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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 17 Sep 2012 (Monday) 13:11
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New Sigma 35mm f/1.4 HSM DG

 
Arob1000
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Jan 19, 2013 19:19 |  #2041

I'm not really sure what you guys are worried about. I just checked my copy and it performed like drzenitram's.

The one thing that does help as with any f/1.4 lens is using AI Servo mode, especially handheld.

I tested mine at f/1.4 at a range of distances from 10 feet to 150 feet and the majority of my images were very sharp at their focus point at +3 MFA on my 5D3 using a single point focus mode.

I'll attach a few of them so you guys can see what I'm talking about.


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LV ­ Moose
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Jan 19, 2013 19:22 |  #2042

Arob1000 wrote in post #15509785 (external link)
The one thing that does help as with any f/1.4 lens is using AI Servo mode, especially handheld.

Never heard that before. Why would AI Servo help, at any focal length?


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Sirrith
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Jan 19, 2013 19:36 |  #2043

LV Moose wrote in post #15509794 (external link)
Never heard that before. Why would AI Servo help, at any focal length?

Probably because a lot of focus error with fast primes is due to user/subject movement, AI Servo would help mitigate this somewhat.

Just tested mine thanks to all you paranoid people :)

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Arob1000
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Jan 19, 2013 19:37 |  #2044

LV Moose wrote in post #15509794 (external link)
Never heard that before. Why would AI Servo help, at any focal length?

It is much better than 1 shot because subtle movement can effect your plane of focus at f/1.4 since it is so small. Someone recommended it to me when I was getting into primes and it actually helps my keeper rate go up a lot.


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Arob1000
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Jan 19, 2013 19:39 |  #2045

More examples.


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Arob1000
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Jan 19, 2013 19:40 |  #2046

Couple more with crop.


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Arob1000
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Jan 19, 2013 19:40 |  #2047

Some more.


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Arob1000
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Jan 19, 2013 19:41 |  #2048

Last ones, I was getting a bit paranoid too, probably should stop reading this thread...Sorry for the string of posts but only can attach 2 images/post.

Anyway I wouldn't worry about this being an issue with the majority of these lenses but it looks like a couple copies may be effected.

All the shots I posted have the full image and a crop of the point of focus from different ranges.


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Jan 19, 2013 19:54 |  #2049

These were around 1/200 or 1/400 ISO 100 f/1.4 ..I think me shaking here caused some problems. This is my cousin Dylan around 12 ft away from me in the beginning then I just got into shooting ..I still like this lens a lot. These samples I'm putting up look so good to me even though they are pretty boring.

IMAGE: http://farm9.staticflickr.com/8213/8397102118_583f9d5736_b.jpg
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Sigma 35 Test Outdoors-9 (external link) by Vixxie PWI (external link), on Flickr
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Sigma 35 Test Outdoors-11 (external link) by Vixxie PWI (external link), on Flickr
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whmeltonjr
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Jan 19, 2013 20:26 |  #2050

All of this AF testing is interesting. I've got the Nikon mount, but I haven't used it anywhere but inside so far. It is sharp wide open at any distance in the house without any adjustment. I'll have to test it outside tomorrow.


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Sirrith
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Jan 19, 2013 20:32 |  #2051

Vixen89 wrote in post #15509880 (external link)
These were around 1/200 or 1/400 ISO 100 f/1.4 ..I think me shaking here caused some problems. This is my cousin Dylan around 12 ft away from me in the beginning then I just got into shooting ..I still like this lens a lot. These samples I'm putting up look so good to me even though they are pretty boring.

Looks fine to me!


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Jan 19, 2013 21:03 |  #2052

I am still picking up the lens. Sure I will be running some tests on a tripod to.


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idsurfer
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Jan 19, 2013 21:15 |  #2053

All these shots look fine! Thank you for posting them so I can see what I should realistically expect from the lens in terns of focus at various FD's. I am now very much convinced mine was problematic. <10ft it was good to go, >10ft it was a crap shoot. but it was sporadic. So sporadic that it took me a couple months to finally decide something was up. The shots I did get from it I loved.


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Jan 19, 2013 21:21 |  #2054

Don't have a dog in this hunt...just sold my 35L to help finance an 85L II but I am struck by the strange dichotomy occurring here and on FM. Here the lens appears to be universally accepted without qualification. Over on FM, however there is another uproar about focus issues on this one too. One poll garnered 30% of the respondents with issues. Now the poll was very small and the percentage may have changed since the early stages (haven't checked recently) but you would be hard pressed to believe that we are talking about the same lens. For a time, when I sold my 35L, I had considered reinvesting in the sigma. I did live through the lottery (Russian Roulette) of the 50 f/1.4 and though my 2nd copy was pretty good ..I spent my life with it waiting for it to let me down at a crucial moment. I was afraid to take it out of my bag and throw it on my camera in critical situations. Its gone. I'm happy and I still can't figure out why most here are happy and a lot over there are not.
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Zeiss 2.8/21 ZE, 40mm f/2.8

  
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agog
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Jan 19, 2013 21:27 |  #2055

As a quick addition to my Sigmalux experience. I replaced it with a 50L (which would not seem to be the lens for someone worried about consistent performance) but I was aware of the issues that it had and those issues were not generally sporadic but constant (focus shift) knowing the parameters that creates those issues I don't go into those situations and the lens has never let me down. It does what it does and does it very well. I once questioned whether it was sharp enough wide open and worked on my technique until it was
Tim


70D, 6D, 50mm f/1.2 L, 70-300mm F4-F5.6L, 400 mm f/5.6L, Zeiss 2/35 ZE, 135 f/2.0L, 85mm f/1.2L, 70-200L II,
Zeiss 2.8/21 ZE, 40mm f/2.8

  
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