Here's a general setup to determine if your PMW-EX1 camera has the vignette issue:

1. Set the EX1 for FULL manual control.

2. Set the cameras focus at infinity. (furthest focus range).

3. Position your camera on a tripod with "Steady Shot" OFF (OIS OFF).

4. Aim your camera on a white or neutral color wall (not black).

5. Start with camera at full wide (5.8mm) and zoom all the way in and verify
no objects come into your view throughout the zoom travel.

6. Do not over expose the image. Actually intentionally under expose the
image.

7. Now with your camera set to wide 5.8mm focal length, start recording.

8. While recording SLOWLY zoom up to 40mm. The problem is known to be
seen in the 10mm - 25mm range. So SLOWY zoom through this focal
range.

9. Import your footage into your computer and look for the vignetting issue.
IMPORTANT: When viewed on a monitor while recording, you may not see
the issue due to the monitors overscan. View your capture footage on your computer.

Please direct any test results or other related replies to this thread:

http://www.dvinfo.net/conf/showthread.php?t=108433

Thanks,