Decent fot the moneyApril 10, 2007 7 out of 7 found this review helpful
Does not give you the feel of 2 x zoom but it does help. If you are using an image stabilized lens you will lose the Auto Focus abilities of the IS lens
Good image quality poor auto focusApril 7, 2007 7 out of 7 found this review helpful
I use this teleconverter with the Canon rebel XTI and the Canon EF 75-300 f4-5.6 III USM lens. The image quality is fine but the autofocus is poor. The lens (with the teleconverter) focuses very slowly at focal lengths under 270mm and at full 300mm it will not autofocus at all. Manual focus works just fine.