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Thread started 21 Sep 2010 (Tuesday) 04:37
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Sigma 120-300 f/2.8 EX OS

 
gabebalazs
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Jun 29, 2012 16:14 |  #2341

Jay T wrote in post #14649903 (external link)
I googled it and its a magnetic sensor that detects where the focus is at. The sigma 85mm f/1.4 is also known to have the same problem.

I see. Thanks Jay.


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Honey ­ Monster
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Jul 02, 2012 12:55 |  #2342

Here goes with my first photos posted to POTN of a red kite on the Black Isle in Scotland. I am still getting used to using this lens and getting to grips with PP, so I don't think these will match what others have got. Sky was just grey cloud - typical weather in Scotland when it's not raining or snowing. Both are at 600mm with Canon 2xTC III, ISO 800, 1/1000 f5.6.


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Honey ­ Monster
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Jul 02, 2012 12:58 |  #2343

I'm on a roll now. 2 pics from last week of a male yellowhammer in my garden. Both ISO 1250, 1/1250, f6.3, Canon 2x TC


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tectortony
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Jul 02, 2012 13:17 |  #2344

Honey Monster, they look good to me, I'm still saving.
By the way. any TC on the yellowhammer ?




  
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Honey ­ Monster
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Jul 02, 2012 14:07 |  #2345

Canon 2x TC on the yellowhammer as well




  
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woollyback
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Jul 02, 2012 16:10 |  #2346

Honey Monster wrote in post #14661247 (external link)
Canon 2x TC on the yellowhammer as well

oh err - 600mm and crap light . Looks good to me :)




  
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Jay ­ T
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Jul 02, 2012 16:26 |  #2347

they look good, what camera was used


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Honey ­ Monster
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Jul 02, 2012 16:28 |  #2348

Jay T wrote in post #14661817 (external link)
they look good, what camera was used

It was a 7D




  
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KenjiS
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Jul 02, 2012 16:29 |  #2349

^- thats what im questioning, what camera is this? im thinking a slightly older model... Or the exposure was pushed a hair

-edit- Or they're cropped heavily...


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Jay ­ T
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Jul 02, 2012 16:36 as a reply to  @ woollyback's post |  #2350

here's two from this weekend. My first time out since I got it back from sigma. Both at 600mm, F/6.3 and ss 1/200 and 1/160 with 7d iso 1000


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1DX\ 5diii gripped \ tokina 12-24 f/4 /sigma 24-60 f2.8 \ \ sigma 120-300 OS \ sigma 50 f1.4 \ canon 500 f4 IS \ canon1.4 III tc \ canon 2xii tc \sigma 2x dg tc \ 580ex \ 2x 430ex flickr (external link)

  
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Jay ­ T
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Jul 02, 2012 16:40 |  #2351

the 7d can be a pain in the a$$ in $hitty light when being use to a 5dii


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Honey ­ Monster
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Jul 02, 2012 16:54 |  #2352

KenjiS wrote in post #14661828 (external link)
^- thats what im questioning, what camera is this? im thinking a slightly older model... Or the exposure was pushed a hair

-edit- Or they're cropped heavily...

Camera was a 7D
1st red kite is about 30% of original frame, 2nd about 60%. Both yellowhammers are only about 20% of original frame. The yellowhammers were about 25 feet away. I'm not really sure how much a picture can be cropped and still be OK. My PP (in LR3) is still a bit trial and error, so maybe could be improved. I did increase exposure on the 1st yellowhammer by 2/3 stop in PP.




  
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Jay ­ T
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Jul 02, 2012 17:00 |  #2353

I find the 7d has problems with yellow feathers on birds.It blows the yellows and if you lower it in post they don,t come back to good . Anybody else agree or is it me alone ?


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Honey ­ Monster
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Jul 02, 2012 17:03 |  #2354

2 different examples from a couple of weeks back.

The deer is cropped to about 60% of the original frame. 7D + 2xTC ISO 800 1/640 f6.3 Handheld - can't rmember is IS on or off

The flower is uncropped 7D+2xTC ISO 800 1/1250 @ f6.3 handheld, IS Off. I should probably have dropped the ISO and turned on IS


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Honey ­ Monster
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Jul 02, 2012 17:11 |  #2355

the 7d can be a pain in the a$$ in $hitty light when being use to a 5dii

Unfortunately in northern Scotland that is the light we often get even in late June in the afternoon, although sunset is after 10:30pm if you can see it through the clouds / rain! I haven't used a full frmae like the 5Dii/iii, although I would like one.

I find the 7d has problems with yellow feathers on birds.It blows the yellows and if you lower it in post they don,t come back to good . Anybody else agree or is it me alone ?

I don't know whether this is true or not. From the histograms it doesn't look to me that the yellows have blown. It may be my PP.



  
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