filter system for sigma 10-20

[jc450d]

hi know this has been asked before as i've searched here and googled as well.So far the Lee system is the only system that will not cause vignetting @ 10mm.Is this correct?Is there a cheaper system?Don't want to buy and find it wont work.Some are happy using 12mm but i want to use the full range.
thanks in advance

 

[TCR4x4]

Cokin do a wide angle holder that doesnt seem to vignette on the 10-20. Getting one on the other hand may be more interesting.

 

[Craikeybaby]

I imagine that other 100mm systems would behave the same as the Lee system, such as the hitech.

 

[speed addicted]

I use a Cokin filter holder (not the wide angle one) on mine. You can go to around 12mm before it becomes a problem, or if you're rough like me you can hacksaw off the first slot and live with two slots instead of three.
They're only £10ish so having two isn't a major issue.