Steve oliphant
Member
- Messages
- 17
- Reaction score
- 11
These Teleconverters are the same as the old Tamron 1.4x converter the MC4's will work on the 100-400 L is lens
auto focus and IS will work .The converter is missing the two pinns to turn off the AF and yes it works on the rebel XT because i have that camera and the XSi and the Canon 7D ,in low light it will hunt ,you do loose a stop of light.Super sharp and on a APS C crop on my 100-400 it's 896mm, i have house wren shots that are awesome.
auto focus and IS will work .The converter is missing the two pinns to turn off the AF and yes it works on the rebel XT because i have that camera and the XSi and the Canon 7D ,in low light it will hunt ,you do loose a stop of light.Super sharp and on a APS C crop on my 100-400 it's 896mm, i have house wren shots that are awesome.