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Old 12th of April 2010 (Mon)   #1
2004ep3hatch
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Default The 7D's spot AF works great, picture inside

Well reading about how well the accuracy is on the 7d af points, I went out and got this great picture of a Wood Thrush. If I'm wrong please correct me . I was curious about how well it can focus on specific things.

He was in the bushes across the road and I got a great picture. I was using a EF70-200L with 2x converter so quality is not great but still i was able to lock on through the bushes and maintain focus ans if i crop maybe 50% its a great picture to look at. I took 7 pictures all in focus.

This is a 100 cropped picture. Wish i had a 500mm lens now!

As you can see, all the branches around and the one that's in front of him on the backside. TheAF did job quite well

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Last edited by 2004ep3hatch : 12th of April 2010 (Mon) at 10:55.
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Old 12th of April 2010 (Mon)   #2
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Default Re: The 7D's spot AF works great, picture inside

I can't tell if this is tongue-in-cheek or not.
The photo quality is not great, but I can respect that the 7D was able to focus in on exactly what you wanted.
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Old 12th of April 2010 (Mon)   #3
2004ep3hatch
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Default Re: The 7D's spot AF works great, picture inside

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Originally Posted by Dmab View Post
I can't tell if this is tongue-in-cheek or not.
The photo quality is not great, but I can respect that the 7D was able to focus in on exactly what you wanted.
I agree with that about the photo quality as i was saying. I just wanted to point out i hit the target in a very cluttered spot. If i look at the original its not to bad. deff printable quality. But that's what a 2x converter dose to you lol.

"tongue in cheek" Whats that mean? Sorry If i Don't know.
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Old 12th of April 2010 (Mon)   #4
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Default Re: The 7D's spot AF works great, picture inside

Lol, when you take into account that you used the 2x TC and this is a 100% crop, it isn't that bad at all all things considered.
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Old 12th of April 2010 (Mon)   #5
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Default Re: The 7D's spot AF works great, picture inside

To me, it looks like branches closer to the OP got into the way and diffracted the light around. This is what I get when I shoot through branches onto a bird. So if this was through branches with a TC, that isn't bad at all.
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Old 12th of April 2010 (Mon)   #6
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Default Re: The 7D's spot AF works great, picture inside

here's a shot with my 7D through clutter, using a 100-400 and Spot AF.



It was also an extremely windy day so the "clutter" kept shifting around ...

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Old 12th of April 2010 (Mon)   #7
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Default Re: The 7D's spot AF works great, picture inside

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Originally Posted by 2004ep3hatch View Post
"tongue in cheek" Whats that mean? Sorry If i Don't know.
"Tongue-in-cheek" is an English idiomatic phrase meaning that something is said ironically or in jest, in other words, not to be taken seriously.
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Old 12th of April 2010 (Mon)   #8
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Default Re: The 7D's spot AF works great, picture inside

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Originally Posted by sue.t View Post
here's a shot with my 7D through clutter, using a 100-400 and Spot AF.

( 1st photo deleted )

It was also an extremely windy day so the "clutter" kept shifting around ...

Sue, this is magificent, a superb shot!
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Old 12th of April 2010 (Mon)   #9
2004ep3hatch
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Default Re: The 7D's spot AF works great, picture inside

[quote=Cham_001;9983701]Sue, this is magificent, a superb shot!


I made a comment earlier, awesome shot! I need a super tele now or the bigmos. I hope the quality would be better then the setup i'm using now.
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Old 12th of April 2010 (Mon)   #10
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Default Re: The 7D's spot AF works great, picture inside

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Originally Posted by xarqi View Post
"Tongue-in-cheek" is an English idiomatic phrase meaning that something is said ironically or in jest, in other words, not to be taken seriously.
Ok lol, was not sure.
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Old 19th of April 2010 (Mon)   #11
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Default Re: The 7D's spot AF works great, picture inside

Okay ... I have a better example of the 7D's capabilities with Spot AF:



I was impressed with how the 7D and 100-400 managed to sort through the twigs and branches (and cobwebs) to get this very small nest.
It's maybe 3" diameter.
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Old 19th of April 2010 (Mon)   #12
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Default Re: The 7D's spot AF works great, picture inside

Here are a few examples of spot focus from my 7D with a 35L. I'm pretty satisfied





And I'm not sure if this is a 100% crop, but it's a crop.
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