I have 7D Mk II body should i go for 100-400mm is i lens with 1.4x extender.

[kuntalbakhade]

hello everyone, i have 7D Mk II. Thinking to buy 100-400mm is i lens with 1.4x MKIII extender. i'm not sure about the results i shoot birds & wildlife. does the combination works good? i would to llike to know about the autofocus, sharpness, picture details. Thanks in advance

[TTMartin]

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@RobertTheFat wrote:

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@Waddizzle wrote:

"Get the version II of the 100-400!!!"

I cannot compare the versions, but most everyone seems to quite excited about version II. 

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And the 1.4 extender is up to version III now, isn't it?

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Yes, the extenders are now version III which are supposed to optimize focus performance when used with the newest generation of L lenses.

[kuntalbakhade]

ThanksTTMARTIN for sharing.

[ebiggs1]

I have to side with cicopo on his suggestion of the Sigma 150-600mm, or the Tamron 150-600mm vs the 100-400mm and a 1.4x.  Especially if you are talking the first version.

The slight advantage the Tammy gives you is weather sealing which the Siggy C doesn't have.  Plus I am not a tele extender fan at all.  I have six or seven of them and rarely use any of them.

IMHO, the 100-400 version one doesn't have the IQ to surrender to a converter.  I never tried it on the second version so no comment except I probably wouldn't do it.

The possible exceptions for me as to which lenses can handle the 1.4x are the ef 70-200mm f2.8L II and the ef 300mm f4L IS. I have found these to produce very good results.  Again, IMHO, no lens handles the 2x.  Just my 2 cents and worth every penny.

[cicopo]

Since I don't do much tele static stuff here are a couple of recent action shots from a 1D4 / Sigma 150-600 C (hand held, planes flying well over 100 MPH. All shot at 1/500 for prop blur.

And this one is a crop from 1 shot at the full 600 mm. The autographs on the wing are from the pilots of the Snowbirds plus Chris Hadfield. (full frame first to show how deep a crop.

[TTMartin]

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@cicopo wrote:

Since I don't do much tele static stuff here are a couple of recent action shots from a 1D4 / Sigma 150-600 C  

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If you can only afford the EF 100-400 L IS version 1, I would recommend you get the Sigma 150-600 C instead.

However, if you can afford the Canon EF 100-400 L IS II and the Canon EF Extender 1.4X  III that is the way to go.