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Thread started 31 Aug 2009 (Monday) 14:34
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7D (Rumored to have) bad Autofocus and back focus.

 
CyberDyneSystems
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Aug 31, 2009 16:12 as a reply to  @ post 8556704 |  #16

Really?


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moeronn
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Aug 31, 2009 16:19 |  #17

That's more of a cute little sea kitten than a fish. It even has two tails.

FWIW - sea kittens is PETA nomenclature to save fish from our mouths. I don't think it's working.


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apersson850
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Aug 31, 2009 16:21 as a reply to  @ CyberDyneSystems's post |  #18

So eventually the 7D became FF - Fishy Feet


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Canonswhitelensesrule
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Aug 31, 2009 16:24 |  #19

FlyingPhotog wrote in post #8556593 (external link)
That tears it...I'm taking up painting.

Of course my brushes won't quite reach the canvas fully and I'll probably use too much thinner which will keep my brush strokes from being sharp.

:lol::lol::lol:

Don't forget to buy "L" brushes, and make sure they have the RED stripe on them!:cool:


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zaathrus
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Aug 31, 2009 17:09 |  #20

Oh this is brilliant! You just know that someone will take this as being gospel truth!


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TeamSpeed
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Aug 31, 2009 17:21 |  #21

I am so happy you posted this. I was just testing my 7D on typical moving target that we had as a MKIII test subject for its AF issues. The MKIII had no problems at all, in a burst, 100% were all in focus, but the 7D is only resulting in about a 20% keeper rate.

AI Servo is just having a problem with the "direct at you" action we had going on with our test subject. This does not bode well for the new offering from Canon. :(


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TeamSpeed
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Aug 31, 2009 17:22 |  #22

Oh, by the way here is one out of several test frames, not sure why the 7D has such an issue?


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FlyingPhotog
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Aug 31, 2009 17:23 |  #23

TeamSpeed wrote in post #8557017 (external link)
Oh, by the way here is one out of several test frames, not sure why the 7D has such an issue?

ROFL...

First bw! 7D Post!!


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eddiebrown
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Aug 31, 2009 17:40 |  #24

Canonswhitelensesrule wrote in post #8556795 (external link)
Don't forget to buy "L" brushes, and make sure they have the RED stripe on them!:cool:

micro adjust paint too .




  
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gjl711
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Aug 31, 2009 17:42 |  #25

TeamSpeed wrote in post #8557017 (external link)
Oh, by the way here is one out of several test frames, not sure why the 7D has such an issue?

It's clear as day that the issue is total user error. First, all modern focus systems need a high contrast edge to pull in the focus. It's clear from the pic that all 19 of the focus points are tracking the low contrast sand. Second, I see that your from Indiana so clearly the is a Lake Michigan fresh water sea turtle and thus an endangered species. Viewing the EXIF data I noticed that you did not have the camera in "Endangered spiecies mode" Canon purpously defocuses the camera whenever an endangered species is photographed making it harder for illegal traders to identify the location thus saving the turtle. It's a new feature, a spin off of face detection so I'm not surprised you did not know about it. Lastly, it is a federal offense to even photograph the Indiana Dunes lake turtle when it is making a mad dash across the sand on it's way to the hot dog stand that I know is right behind you. Agents will be visiting you shortly I'm sure.


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Aug 31, 2009 17:51 |  #26

CyberDyneSystems wrote in post #8556184 (external link)
...it seems that a design problem in the "hyper burst" AF Engine is flawed, resulting in the 7D choosing to always focus on a subjects feet.

You heard it here first!

LOL

Foot-Priority AF --- an industry first!! :lol:


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Aug 31, 2009 18:22 |  #27

AngryCorgi wrote in post #8557125 (external link)
LOL

Foot-Priority AF --- an industry first!! :lol:

With 96-point odor metering. It can pinpoint the edge of a toenail on a person's foot amisdt a pile of dirty old socks, and other soiled clothing and trash laying around in your room!


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Kevin
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Aug 31, 2009 18:26 |  #28

I think I will wait until the 7D MkII comes out, hopefully all the bugs will be worked out by then.




  
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TeamSpeed
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Aug 31, 2009 18:37 |  #29

gjl711 wrote in post #8557090 (external link)
It's clear as day that the issue is total user error. First, all modern focus systems need a high contrast edge to pull in the focus. It's clear from the pic that all 19 of the focus points are tracking the low contrast sand. Second, I see that your from Indiana so clearly the is a Lake Michigan fresh water sea turtle and thus an endangered species. Viewing the EXIF data I noticed that you did not have the camera in "Endangered spiecies mode" Canon purpously defocuses the camera whenever an endangered species is photographed making it harder for illegal traders to identify the location thus saving the turtle. It's a new feature, a spin off of face detection so I'm not surprised you did not know about it. Lastly, it is a federal offense to even photograph the Indiana Dunes lake turtle when it is making a mad dash across the sand on it's way to the hot dog stand that I know is right behind you. Agents will be visiting you shortly I'm sure.

Portions of the sand was sparkly in the sun, that should have created at least 19 different contrasting areas to correspond to the 19 AF points. Not a single one was able to track, I think they were all arguing who would get focus, and since they are all equal, none of them were in focus. I hate quarrelsome AF points, they never seem to get along.

Actually this is our resident DNR agent in a turtle disguise, trying to catch poachers, so he was fine with this test, he is always game for a good AF test. He has always been a good sport for these kinds of activities, I always gun for him when we decide to do equipment testing. There is one particular company in the area specializing in turtle skin products he has been after, but I have been telling him it is really a shell corporation, and there are bigger fish to fry.

Also, the hot dog stand behind me was closed due to the hare race the day before, I didn't even try to do any AF tests with those boogers, they are just too fast.


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Tom ­ W
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Aug 31, 2009 19:26 |  #30

CyberDyneSystems wrote in post #8556184 (external link)
....it seems that a design problem in the "hyper burst" AF Engine is flawed, resulting in the 7D choosing to always focus on a subjects feet.

Could come in handy when using the fisheye lens. ;)


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