400 5.6 question

Hi guys:
Bought my wife the 400 f5.6 for Christmas. She also has Canon 2X and Tamron 1.4X TCs. She'll be using the 400 on her 30D.
Wondering if anyone with experience using that combination (30D + 400 5.6) with those TCs might post their comments on how they have fared.

Thanks,
Jim

I think you will lose auto focus.

bryno74 wrote in post #2454838
I think you will lose auto focus.

Certainly will with the Canon. The Tamron would be ok if it is the cheap one that does not report back to the Camera. Can always use the tape trick for af.

The 400 F/5.6L does not take kindly to TC's. The 1.4 is doable, the 2x is out of the question imo

I was think about getting the 400mm 5.6 for surfing with a 1.4 tele, so are you guys saying that the IQ loss sint worth it?

ChrisBlaze wrote in post #2455000
I was think about getting the 400mm 5.6 for surfing with a 1.4 tele, so are you guys saying that the IQ loss sint worth it?

You can get fair results with this combo but you need good light.
This one was handheld with the 1.4 tc (used the tape trick to af)

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thats a darn good effort RoyC and a great shot for the combo.
Rob.

I've used the 400 5.6L with a Tamron mc4 1.4x TC. The image quality is decent, but
not as good as without. Also the auto focus speed is not as fast, but still usable.

Pied-billed Grebe

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so with my Xti I would have to do the tape trick to get the autofocus to work.