• UPDATE



    The forum will be moving to a new domain in the near future (canonrumorsforum.com). I have turned off "read-only", but I will only leave the two forum nodes you see active for the time being.

    I don't know at this time how quickly the change will happen, but that will move at a good pace I am sure.

    ------------------------------------------------------------

Sigma 50mm f/1.4 DG HSM Art

Viggo said:
**Service update**

I just now received an update for my 50 Art at the repair shop.

They have ordered the mother board of the lens to replace. I can guarantee, as an old consumer electronics rep guy, they have NO idea what's wrong, and decided to switch out all the electronics and cross their fingers. It's also cheaper to replace the whole board, than to find a single component that might act up, very tricky to find.

So a brand new lens, and they have no idea whats wrong, so they try something. I'm not all that confident, because I still can't believe yet again I got a faulty brand new lens, no way....

Yeap......welcome to SMT world. It's cheaper to replace the board. I hope the tech has enough training ::)
 
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Eldar said:
Just to follow up, this is the result from FoCal. It is 63 shots in this chart. I stopped it there, because it was (of pretty obvious reasons) not able to determine an AFMA factor.

Holly molly. I can sense the stress as these dots were being plotted on the chart. If you heavily reply on AF for your shooting, this copy needs to be returned.
 
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*service update*

I asked the store I bought it from if I was supposed to wait three weeks to repair a brand new lens, and after a day or two they got back to me and said that they could replace it with a new one for me.

I initially said no, because it seems they don't work, I would rather replace a part in my old one. But then thought about it and asked them if they had many returns. And said be honest d@mn it! And he said they have had 4-5 with the same issue, but sold hundreds. I translated that into they sold 100 and 15 were faulty. So I decided to get mine replaced as well. Shipping Monday.
 
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Eldar said:
I returned my "sick" lens on Tuesday and received the replacement yesterday. All the shops over here have plenty in stock, so it is a bit surprising, hearing how late deliveries are in the US.

I will run it through FoCal today. Fingers crossed for a healthy copy this time.

So how did the replacement work out for you?
 
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guys, I'm really in love with this lens now... took only 1 shot for this @ f1.4 and it nailed the focus perfectly (for me)

14257914762_0a85cb05a6_b.jpg
 
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Is it normal for a highly anticipated lens to get released in April, get just a few reviews, and then...nothing on the Web?

I've checked...Except for an informal review from Australia, nothing (besides CR!) has been added since the end of April.
 
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*another service update*

So, the old 50 Art is scrapped and the new one is in the mail. I'll have it in my hands on Thursday I guess, thank you useless post office. I will not make a quick "yes it works!!" Update without making sure it works over time. But I will post an update on how it performs compared to the other one, but with a pinch of salt that I might suddenly change.

Sigma gets their very last chance now.
 
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razeac said:
helvetes POSTEN.NO >:(


That's good to hear Viggo. I'll pray for the camera gods that you'll have a good copy

Haha! Enig i den! But turns out that they will have it hear on Wednesday. I have said a small prayer myself, I actually think I deserve a working lens. But I have a curse that whenever I buy a new lens and not used, I have all sorts of problems!
 
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Just got mine on Saturday. Took a few test shots around the neighborhood and everything seemed to be working great - focus was quick and sharp, image quality was amazing, etc.

But then noticed that the AF was not consistently working when going from infinity to closer distances. Doesn't even hunt, just does nothing and doesn't move past infinity on the distance scale without a manual nudge past infinity that then allows the AF to lock on the subject. Also doesn't appear to be consistent - sometimes it was working, other times it wasn't.

Anyone have any ideas to help with this? I feel that I might be doing something wrong or have adjusted a setting in error (even though I've never had this happen on any other lenses and I tested 2 others without issues). Don't want to send in if I don't have to as I just got it a few days ago!
 
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jreach11 said:
Just got mine on Saturday. Took a few test shots around the neighborhood and everything seemed to be working great - focus was quick and sharp, image quality was amazing, etc.

But then noticed that the AF was not consistently working when going from infinity to closer distances. Doesn't even hunt, just does nothing and doesn't move past infinity on the distance scale without a manual nudge past infinity that then allows the AF to lock on the subject. Also doesn't appear to be consistent - sometimes it was working, other times it wasn't.

Anyone have any ideas to help with this? I feel that I might be doing something wrong or have adjusted a setting in error (even though I've never had this happen on any other lenses and I tested 2 others without issues). Don't want to send in if I don't have to as I just got it a few days ago!

Check the other 50 Art threads and you'll see this happens to others as well. You can buy the docking and adjust different afma values for different distances first. But since people say they have copies with zero issues and non of us with faulty ones can get them to work no matter what, send it back while you can.
 
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Viggo said:
*another service update*

So, the old 50 Art is scrapped and the new one is in the mail. I'll have it in my hands on Thursday I guess, thank you useless post office. I will not make a quick "yes it works!!" Update without making sure it works over time. But I will post an update on how it performs compared to the other one, but with a pinch of salt that I might suddenly change.

Sigma gets their very last chance now.

I hope you have better luck this time around!! We're all still waiting to hear how Eldar's new lens is doing.
 
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I just looked at the comparisons between the Sigma and Canon 1.4 on The Digital Picture's site. From what I can see, the Sigma destroys just about all of them in IQ. 50 is probably my favorite focal length. I believe I can see this lens in my future.
 
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Viggo said:
Check the other 50 Art threads and you'll see this happens to others as well. You can buy the docking and adjust different afma values for different distances first. But since people say they have copies with zero issues and non of us with faulty ones can get them to work no matter what, send it back while you can.

Thanks Viggo. I read through the other threads and think my issue is a bit different from yours and Eldars (and others). Mine is that the autofocus does not move at all out of infinity after focusing on a far away object then trying to focus on a closer object. The autofocus works great if not focusing to infinity and does not show any front or back focus. But once it hits infinity, it will not move out without a manual nudge on the focus ring. That issue also prevents me from being able to use Focal on it as the software can't focus on the target after defocusing to infinity - I've tried several times and the fully automatic test fails almost immediately. Do you think that's still something that the Sigma dock would be able to assist with? I've contacted both Sigma and the seller (Camera Land) for support, but would obviously much prefer if there's a quick and easy fix!
 
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jreach11 said:
Viggo said:
Check the other 50 Art threads and you'll see this happens to others as well. You can buy the docking and adjust different afma values for different distances first. But since people say they have copies with zero issues and non of us with faulty ones can get them to work no matter what, send it back while you can.

Thanks Viggo. I read through the other threads and think my issue is a bit different from yours and Eldars (and others). Mine is that the autofocus does not move at all out of infinity after focusing on a far away object then trying to focus on a closer object. The autofocus works great if not focusing to infinity and does not show any front or back focus. But once it hits infinity, it will not move out without a manual nudge on the focus ring. That issue also prevents me from being able to use Focal on it as the software can't focus on the target after defocusing to infinity - I've tried several times and the fully automatic test fails almost immediately. Do you think that's still something that the Sigma dock would be able to assist with? I've contacted both Sigma and the seller (Camera Land) for support, but would obviously much prefer if there's a quick and easy fix!

It sounds mechanical to me, and then repair or exchange is the options I'm afraid.
 
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