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Archive 2012 · Sigma 35mm f/1.4 DG HSM first impressions
  
 
Sven Jeppesen
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p.35 #1 · p.35 #1 · Sigma 35mm f/1.4 DG HSM first impressions


lucas lumiere wrote:
Wow, 34 pages littered with back and forths like this.

Can we come to a consensus that the siggy 35 is optically amazing, but that the trade-off is that there may be some copies with focus issues. Is the dock for lens adjustments available yet? Would that resolve the focus issues?

I bought myself a used 35L mostly because I liked the colours better. It's sharp enough for me.

Peace.



Of course there exist some copies with faults or focus issues. But the 35L also have copies with faults or focus issues. And here have been a few threads about focus problem with that lens also.



Mar 23, 2013 at 03:20 AM
Sven Jeppesen
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p.35 #2 · p.35 #2 · Sigma 35mm f/1.4 DG HSM first impressions


Lasse Eriksson wrote:
Ok, show some of the pics that didn't work out !!!


+1



Mar 23, 2013 at 03:33 AM
lucas lumiere
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p.35 #3 · p.35 #3 · Sigma 35mm f/1.4 DG HSM first impressions


Sven Jeppesen wrote:
Of course there exist some copies with faults or focus issues. But the 35L also have copies with faults or focus issues. And here have been a few threads about focus problem with that lens also.


No argument there.

I personally think Sigma has a real winner on it's hands. In fact, I think the sigma 50 and 85's are both really good too. Sigma seems to have really upped their game in the past couple of years. I will also say that at least in Canada, they seem to have really excellent product support as well. Good on them.



Mar 23, 2013 at 03:36 AM
Shield
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p.35 #4 · p.35 #4 · Sigma 35mm f/1.4 DG HSM first impressions


Still happy with my 2nd copy of the Sigma - the first one was all over the map depending on distance and lighting. The 2nd copy is a +8 MFA and deadly accurate. It lives on my 5d3 - sold the 35L to keep it. The Sigma just has that 3d effect and wow factor, and I use it around F/2 - F/2.2 to get rid of the vignette, but it's sharp wide open.


Mar 23, 2013 at 03:47 AM
JohnDizzo15
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p.35 #5 · p.35 #5 · Sigma 35mm f/1.4 DG HSM first impressions


With single spot AF wide open. Focal point was supposed to be the ring.

http://www.flickr.com/photos/94227509@N07/8581002059/


This one hit inadvertently as my daughter moved her head. Focal point on this one was actually off near her temple. Coincidentally, the AF was off enough that it almost put it in perfect focus.

http://www.flickr.com/photos/94227509@N07/8581002313/



Mar 23, 2013 at 04:41 AM
JohnDizzo15
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p.35 #6 · p.35 #6 · Sigma 35mm f/1.4 DG HSM first impressions


To reiterate, the AF was all over the place depending on distance and lighting conditions.

The only other lens I have that has exhibited anything similar to this extent is my Conurus modded Contax Zeiss N 50mm. Only difference is, I can enter independent AFMA values at close, mid and far distances which adjusts the whole focal range respectively but simultaneously. Not the case for the S35. Not yet at least. Hopefully the dock and chip on the mount will allow for multiple values. Even then, I don't know that it would have accounted for all the AF variances with the copy I just had.

There is one copy left at Canoga Camera out here in So Cal. Opted to return instead of exchange with BH. Will be testing this next copy out in store.

Sven - Definitely agree with you regarding the 35L as I have already stated in a previous post about every company having defective products somewhere along the way. No one is 100%.

Hence the reason I'm continually baffled at the fact that people in this thread think I'm BSing about my genuine desire to own a good working copy of this lens.



Mar 23, 2013 at 04:50 AM
Rickuz
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p.35 #7 · p.35 #7 · Sigma 35mm f/1.4 DG HSM first impressions


To all ye who bought the Sigma 35 and experienced AF inconsistencies.

Did you simply replace the lens with a better copy, or did you send it to Sigma for calibration?

If you did the latter, did Sigma fix your lens?



Mar 23, 2013 at 08:31 PM
DemonAstroth
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p.35 #8 · p.35 #8 · Sigma 35mm f/1.4 DG HSM first impressions


This thread has made me do it.

Sold the 50mm f/1.4 and kept the 85mm f/1.8 (one of the two had to go to be able to afford it), and just bought the Sigma 35mm.

I hope I won't regret it, as the only non-Canon lens I've had is the Tokina 2.8 UWA, and I've heard Sigma horror stories.

Time will tell, but I'm pretty excited.



Mar 23, 2013 at 11:21 PM
mttran
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p.35 #9 · p.35 #9 · Sigma 35mm f/1.4 DG HSM first impressions


AF inconsistencies is a results of not-well-calibrated lens and bodies. The differences in lens optical shifting can also send the bodies AF sensor and AF firmware to North Pole anytime. With Sigma, you might have another variable since their lenses motor step was mapping one-to-one to each individual canon bodies AF driver. So, the chances to find a good sigma lens is always harder than a canon one because of those reasons and that does not mean they don't exist. With all the great images shown here, Sigma 35 is one hell of a lens.

Edited on Mar 24, 2013 at 12:25 AM · View previous versions



Mar 24, 2013 at 12:12 AM
marko1953
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p.35 #10 · p.35 #10 · Sigma 35mm f/1.4 DG HSM first impressions


Here is a link to the DigitalRev review of Canon 35L 1.4 vs Nikon 35 1.4 vs the Sigma 35 1.4. There was apparently a bokeh survey which showed the Sigma on top. It may be dodgy as there are other variables (such as the type of pose of the girls) which may have affected the results but interesting tongue in cheekiness video.
http://www.digitalrev.com/article/battle-of-the-bokeh-canon/NzI2ODkwODA_A




Mar 24, 2013 at 12:24 AM
 

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Rickuz
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p.35 #11 · p.35 #11 · Sigma 35mm f/1.4 DG HSM first impressions


mttran wrote:
AF inconsistencies is a results of not-well-calibrated lens and bodies. The differences in lens optical shifting can also send the bodies AF sensor and AF firmware to North Pole anytime. With Sigma, you might have another variable since their lenses motor step was mapping one-to-one to each individual canon bodies AF driver. So, the chances to find a good sigma lens is always harder than a canon one because of those reasons and that does not mean they don't exist. With all the great images shown here, Sigma 35 is one hell of a lens.


Which means that if I own a Sigma lens with AF inconsistencies, and if I want Sigma to fix it for me, I should send my Camera with the lens?

And then Sigma will fine tune the lens to my camera, right?



Mar 24, 2013 at 12:29 AM
mttran
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p.35 #12 · p.35 #12 · Sigma 35mm f/1.4 DG HSM first impressions


I am afraid so.... sigma technician will fine tune the mapping curve and final testing the lens with your body.


Mar 24, 2013 at 12:33 AM
Paul Mo
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p.35 #13 · p.35 #13 · Sigma 35mm f/1.4 DG HSM first impressions


http://farm9.staticflickr.com/8376/8584689538_66aefa93ac_o.jpg

Canon 5D3, Sigma 35 f1.4, 1/1000th @ f2, 100iso.

Bash that Sigma.



Mar 24, 2013 at 01:23 AM
Sven Jeppesen
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p.35 #14 · p.35 #14 · Sigma 35mm f/1.4 DG HSM first impressions


Rickuz wrote:
To all ye who bought the Sigma 35 and experienced AF inconsistencies.

Did you simply replace the lens with a better copy, or did you send it to Sigma for calibration?

If you did the latter, did Sigma fix your lens?


Sigma have a USB dock (don't think they have started to sell it) where you can fine tune and adjust the AF on all their new lenses. Roger Cicala and a few other have been writing about it, and what they belive it can do



Mar 24, 2013 at 01:30 AM
thw2
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p.35 #15 · p.35 #15 · Sigma 35mm f/1.4 DG HSM first impressions


JohnDizzo15 wrote:
To reiterate, the AF was all over the place depending on distance and lighting conditions.

The only other lens I have that has exhibited anything similar to this extent is my Conurus modded Contax Zeiss N 50mm. Only difference is, I can enter independent AFMA values at close, mid and far distances which adjusts the whole focal range respectively but simultaneously. Not the case for the S35. Not yet at least. Hopefully the dock and chip on the mount will allow for multiple values. Even then, I don't know that it would have accounted for all the AF variances with
...Show more

This is where statistics come in. We can examine the data here.

On one of Canon's best AF sensors, the 5D3, we have
Sigma 85 f/1.8 moderate AF variability 6.3%, good AF accuracy 2.8%
Canon 85 f/1.2 low AF variability 3.4%, excellent AF accuracy 1.9%
Canon 85 f/1.8 low AF variability 3.5%, excellent AF accuracy 1.8%

Why should anyone be surprised that third party lenses struggle more with AF accuracy and have moderately poor AF variability than their original counterparts?



Mar 24, 2013 at 01:44 AM
Rickuz
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p.35 #16 · p.35 #16 · Sigma 35mm f/1.4 DG HSM first impressions


Sven Jeppesen wrote:
Sigma have a USB dock (don't think they have started to sell it) where you can fine tune and adjust the AF on all their new lenses. Roger Cicala and a few other have been writing about it, and what they belive it can do


Yes that thing sounds awesome on paper, but I wonder if it will be able to cure inconsistencies in the auto focus?

I can live with having to microadjst my lenses, but AF inconsistencies is 100% unacceptable.



Mar 24, 2013 at 02:00 AM
Sven Jeppesen
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p.35 #17 · p.35 #17 · Sigma 35mm f/1.4 DG HSM first impressions


thw2 wrote:
This is where statistics come in. We can examine the data here.

On one of Canon's best AF sensors, the 5D3, we have
Sigma 85 f/1.8 moderate AF variability 6.3%, good AF accuracy 2.8%
Canon 85 f/1.2 low AF variability 3.4%, excellent AF accuracy 1.9%
Canon 85 f/1.8 low AF variability 3.5%, excellent AF accuracy 1.8%

Why should anyone be surprised that third party lenses struggle more with AF accuracy and have moderately poor AF variability than their original counterparts?


None of this have anything to do with the Sigma 35 lens of course. I didn't know Sigma had a 85/1,8 lens either ?
It's a beta software you refer to. A beta software that depends on result uploaded from unknown users. Just look at the threads here at FM from FoCal users. Everyone does the test in a very different way. Different light, different distance, some indoors others outdoors.
you will also get very different result depending on what body (lens) combo you use in the software.
It could have some (little) meaning if it actually where the 35mm lenses we talk about in your test chart. But it's very different tele lenses.
I would not call it statistics either. If you read on his chart and website, they have tested the Sigma 85 with 13 bodies That's a lot less than the amount of bodies and people that have tested the Sigma 35 in this thread......or in any of the polls about the Sigma in this forum



Mar 24, 2013 at 02:13 AM
thw2
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p.35 #18 · p.35 #18 · Sigma 35mm f/1.4 DG HSM first impressions


Sven Jeppesen wrote:
None of this have anything to do with the Sigma 35 lens of course. I didn't know Sigma had a 85/1,8 lens either ?
It's a beta software you refer to. A beta software that depends on result uploaded from unknown users. Just look at the threads here at FM from FoCal users. Everyone does the test in a very different way. Different light, different distance, some indoors others outdoors.
you will also get very different result depending on what body (lens) combo you use in the software.
It could have some (little) meaning if it actually where the 35mm
...Show more

Typo. That's a Sigma 85 f/1.4 lens. And yes, Sigma 35 f/1.4 data is not presented.

Sure, there are different users. But all using the same model of lens on the same model of camera. If the data is supposed to lie all over the place based on different test conditions etc, then how do you explain the tight AF consistency of the Canon 35 f/1.4, 85 f/1.2 etc etc etc, as compared to the Sigma data?

I do not know why you are so defensive about Sigma lenses. You own Sigma shares? Perhaps you own many Sigma lenses? I used to have third party lenses but dumped them all because of poor AF consistency.



Mar 24, 2013 at 02:46 AM
Sven Jeppesen
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p.35 #19 · p.35 #19 · Sigma 35mm f/1.4 DG HSM first impressions


Why would I be defensive about the Sigma ? I own 2 Sigma lenses and 9 Canon lenses. There is no data from the Sigma lens, so how can I explain it then? But the lenses you write about have nothing to do with the new Sigma 35. It's a huge difference in both build and optics. From Roger Cicala & LensRentals.com about that.

Roger's Take
Roger Cicala
President of LensRentals.com
Itís been a long time since a take was so easy. This is the sharpest 35mm made. It costs a lot less than the Canon 35 f/1.4mm or the Zeiss 35mm lenses. Any questions? Itís extremely well built and everything Iíve been able to see, inside and out, indicates quality control has really improved at Sigma.
If youíre a bokeh fanatic, you may like something else better (or maybe not, thatís a subjective call). If you need Image Stabilization, then the 35mm f/2 IS may be worthwhile. Otherwise, this is the 35mm lens.
Arguably as good or better than anything else made, and at a lower price

Edited on Mar 24, 2013 at 03:17 AM · View previous versions



Mar 24, 2013 at 03:12 AM
thw2
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p.35 #20 · p.35 #20 · Sigma 35mm f/1.4 DG HSM first impressions


Sven Jeppesen wrote:
Roger's Take
Roger Cicala
President of LensRentals.com
Itís been a long time since a take was so easy. This is the sharpest 35mm made. It costs a lot less than the Canon 35 f/1.4mm or the Zeiss 35mm lenses. Any questions? Itís extremely well built and everything Iíve been able to see, inside and out, indicates quality control has really improved at Sigma.
If youíre a bokeh fanatic, you may like something else better (or maybe not, thatís a subjective call). If you need Image Stabilization, then the 35mm f/2 IS may be worthwhile. Otherwise, this is the 35mm lens.
Arguably as good or
...Show more

Roger's take:
- sharpest 35mm
- costs a lot less than...
- well built
- everything Iíve been able to see, inside and out, indicates quality control has really improved
- a bokeh fanatic, you may like something else better
- Image Stabilization...
- arguably as good or better than anything else made, and at a lower price

Not a word about AF consistency or accuracy.



Mar 24, 2013 at 03:16 AM
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