Eliminating Vignetting

[nikonuser]

I have a Sigma 100-300 which tends to vignette how do I overcome this in post processing other than cropping I'm using CS3.
Thanks
Dave

 

[tiler65]

Open Image> Go to Filter>Lens correction>and on the dialogue box you will have a vignette section. give the mid point some ++++++ and the amount then you should see the dark corners disappear.

 

[nikonuser]

Many Thanks Tom, appreciate your help and quick reply, will give it a go.
Cheers
Dave