Canon 400mm f5.6

[Alioff]

Would canon 7D Mark ii's auto focus work with Canon 400mm f5.6 when 1.4x extender attached? I know the autofocus will work with 1d series when 1.4x extender attached, I was wondering if it works with the newer SLRs.

[diverhank · Accepted solution]

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@Alioff wrote:

Would canon 7D Mark ii's auto focus work with Canon 400mm f5.6 when 1.4x extender attached? I know the autofocus will work with 1d series when 1.4x extender attached, I was wondering if it works with the newer SLRs.

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Yes it will work but you will have only the center point plus 4 assists.  As far as I know only the 80D, 5DIII, 7DII and the 1D series will AF at f/8

[ebiggs1 · Accepted solution]

"Would canon 7D Mark ii's auto focus work with Canon 400mm f5.6 when 1.4x extender attached?"

It may 'work' but you won't like it.  It's not a great idea.   IMHO, of course.

[TTMartin · Accepted solution]

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@Alioff wrote:

Would canon 7D Mark ii's auto focus work with Canon 400mm f5.6 when 1.4x extender attached? I know the autofocus will work with 1d series when 1.4x extender attached, I was wondering if it works with the newer SLRs.

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Taken Tuesday with the 7D Mk II and EF 100-400 L IS II and 1.4X TC at 560mm. The AF worked fine.

As already mentioned you are limited to center spot, center AF point, or center AF point with 4 AF expansion points.

[Alioff · Accepted solution]

Thank you. I was deciding between 7d mark ii and a used 1d mark4.

[kvbarkley · Accepted solution]

prime vs zoom does not matter, what matters is f/5.6 at 400 mm.

[TTMartin · Accepted solution]

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@Alioff wrote:
I meant the prime lens, 400mmf5.6 and not the 100-400. I have the lens, and shopping for a new camera

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The 7D Mk II will AF at f/8. Regardless if it is the EF 400mm f/5.6L with a 1.4X TC or the EF 100-400mm L IS II with a 1.4X TC.

[TTMartin · Accepted solution]

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@Alioff wrote:
Thank you. I was deciding between 7d mark ii and a used 1d mark4.

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With the 1D Mk IV f/8 is only with a single horizontal AF point. f/8 AF is not cross type or have the 4 expansion points like the 7D Mk II. 

[ebiggs1 · Accepted solution]

I guess you can see from sample it is soft and likely what you can expect.  With super teles the keeper rate is very important because as focal length increases, so do all the issues.  Adding an extender just adds more.

BTW ........

If you are seriously considering a decision between the 1D Mk II and a 1D Mk IV, you need to consider all the specs.  The Mk IV may not have as many AF points at f8 but in virtually every other spec it is the better camera.  But it does depend on what you intend using it for.

The Mk IV with its larger sensor with larger pixels is hard to over look. Much longer battery life and on and on.  There is no way I would have a 7D Mk II over a Mk IV if it was my only camera.  

[TTMartin · Accepted solution]

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@Alioff wrote:
I have a 5d marking now and looking to buy a crop sensor camera. Used 1d mark 4 is about the same price of a new 7d markii. This is why I am debating between the two. I like wild life photography.

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The 7D Mk II is a better choice over the 1D Mk IV. From the 7D Mk II's better AF system, to a greater crop factor, the 7D Mk II has the same high ISO perfromance, the same batteries as the 5D Mk II or Mk III, same degree of weather sealing as the 1D Mk IV, the choice of using a battery grip to give you similar ergonomics to the 1D camera, or the choice to go without the grip for a smaller more compact camera.

[jrhoffman75]

Very nice.

[Waddizzle]

"Catching bees does get easier with practice and with a camera with good focusing ability (like a 1D or 7DII) it is a lot easier...ever since I got the 7DII, catching bees has become fairly routine.  I also use the EF 100mm f/2.8L macro.  Below is one I recently got:"

Nice shots.  I've been looking for yellow jackets.  But, I am getting better at this.. 

For some reason, I used the T5 this morning, 1/800, f/8, ISO-250, EF 100 f/2.8L macro

The lens is razor sharp on every body that I've used it on.

[Alioff]

Nice pix, thanks for sharing.

[ebiggs1]

"Nice pix, thanks for sharing."

Yes it is. Very nice.

[ebiggs1]

You two guys are exactly what comes from readers and not users.  You heard this, you read this.  Thank heaven for Google, Huh?  IMHO, of course, as always,

[Waddizzle]

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@ebiggs1 wrote:

You two guys are exactly what comes from readers and not users.  You heard this, you read this.  Thank heaven for Google, Huh?  IMHO, of course, as always,

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Once again, your false assumptions are your undoing, IMHO.  I own a 1D Mark IV, Ernie.  One of my sons has a 7D Mark II.

[ebiggs1]

" I own a 1D Mark IV, Ernie."

Right!

[Alioff · Accepted solution]

Thank you for this great article. Right on the money.

[jrhoffman75]

I have found that the pixels on the Mark IV are so nice that a 1.3 crop to get same reach as APS-C is not an issue. I rarely shoot where high ISO noise becomes a problem for me.

Horses for courses.

Plus, like Ernie says - it just feels great.

[Waddizzle]

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@jrhoffman75 wrote:

I have found that the pixels on the Mark IV are so nice that a 1.3 crop to get same reach as APS-C is not an issue. I rarely shoot where high ISO noise becomes a problem for me.

Horses for courses.

Plus, like Ernie says - it just feels great.

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Yes, they are very nice.  They are larger than those on a 7D Mark II, except a 7D Mark II will have more pixels when you crop the APS-H shot down to an APS-C angle of view.  The Mark IV would starting off at 16MP, which is being cropped down to the size of an image that the Mark II produces at 20MP.

The above shot was cropped way too much.  But, the colors and contrast are still excellent.