwork. If you're trying to digitize images from a monitor, you'll get the effect you describe with any lens if the camera is too close to the screen. Vince
#104692From: Mike Wilmer <PHOTOF>Jan 22, 1988 12:26 PM
Vince, Thanks for your response. I guess I wasn't very clear. I left another message that gives a better description of my problem and potential solution. Briefly, I'm getting distortion throughout the image but it is most noticeable in the verticals. It isn't consistant which leads me to believe that there is a power problem in the parallel port. I hope to have a new gender changer in a few days from Amicore, Inc., which has a supplemental power supply attached. That should stabilize the image going into the 500. If that doesn't do it, I understand that I might have to replace the 8520 (parellel port) chip. I've been told that it is manufactured by Commodore and tends to be a bit flakey. Incidentally, from what I could see by comparing the results from another 500 and a 2000, there can be a tremendous variation in the performance of the parallel port on these machines. Amicore tells me that their gender changer has a built in regulator to keep the signal constant. I wonder how many other problems like this will crop up concerning the 500? Mike