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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

 
kin2son
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Jan 20, 2013 19:49 |  #2086
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Fuhrtographer wrote in post #15513216 (external link)
I took about 50 shots of my daughter sitting at the kitchen table and everyone is front focused to some degree, I never hit one perfect. I inadvertently shot the first 30 shots or so in Servo mode, I was hoping that was part of my problem, but after switching to one shot I get the same results.

Al servo isn't the problem like you said.

Have you MA yours? Mine need +8...

I tested mine more yesterday and I can definitely see it bf (meaning my +8 is too much, 0 looks much better) at longer distance whereas at closer distance (99% of my usage) +8 seems to do the trick.

I'll just have to accept that shooting wide open all the time means I will always miss a few shots, that is I can't expect to hit perfect focus everytime, especially I use it on my 2 yo daughter which never stands still.

So far I am happy with it.

Here's a quick example, @ f1.6.

IMAGE: http://farm9.staticflickr.com/8504/8397291897_4c1545836b_b.jpg
IMAGE LINK: http://www.flickr.com/​photos/kin2son/8397291​897/  (external link)
Bubble Fun :) (external link) by Kinson C | Photography (external link), on Flickr

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Invertalon
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Jan 20, 2013 21:51 |  #2087

So has anybody tested their lens at all distances and lighting and have a reliable lens that AF without issue? I see more and more coming forward with the same issue I had.

My replacement will come this week. If still bad, I will send to Sigma to correct it. Hopefully I wont need to.


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drzenitram
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Jan 20, 2013 21:53 |  #2088

Invertalon wrote in post #15513986 (external link)
So has anybody tested their lens at all distances and lighting and have a reliable lens that AF without issue? I see more and more coming forward with the same issue I had.

My replacement will come this week. If still bad, I will send to Sigma to correct it. Hopefully I wont need to.

Mine is fine, posted pictures a page or two ago.


| Bodies - 5D Mark II, T2i | Lenses - Helios 44-2, Sigma 35mm 1.4, Sigma 85 1.4, Sigma 70-200 2.8 OS, Tamron SP AF 1.4x TC | Lights - 430ex ii x2, Random 3rd party strobes

  
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Sirrith
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Jan 20, 2013 22:32 |  #2089

Invertalon wrote in post #15513986 (external link)
So has anybody tested their lens at all distances and lighting and have a reliable lens that AF without issue? I see more and more coming forward with the same issue I had.

My replacement will come this week. If still bad, I will send to Sigma to correct it. Hopefully I wont need to.

Mine is fine.


-Tom
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ecu1995
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Jan 20, 2013 23:15 |  #2090

Ok... I want to play the focus vs. distance game.... here is my pre-historic lame test..

I have not had to MA my lens at all.... these are all shot at 1.4, ss 640, iso 1600 (I was just shooting in a darker part of the house)

I started right in his face, (all focused with my center focus point on his eye...I always use one shot) and then backed up about 3 feet each time (give or take). All shot in Raw and the only processing was the standard LR imports and whatever flickr applies at upload...

IMAGE: http://farm9.staticflickr.com/8217/8401289234_febfaa18ac_c.jpg

IMAGE: http://farm9.staticflickr.com/8512/8401289438_80f7701a4b_c.jpg

IMAGE: http://farm9.staticflickr.com/8500/8401289624_d6f9d0380b_c.jpg

IMAGE: http://farm9.staticflickr.com/8192/8400202141_887c836edd_c.jpg

IMAGE: http://farm9.staticflickr.com/8211/8400207993_889994c0dd_c.jpg

I think it performs amazing well, I have been super happy with this lens from day 1 and have not had any issues with the focus at all....in fact, I am finding that I am getting more shots in focus with this lens on my 5dm2 that with my others....

And just b/c he is cute....

IMAGE: http://farm9.staticflickr.com/8326/8401322248_853fd5fcfb_c.jpg

I hope you that have sent it back get a better copy next go round!

Happy Snapper {mom to 3}
5dm2: Canon 50 1.4, 85 1.8, 40 2.8, Sigma 35 1.4, Lensbaby Spark
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kin2son
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Jan 21, 2013 00:06 |  #2091
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Am i safe to say that it is mainly the 5D3/6D owners that has this problem?

Yes Sirrith I know your copy is fine and you have a 5D3, or is it really? :p


5D3 Gripped / 17-40L / Σ35 / 40 Pancake / Zeiss 50 MP / Σ85 / 100L Macro / 70-200 f2.8L II IS / 430 EX II / 580 EX II / Canon 2xIII TC / Kenko Ext. Tubes
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Simplistic
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Jan 21, 2013 00:10 |  #2092

^ Someone did say wayyyyyy back in the history of this thread that whatever website it is that tests lenses (forget which one) placed the 5D II as the best body to use it with,
:)


5D II | Sigma 35mm f/1.4 | Canon 85 f/1.8 | Canon 24-105 f/4 L
WARNING!: Before commenting that my color correction is horrible, please keep in mind that I am colorblind, and that hasn't stopped me from trying.

  
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RMH
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Jan 21, 2013 00:26 |  #2093

My 5D2 doesn't like it, but I'm starting to doubt my 5D2 at the moment....



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Earwax69
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Jan 21, 2013 00:32 |  #2094

6D here and the Sigma 35 is my most reliable focussing lens. Very very solid performer. As it can focus in moonlight, it get the award of Most Romantic Lens of the year.


Canon 6D | S35mm f1.4 | 135mm f2 The rest: T3i, 20D, 15mm f2.8, 15-85mm, 24mm f2.8, 50mm f1.8, 85mm f1.8, 90mm f2.8 macro, 55-250mm.
So long and thanks for all the fish

  
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RMH
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Jan 21, 2013 00:35 |  #2095

ecu1995 wrote in post #15514174 (external link)
Ok... I want to play the focus vs. distance game.... here is my pre-historic lame test..

I have not had to MA my lens at all.... these are all shot at 1.4, ss 640, iso 1600 (I was just shooting in a darker part of the house)

I started right in his face, (all focused with my center focus point on his eye...I always use one shot) and then backed up about 3 feet each time (give or take). All shot in Raw and the only processing was the standard LR imports and whatever flickr applies at upload...
I think it performs amazing well, I have been super happy with this lens from day 1 and have not had any issues with the focus at all....in fact, I am finding that I am getting more shots in focus with this lens on my 5dm2 that with my others....

And just b/c he is cute....

QUOTED IMAGE

I hope you that have sent it back get a better copy next go round!

Love the shot from the front!

My is fine at these distances too. I need to take it outside and shoot at 100 foot before i see a issue, then it's very apparent, focus missing by miles.



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basketballfreak6
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Jan 21, 2013 01:43 as a reply to  @ RMH's post |  #2096

well here is my contribution, shot @1.4 ss 1/320 iso100 easily from over 15m away, focus on tree trunk, no changes to afma, took multiple shots and to my surprise every shot hit, even the couple i did with outer af points on my 5d3

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

Sigma 35mm f/1.4 (external link) by basketballfreak6 (external link), on Flickr

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

Sigma 35mm f/1.4 (external link) by basketballfreak6 (external link), on Flickr

my opinion (and i emphasis, my very humble opinion) on this again, first of all i just don't believe lens such as this is designed to take shots like that, so i think it will inevitably miss from time to time if you try to take shots at those kind of distances wide open, secondly i believe that you really need to give the lens something really obvious to focus on to improve hit rate at that kind of distance wide open and finally, how many of you would honestly take shots wide open like that with this lens all the time, i sure wouldn't, i would be pulling out my 70-200 for that

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RMH
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Jan 21, 2013 09:03 |  #2097

On a more cheerful note, here's one I took earlier at F1.4 which is v nicely in focus...

It's actually about a 1.4x crop, so the perspective is more like a 50mm in this.

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR


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mafoo
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Jan 21, 2013 09:31 |  #2098

RMH wrote in post #15515173 (external link)
It's actually about a 1.4x crop, so the perspective is more like a 50mm in this.

I think the "zoom" is more like a 50mm, but the perspective does not change when you crop it. It still has the perspective of a 35mm lens.


-Jeremy
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RMH
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Jan 21, 2013 09:41 |  #2099

mafoo wrote in post #15515268 (external link)
I think the "zoom" is more like a 50mm, but the perspective does not change when you crop it. It still has the perspective of a 35mm lens.

Kinda, but if I had walked forward to fill the frame this much at 35mm, the perspective would have been different, so while cropping didn't change the perspective as such, not walking forwards did, and this is the perspective you'd get with this framing from a 50mm lens...



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Invertalon
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Jan 21, 2013 10:30 |  #2100

Glad to hear there are copies without issue! Hoping my replacement is better! Love this lens so much, I just want it to work right!


-Steve
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New Sigma 35mm f/1.4 HSM DG
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