spinworkxroy
New Member
Sometimes 3rd party TC can give af at f/8, even though canon say cannot and canon TC also cannot. Happens for other canon body too.
Kenko will depend…like i mentioned..i used the same Kenko 1.4TC with the same Tamron lens a 300mm f5.6 (which makes it f8 or is it 6.3?)…on my 60D..it wont even focus at all..only manual…however when i tested on the 5D3..i was expecting the same thing but i was surprised that it AF without problems…of course not as fast but it will still focus pretty decently with enough light..it's not something i will use but at least it works...