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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 12 Apr 2010 (Monday) 10:49
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The 7D's spot AF works great, picture inside

 
2004ep3hatch
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Apr 12, 2010 10:49 |  #1

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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Dmab
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Apr 12, 2010 13:26 |  #2

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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2004ep3hatch
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Apr 12, 2010 13:31 |  #3

Dmab wrote in post #9980656 (external link)
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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Canis_Majoris
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Apr 12, 2010 14:30 |  #4

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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Apr 12, 2010 16:03 |  #5

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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sue.t
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Apr 12, 2010 20:40 |  #6

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

IMAGE: http://suethomas.ca/images/Birds/20100410_EagleRathtrevor_0433.jpg

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

IMAGE: http://suethomas.ca/images/Birds/20100410_EagleRathtrevor_0441.jpg

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xarqi
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Apr 12, 2010 21:52 |  #7

2004ep3hatch wrote in post #9980679 (external link)
"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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Cham_001
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Apr 12, 2010 22:16 |  #8

sue.t wrote in post #9983181 (external link)
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 ...

QUOTED IMAGE

Sue, this is magificent, a superb shot!
bw!


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2004ep3hatch
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Apr 12, 2010 23:05 |  #9

[QUOTE=Cham_001;998370​1]Sue, this is magificent, a superb shot!
bw!

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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2004ep3hatch
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Apr 12, 2010 23:06 |  #10

xarqi wrote in post #9983556 (external link)
"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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sue.t
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Apr 19, 2010 22:19 |  #11

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

IMAGE: http://suethomas.ca/images/Birds/20100419_Hummingbird_0084.jpg

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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JHutch
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Apr 19, 2010 23:32 as a reply to  @ sue.t's post |  #12

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

IMAGE: http://farm5.static.flickr.com/4063/4536523179_78e956fcf8_b.jpg

IMAGE: http://farm5.static.flickr.com/4021/4537147586_d0a41173f7_b.jpg

And I'm not sure if this is a 100% crop, but it's a crop.
IMAGE: http://farm5.static.flickr.com/4026/4536514947_2930c20d66_o.jpg

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The 7D's spot AF works great, picture inside
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