Lenstip has tested it: http://www.lenstip.com/2000-news-Canon_E...eview.html
The most lovable part of the review is this picture though:
![[Image: 67300_can40_wstep.jpg]](http://www.lenstip.com/upload2/67300_can40_wstep.jpg)
<img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />
They say the vignetting is "huge" but it's definitely not 24/1.4L "huge".
The most lovable part of the review is this picture though:
![[Image: 67300_can40_wstep.jpg]](http://www.lenstip.com/upload2/67300_can40_wstep.jpg)
<img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
![Big Grin Big Grin](https://forum.opticallimits.com/images/smilies/biggrin.png)
They say the vignetting is "huge" but it's definitely not 24/1.4L "huge".