looking for an extender that is compatible with my Can EF75-300mm f4-5.6 IS USM lens

[MMStar]

I have a Canon 5d mii camera and had purchased a Canon EF lens : 75-300mm : 4-5.6 IS USM many years ago for a Canon t90 and would like to get an extender (tc) for the DSLR and lens. I have looked at the compatibility charts for the Canon 2x and 1.4 tc but I do not see this particular lens listed. Can anyone suggest where to find out whether or not I can purchase a tc for this lens or not.. Thanks much ~mmstar

[cicopo]

This is the link to the most informative info I've seen

http://photography-on-the.net/forum/showthread.php?t=41922

I don't think that lens can be used with a TC but even if it can it's going to kill your AF performance.

[jGordon24]

You can not use the Canon extenders at all as they will not fit

[hsbn]

like Jgordon24 said, you cannot use Canon TC. But you can use third party one like ProOptics or Kenko. But your camera AF may not working.

[ebiggs1]

Forget it. Don't do it. It is a bad idea.