How to make a f4 lens AF with a 2X extender on non-1D body

Started Oct 12, 2010 | Discussions thread
GtoJon Veteran Member • Posts: 3,553
Tamron 2X C-AF1 BBAR MC7 works perfect on my 5DII

I just tried my 5DII with the Tamron 2X converter & it works great with the 24-105L lens. Not scientific, but low light handheld autofocus wide open. The focus was fast to aquire at 24mm & 105mm. Below are samples that have only had whit balance adjustment.

2x @ 105mm(210), f4.0, ISO 3200, 1/60s

2x @ 105mm(210), f5.6, ISO 3200, 1/25s

Hope this helps somebody, Cheers
-- GtoJon -
Taken any photographs lately?

 GtoJon's gear list:GtoJon's gear list
Sigma 120-300mm F2.8 EX DG OS HSM Canon EF 24-105mm f/4L IS USM Sigma 12-24mm F4.5-5.6 II DG HSM Olympus M.Zuiko Digital 45mm F1.8 Panasonic Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH OIS +7 more
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