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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 20 Oct 2012 (Saturday) 11:09
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Sigma 85mm 1.4 - Wow

 
tmwag
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Oct 20, 2012 18:30 |  #16

mannetti21 wrote in post #15147721 (external link)
Sigma as a disproportionally large number of complaints regarding AF, and QC in general.

Nothing to do with the 85 1.4 but the 30 1.4 has a large number of complaints and happy users as well. Unfortunately I'm in the dissatisfied group. My recently purchased 30 f/1.4 was returned for consistent front focus, missed focus and a grinding focus ring.




  
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Naturography
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Oct 20, 2012 18:35 |  #17

can you post the pic with the worst PF? how bad is it?


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FEChariot
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Oct 20, 2012 18:43 |  #18

Raylon wrote in post #15146956 (external link)
Only the people with problems post, most are happy with Sigma QC.

Well I post about my 17-50 and 30 and I am happy with their performance.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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wayne.robbins
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Oct 20, 2012 18:45 |  #19

jkru617 wrote in post #15147770 (external link)
That seems to be the stigma and I was nervous about ordering this lens because of that. Not the case for me though. My sigma experience which is this lens and a fisheye has been vey good. Autofocus has a different noise that is annoying but IQ/focus seems that I have been "lucky"

Let's put it back into perspective; Are you any luckier when you use a Canon lens and it focuses correctly, and it's IQ/focus seems to be right ? From what I've gathered, most of the complaints mainly center around a few Sigma models- like the 30mm f/1.4 and the 50mm f/1.4.. Other models- rarely do you see issues about them- from what I've read. In a lot of ways- it's similar to Canon's lineup.. Certain model lines are winners, some are losers- lenses best avoided, and some smack in the middle - middle of the road. And then there are the low priced lenses- basically kit lenses or similar in nature..

Personally, I feel that if Sigma was that terrible- there'd be no way that they could remain in business. I am sure that there are a few that have had issues, but I think that it is probably far from the norm.


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2cruise
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Oct 20, 2012 20:37 as a reply to  @ post 15147770 |  #20

My one and only experience with Sigma was not good.


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aegid
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Oct 21, 2012 06:54 |  #21

lomenak wrote in post #15147142 (external link)
you should also try focus on farther distance. mine was spot on for half body portraits and when I tried full body environmental portrait, it back-focused badly about .5 - 1 meter!

Seconding a check at longer distances. At f/1.4 my current one is tack sharp and accurate for maybe 5 feet fully reliable. 7+ and it's hit and miss, usually miss. I've heard at least a few cases like mine.


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kin2son
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Oct 21, 2012 07:28 |  #22
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aegid wrote in post #15149258 (external link)
Seconding a check at longer distances. At f/1.4 my current one is tack sharp and accurate for maybe 5 feet fully reliable. 7+ and it's hit and miss, usually miss. I've heard at least a few cases like mine.

Any sample to show aegid? I think it's more likely 'to miss' at longer distance simply because the focus area is a lot smaller say if you are aiming for the eye. Therefore I don't think it's really a miss per se...

I bet the lens af just fine if you use liveview 10x.


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jkru617
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Oct 21, 2012 10:05 |  #23

Dasani wrote in post #15147854 (external link)
can you post the pic with the worst PF? how bad is it?

Ill have to shoot some more to get a better sample. The one example out of my first 300 or so shots is an out of focus candle with a bit of green and purple fringe. So I wouldnt think twice about it if you are worried. Ill post that picture later




  
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jkru617
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Oct 21, 2012 10:06 |  #24

aegid wrote in post #15149258 (external link)
Seconding a check at longer distances. At f/1.4 my current one is tack sharp and accurate for maybe 5 feet fully reliable. 7+ and it's hit and miss, usually miss. I've heard at least a few cases like mine.

I will definitely look into this




  
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Oct 21, 2012 10:40 as a reply to  @ post 15147770 |  #25

One thing about the distance shots you posted at f11. That's like trying to sight in a sniper rifle hitting the broad side of a barn and then going out and tryin to get a head shot. The Dof is basically everything there. Try 1.4 for the distance ones too.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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drzenitram
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Oct 21, 2012 15:26 |  #26

My 85 1.4 also works flawlessly, from mfd to 150ft away, f1.4 to f22.

I rarely find myself using it narrower than f2.8 though, and rarely further away than a full body shot at around 15-20 ft.


| 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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lomenak
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Oct 21, 2012 17:47 |  #27

kin2son wrote in post #15149310 (external link)
Any sample to show aegid? I think it's more likely 'to miss' at longer distance simply because the focus area is a lot smaller say if you are aiming for the eye. Therefore I don't think it's really a miss per se...

I bet the lens af just fine if you use liveview 10x.

last time I shot full body portrait, used center focus point on the subject head - not really small focus area and all three shots were back focused by about 0.5-1m - sadly I only noticed on my computer and had no chance to reshoot:/

you cant really use liveview when shooting portraits and AF not working in liveview imho.

im glad i sold the Kegma and got 135L, this thing is just awesome and never miss focus at the same shots like the 85.

I have had 3 sigma lenses (24,50,85) and was only happy with the fifty.

Im saving for 85L, not going the Sigma route again..




  
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Oct 21, 2012 19:11 |  #28

mannetti21 wrote in post #15147721 (external link)
Nothing personal here, but I can't stand when anyone falls back on the theory that "only people with problems post." It may be a TRUE statement, but it is also true of people buying Canon, Tamron, Nikon, etc, etc., therefore, it shouldn't be used an excuse. In relation to these other brands, Sigma as a disproportionally large number of complaints regarding AF, and QC in general.

I've said it before so I'll say it again

I believe this problem is caused by people buying into that stigma with the Sigma lenses, They have focus problems is what everyone hears, So the first thing they do is go looking for problems, And lo and behold, they find them usually...the lens might actually have been completely fine if they just used it normally, but they went hunting for problems and the first few "Bad" shots they had (Which might not have even been the lens) they immediately went all OH GOD I GOT A SIGMADUD! Heck I'm guilty of it once or twice too... I eventually realized it was just a peculiarity of the 7D's focusing system as opposed to a problem with the lens...

Not going to say Sigma's QC couldnt use work, nor am I going to say people dont have legitimate problems with their lenses, Heck, they even admitted it VERY recently (And supposedly they rolled out a new testing method that lets them test EVERY lens before shipping as opposed to every 10th lens) but I also dont think that its THAT bad.. Look in my Sig, I've owned a LOT of Sigma glass.. and only one had a real legitimate problem that was likely fixable (The 30mm f/1.4, Which couldnt lock focus on anything..)

In other words, I have had an equal number of dud lenses from Canon and Sigma...


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aegid
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Oct 21, 2012 20:35 |  #29

Not even using it on people's eyes. I've tried things like banners and still had it soft from the misfocus and it seems to get worse the farther your focus target is. Close up it kicks ass so that's what I try to keep it on. It's my third Sigma 85 and I'm happy enough with it. It would be even better if it worked at all distances.


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c2thew
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Oct 21, 2012 22:03 |  #30

you are pretty much paying for the bokeh when going for the 85l ii. The sigma 85mm's bokeh is slightly distracting


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Sigma 85mm 1.4 - Wow
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