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FORUMS Photography Talk by Genre Motorsports Talk 
Thread started 22 Sep 2012 (Saturday) 13:30
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Is the 1Div fussy with what lens is used?

 
colintf
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Sep 22, 2012 13:30 |  #1

Recently picked up a 1div and have used it at two race meets now.

I usually use my 5d3 and 70-200f2.8ii and are happy with most of its shots

As the 1div is new to me, I am loathed to use the 70-200f2.8 on it yet as I am still very much learning, and dont want to end up with mainly bad shots so I have tried : -

100-400, and not been very impressed

70-200f4 + 1.4 extenderiii - reasonably impressed
70-200f4 better still

is this as to be expected??

:cool:




  
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Bicknell55
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Sep 22, 2012 21:25 |  #2

What do you mean by bad shots?

Realize the f/4 + 1.4x = f/5.6...not the fastest when it comes to AF. Same holds true for the 100-400 at longer focal lengths.


If you can't fix it with a hammer you've got an electrical problem.
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colintf
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Sep 23, 2012 14:41 as a reply to  @ Bicknell55's post |  #3

poorly focused is the main problem, when taking a moving object at some distance :cool:




  
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Bicknell55
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Sep 23, 2012 15:30 |  #4

I don't have a MkIV but I assume it has a tracking sensitivity, similar to the 7D. What are you set at?


If you can't fix it with a hammer you've got an electrical problem.
http://www.brentsmithp​hotography.com/ (external link)http://brentsmith.smug​mug.com/ (external link)

  
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colintf
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Sep 24, 2012 06:09 |  #5

Bicknell55 wrote in post #15032251 (external link)
I don't have a MkIV but I assume it has a tracking sensitivity, similar to the 7D. What are you set at?


I cant remember, what would you recommend?

Many thanks
:cool:




  
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GSH
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Sep 25, 2012 10:51 |  #6

colintf wrote in post #15034746 (external link)
I cant remember, what would you recommend?

Many thanks
:cool:

1 notch below half way for me. Same as my old MKIIN and my 7D.


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colintf
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Sep 25, 2012 14:52 |  #7

GSH wrote in post #15040291 (external link)
1 notch below half way for me. Same as my old MKIIN and my 7D.

mine was on half way, so will try that - many thanks :cool:




  
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philwillmedia
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Sep 27, 2012 05:49 |  #8

Post some examples.
I wouldn't mind betting you don't understand the parrallax effect


Regards, Phil
2013/14 CAMS Gold Accredited Photographer | 2010 & 2011 V8 Supercars Aust. Accredited Photographer | 2008, '09, '10 South Aus. Rally Photographer of the Year | Catch Fence Photos - 2009 Photo of the Year (external link)Finallist - 2014 NT Media Awards
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JohnStewart
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Sep 27, 2012 07:19 |  #9

I've don't have any real issues using the 100-400 as long as there is a big enough target and decent light/contrast at the front of the car to focus accurately.

If the subject is moving quickly towards you, is only filling 5 - 10% of the frame and you are at 400mm and then you are rarely going to get fantastic results as you'll be at the mercy of camera shake, distortion due to heat haze coming off the tarmac and any minute errors in focussing accuracy (your lens might need micro adjusting) will be maximised.




  
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colintf
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Sep 27, 2012 12:58 |  #10

philwillmedia wrote in post #15048879 (external link)
Post some examples.
I wouldn't mind betting you don't understand the parrallax effect

never heard of it :cool:




  
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colintf
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Sep 27, 2012 12:58 |  #11

JohnStewart wrote in post #15049056 (external link)
I've don't have any real issues using the 100-400 as long as there is a big enough target and decent light/contrast at the front of the car to focus accurately.

If the subject is moving quickly towards you, is only filling 5 - 10% of the frame and you are at 400mm and then you are rarely going to get fantastic results as you'll be at the mercy of camera shake, distortion due to heat haze coming off the tarmac and any minute errors in focussing accuracy (your lens might need micro adjusting) will be maximised.

thanks for the tips :cool:




  
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philwillmedia
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Sep 27, 2012 16:59 |  #12

colintf wrote in post #15050330 (external link)
never heard of it :cool:

It's the laws of physics at work.


Regards, Phil
2013/14 CAMS Gold Accredited Photographer | 2010 & 2011 V8 Supercars Aust. Accredited Photographer | 2008, '09, '10 South Aus. Rally Photographer of the Year | Catch Fence Photos - 2009 Photo of the Year (external link)Finallist - 2014 NT Media Awards
"A bad day at the race track is better than a good day in the office" | www.freewebs.com/philw​illmedia (external link)

  
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Is the 1Div fussy with what lens is used?
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