I shoot a crop camera and really like the 135L + 1.4x tc ii. I've had it almost a month.

Some samples:

f/8


2012_04_08_4170_upd by dthrog00, on Flickr

f/2.8


2012_04_01_3839 by dthrog00, on Flickr

f/4


2012_03_28_3583 by dthrog00, on Flickr

The ones I've taken do date are at:

http://www.flickr.com/photos/6825585...teleconverter/

Dave