Has anyone tried any of the cheaper IR filters that are found on ebay? There's the suntec ones as well as an unbranded one:
http://cgi.ebay.com …ZWDVWQQrdZ1QQcmdZViewItem![]()
At about 1/4 of a Hoya R72, how do they perform? Also, what cut off wavelength would you recommend for general landscapes?
I'm planning to use my 17-40 for some IR shots, there's a gel holder at the back of the lens are there IR gels I could use instead?
thanks!

