I need to know if a 300/2.8 will function in full AF mode (mounted on a 40D or the inevitable 12.2 MPX 1.6X 50D) when stacked with a 1.4 and a 2.0 TC? Does anyone have experience with that combo?
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I need to know if a 300/2.8 will function in full AF mode (mounted on a 40D or the inevitable 12.2 MPX 1.6X 50D) when stacked with a 1.4 and a 2.0 TC? Does anyone have experience with that combo?
Stacked converters did not work with he 30D on the 300mmf2.8L and I'm sure it will not on the 40D......
