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

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Thread started 12 Apr 2010 (Monday) 10:49   
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2004ep3hatch
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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 :)

IMAGE: http://i8.photobucket.com/albums/a3/alpine192/birds%204-09-2010/goodbirds4-11-20102-1.jpg

Post #1, Apr 12, 2010 10:49:32


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Dmab
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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.

Post #2, Apr 12, 2010 13:26:40


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2004ep3hatch
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Dmab wrote in post #9980656external 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.

Post #3, Apr 12, 2010 13:31:59


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Canis_Majoris
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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.

Post #4, Apr 12, 2010 14:30:36




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TeamSpeed
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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.

Post #5, Apr 12, 2010 16:03:56


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sue.t
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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

Post #6, Apr 12, 2010 20:40:06


sue t.
10-22, 24-105 & 100-400 partnered with a 7D, plus a G12 & SX280 and now a Leica V-LUX 4
Living in Yukon and travel to Alaska -- [URL="http://YukonSigh​ts.ca"]http://YukonSights.ca/external link

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xarqi
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2004ep3hatch wrote in post #9980679external 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.

Post #7, Apr 12, 2010 21:52:17




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Cham_001
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sue.t wrote in post #9983181external 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!

Post #8, Apr 12, 2010 22:16:59


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2004ep3hatch
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[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.

Post #9, Apr 12, 2010 23:05:43


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2004ep3hatch
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xarqi wrote in post #9983556external 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.

Post #10, Apr 12, 2010 23:06:10


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sue.t
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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.

Post #11, Apr 19, 2010 22:19:31


sue t.
10-22, 24-105 & 100-400 partnered with a 7D, plus a G12 & SX280 and now a Leica V-LUX 4
Living in Yukon and travel to Alaska -- [URL="http://YukonSigh​ts.ca"]http://YukonSights.ca/external link

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JHutch
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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

Post #12, Apr 19, 2010 23:32:17 as a reply to sue.t's post 1 hour earlier.


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