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Thread started 21 Jul 2010 (Wednesday) 00:53
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Blurry photos due to auto focus?

 
J.Litton
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Jul 21, 2010 00:53 |  #1

I currently have the gear listed below. And while taking pictures, I notice only about 20% of the time the pictures are focused on the correct area. Most of the time it is either to close or focued on something else.

Could this be due to the fact it is on automatic focus and not manual selection?

Thanks


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philwillmedia
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Jul 21, 2010 00:55 |  #2

Post a problem photo with EXIF data intact.
It's pure speculation otherwise.


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paradiddleluke
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Jul 21, 2010 01:39 |  #3

what phil said stands, however it is suggested that you choose the focus point YOU want the camera to focus on, otherwise it may not choose exactly what you want and could be slightly off.


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MGiddings ­ Photography
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Jul 21, 2010 02:58 |  #4

Give us a photo NothingRemains10......​......


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JeffreyG
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Jul 21, 2010 04:40 |  #5

NothingRemains10 wrote in post #10575205 (external link)
I currently have the gear listed below. And while taking pictures, I notice only about 20% of the time the pictures are focused on the correct area. Most of the time it is either to close or focued on something else.

Could this be due to the fact it is on automatic focus and not manual selection?

Thanks

If you are not deliberately selecting the focus point to use and then placing that focus point over an area with contrast on the subject where you want the focus to be, your results will be a crap shoot.


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hpulley
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Jul 21, 2010 06:50 |  #6

Using all AF points on a Rebel is definitely a crap shoot. It will find the closest most contrasty thing to focus on and there is a good chance that isn't what you wanted.


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egordon99
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Jul 21, 2010 07:01 |  #7

NothingRemains10 wrote in post #10575205 (external link)
I currently have the gear listed below. And while taking pictures, I notice only about 20% of the time the pictures are focused on the correct area. Most of the time it is either to close or focued on something else.

Could this be due to the fact it is on automatic focus and not manual selection?

Thanks

Absolutely. How is the camera supposed to know what your subject is? The AF sensors don't really "see" anything except phase differences in the light. You NEED to explicitly select the ONE focus point that is closest to your intended subject.




  
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egordon99
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Jul 21, 2010 07:02 |  #8

JeffreyG wrote in post #10575700 (external link)
If you are not deliberately selecting the focus point to use and then placing that focus point over an area with contrast on the subject where you want the focus to be, your results will be a crap shoot.

Great word choice!




  
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bauerman
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Jul 21, 2010 09:26 |  #9

They should have Best Buy salesman set all cameras to center focusing point before the customers are allowed to leave the store with the camera body...




  
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Player9
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Jul 21, 2010 11:23 |  #10

bauerman wrote in post #10576613 (external link)
They should have Best Buy salesman set all cameras to center focusing point before the customers are allowed to leave the store with the camera body...

That would probably make the situation worse. The bottom line is that the user needs to take control of the camera, the lighting, and the photoshopping, and basically assume full responsibility for getting their own awesome photos. They can't rely upon the camera to think. Unfortunately, a lot of folks (especially a large segment of the group that buys their SLRs at Best Buy instead of a camera store) moving up from P&S cameras have essentially had their thinking retarded by use of cameras that don't allow for any user input at all. It can be a rude awakening, but, once they make it through and get their attitude readjusted, they will learn how to make the awesome photographs that they need.


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bauerman
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Jul 21, 2010 13:56 |  #11

My post regarding Best Buy was tongue in cheek....

I agree with your assertions though that people needing to take full responsibility for producing the level of photography that they are trying to achieve.




  
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highflyer_gfs
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Jul 22, 2010 00:41 |  #12

If everything else fails, read the camera instructions...


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Veemac
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Jul 22, 2010 02:59 |  #13

JeffreyG wrote in post #10575700 (external link)
If you are not deliberately selecting the focus point to use and then placing that focus point over an area with contrast on the subject where you want the focus to be, your results will be a crap shoot.

What JeffreyG (and several others) said. Using Auto AF point selection is letting the camera choose what to focus on instead of YOU choosing what you want to focus on.


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killwilly
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Jul 22, 2010 03:56 as a reply to  @ Veemac's post |  #14

When I first had my 450D I aways used multi focus points, but since I started using centre focusing, my shots have improved enormously.


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oyster_photos
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Jul 22, 2010 08:10 |  #15

killwilly wrote in post #10581806 (external link)
When I first had my 450D I aways used multi focus points, but since I started using centre focusing, my shots have improved enormously.

+1 !


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Blurry photos due to auto focus?
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