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FORUMS Sample Photo Archives Lens Sample Photo Archive 
Thread started 30 Mar 2015 (Monday) 22:20
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Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary

 
sidknee
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Mar 22, 2017 16:46 |  #2386

filam wrote in post #18308205 (external link)
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Hosted photo: posted by filam in
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forum: Lens Sample Photo Archive

Always love tits, but the main thing I notice about this photo is the terrible straight joint in the brickwork!




  
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filam
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Mar 22, 2017 16:47 |  #2387

sidknee wrote in post #18308221 (external link)
Always love tits, but the main thing I notice about this photo is the terrible straight joint in the brickwork!

I knew you would like this, that's why I posted it. :-)


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little ­ johny
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Mar 22, 2017 21:43 |  #2388

IMAGE: https://c1.staticflickr.com/4/3939/33215044900_1c0db97da0_b.jpg



  
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jhayesvw
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Mar 23, 2017 00:13 |  #2389

The weird thing about camera systems is that there can be some variance in each lens and some variance in the camera body.
When you put these together you can get a perfect match and everything is great, a horrible match where nothing works right and everything in between.
The beauty of the Sigma is that with the dock we should be able to get the system very close if we invest some time. I've had my Sigma work fantastic and I've also had it not give me anything decent on an outing.

I say keep at it.

sidknee wrote in post #18308201 (external link)
I'm fairly sure it's just yours that is different, I've been pretty underwhelmed with the AF performance, the same as most everyone else.
Keep on keeping on mate, before it changes it's mind! ;)



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Immaculens
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Mar 23, 2017 10:48 |  #2390

Well he was referring to the poor AF using the Sigma 1401 1.4x... 'Most' have issues with it... Judging from this thread.

jhayesvw wrote in post #18308452 (external link)
The weird thing about camera systems is that there can be some variance in each lens and some variance in the camera body.
When you put these together you can get a perfect match and everything is great, a horrible match where nothing works right and everything in between.
The beauty of the Sigma is that with the dock we should be able to get the system very close if we invest some time. I've had my Sigma work fantastic and I've also had it not give me anything decent on an outing.

I say keep at it.


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Learn to love to do well, and you shall. ~ C. Poseidon

  
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davidmtml
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Mar 23, 2017 11:02 |  #2391

On Sunday evening, I ordered the TC-1401. Anxious to try it out with my 5D IV. I paid the $3.99 extra for one-day shipping, which should have arrived on Tuesday. Unfortunately nothing has showed up yet. On the tracking information, on Monday morning it says "Left seller facility, in transit to Carrier Facility" (which is FedEx). Nothing since then....maybe it fell of the back of the truck, but apparently it has still never even made it to FedEx :(




  
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CyberDyneSystems
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Mar 23, 2017 13:28 |  #2392

Varying results is really the norm for any t-Con combo that forces the body in use to try to AF out of spec. In the case fo the 150-600mm C, ANY T-con will reduce aperture to smaller than f/8,. ie: beyond ANY Eos Bodies spec for functional AF.

Going all the way back to the first case of "taped pins" on t-Cons, results have always varied.

We often struggle to get EOS bodies to AF past f/5.6, and yes here SIGMA is trying to fool bodies into autofocusing @ f/9.

It is less about specific camera, lens and T-Con models, and apparently far more about specific copies of body that happen to work better than others. IMHO The norm, based on years of testing my own combinations, as well as input from others, is that the rate of actual success (decent consistent accurate AF) is far lower than the rate of out and out failure, and even lower than the rate of merely sketchy inconsistent results.

jhayesvw wrote in post #18308452 (external link)
The weird thing about camera systems is that there can be some variance in each lens and some variance in the camera body.
When you put these together you can get a perfect match and everything is great, a horrible match where nothing works right and everything in between.
The beauty of the Sigma is that with the dock we should be able to get the system very close if we invest some time. I've had my Sigma work fantastic and I've also had it not give me anything decent on an outing.

I say keep at it.

Immaculens wrote in post #18308667 (external link)
Well he was referring to the poor AF using the Sigma 1401 1.4x... 'Most' have issues with it... Judging from this thread.


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UK_MARK
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Mar 23, 2017 13:31 |  #2393

I wonder if it could be anything to do with me MFA'ing my lens through Reikan Focal Pro at 840mm, I would not have thought so but might just be. I still can not believe i am the only one with no issues, It is the only thing i can think off that may be diff from others.


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cogs ­ v
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Mar 23, 2017 14:11 |  #2394

IMAGE: https://c1.staticflickr.com/4/3935/32769276123_33f2b881cc_b.jpg
IMAGE LINK: https://flic.kr/p/RVH7​8n  (external link) Short Eared Owl (external link) by Colin Vanner (external link), on Flickr

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filam
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Mar 23, 2017 14:13 |  #2395

Stunning Shot!


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cogs ­ v
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Mar 23, 2017 14:16 |  #2396

filam wrote in post #18308851 (external link)
Stunning Shot!

Thanks Hong
Colin


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Immaculens
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Mar 23, 2017 15:24 |  #2397

UK_MARK wrote in post #18308813 (external link)
I wonder if it could be anything to do with me MFA'ing my lens through Reikan Focal Pro at 840mm, I would not have thought so but might just be. I still can not believe i am the only one with no issues, It is the only thing i can think off that may be diff from others.

Yo Mark ~ :-P

Curious, do you vary your AF settings or do you mainly stay consistent only using - for example - center AF point - or even expanded center AF point?

Can you share what settings you have the best results with or at least tell us what settings to avoid?


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jhayesvw
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Mar 23, 2017 16:34 |  #2398

Mark,
MFAing the lens/TC combo most likely has a lot to do with how well yours works.

That's what I was talking about in my post above.
You put in the initial setup work and are reaping th benefits.



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sidknee
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Mar 23, 2017 17:06 |  #2399

IMAGE: https://c1.staticflickr.com/4/3842/33228443420_88d2b68615_b.jpg
IMAGE LINK: https://flic.kr/p/SChs​yU  (external link) IMG_0564--2017-03-23--17-20-48 (external link) by sidknee2323 (external link), on Flickr



  
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sidknee
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Mar 23, 2017 17:17 |  #2400

jhayesvw wrote in post #18308968 (external link)
Mark,
MFAing the lens/TC combo most likely has a lot to do with how well yours works.

That's what I was talking about in my post above.
You put in the initial setup work and are reaping th benefits.

I don't think mfa has any effect on how the lens/camera actually carries out it's focusing just on the placement of the plane of focus at the sensor. Obvs this will effect the sharpness of the result but not the ease with with focus is achieved.
Without checking out at least a couple of the things on the same couple of bodies it's really impossible to tell what the real difference in performance is.




  
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