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Messages - Viggo

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31
Third Party Manufacturers / Re: Have you repaired your 50 Art?
« on: December 30, 2014, 02:07:02 PM »
Hi guys!

Just wondering if anyone here have had AF issues with the Sigma 50 Art and had it successfully repaired, not swapped for a new?

Mine is getting worse and I'm at the very last of my patience with it, so last chance is to perhaps send it for repair.

Thanks! :)

Mine has been perfect since day one. Got it fairly early. Have shot a lot with 50mm f/1.2 L before.

When you use such a shallow depth of field you have count on some misses no matter what if you are shooting something tight such as a portrait. I take 3 shots to be fairly sure I have at least one spot on. I'd say 2 of 3 in average are good in focus shots.

Also, we tend to use such extreme f-stops when the light is bad (and when the lens is most useful). Try testing the lens at good light and see if it makes a difference. Maybe also rent a Canon before you decide the Sigma that'is broken?

Good luck.

I'm not gonna list all the copies of all the different super fast lenses I have owned and/or used, but it FAR outnumbers the 2.8 and slower lenses I have used. And I shoot wide open 99% of the time. Let's just say we can rule out user error with this specific issue. I'm a strobist so I also use the large apertures in bright sunlight a lot also. You are right in what you say about thin dof and that it requires a bit more focus to nail 8) but it's not the issue here.

32
Photography Technique / Re: 5D Mark III AL Servo mode technique
« on: December 28, 2014, 03:22:47 AM »
That AF guide is brilliant.

I use One Shot once every month typically and I shoot a lot of stationary objects as well as moving subjects. Normally a single point for slight movement Case 1, a bit faster to single motion movement four or eight point expansion. And I have Case 6, slightly tuned manually, and 8 point expansion assigned to the * button (not sure if you can do that with the 5d or only 1dx).

Sometimes I switch to Spot AF, and sometimes I go 4 instead of 8 in the case 6 mode, but it covers a very wide range of movement with as little as possible tweaking in the field.

33
Third Party Manufacturers / Re: 50 Art "squeaky" AF sound
« on: December 27, 2014, 03:41:10 AM »
Thanks for the info and feedback guys, much appreciated. That means mine is fixable. Handing it in a couple of hours, probably gone until mid January, but if I can't use as is, I can easily wait if it works out 8)

34
Canon General / Re: What Canon stuff did you get for Christmas
« on: December 26, 2014, 10:41:57 AM »
I get to hand in the 50 Art for repair  ::)

35
Lenses / Re: What is your favorite lens/camera combo in your camerabag?
« on: December 25, 2014, 03:45:58 AM »
I spent 10 years buying and selling and trying lenses and the three I have now is just right for me, and impossible to choose only one of the three lenses. Perhaps a slight edge to the 50 Art IF it had AF that worked.

36
Third Party Manufacturers / Re: 50 Art "squeaky" AF sound
« on: December 24, 2014, 08:44:13 AM »
No squeaks.  Quiet shusshing sound. Accurate AF (after considerable tweeking).

Thanks! I found the dock to be "the devil", I zeroed mine out and did a +7 in camera and it worked a lot better, but it was quite a bit behind on infinity, so I though, easy fix! But as soon as I did a little front adjustment, it went to pieces with all other distances, and for some reason, became a lot more unstable. Tuned it back to zero and it started squeaking worse, so I don't know what happens, but it doesn't like the docking. Then again, it worked via docking on different values, but drifted and now it's no where near those values... I don't know.. Fingers crossed for Canon to release a 50 or the 35 L II... Handing it in for repair on saturday.

37
Third Party Manufacturers / Re: 50 Art "squeaky" AF sound
« on: December 24, 2014, 07:39:12 AM »

I have mine 50 Art since april 7th this year. No AF issues and no squeaking sound.


Viggo, I am so sorry to hear about your problems with the Sigma lens. It looks like you and Sigma have bad chemistry. I seems a good idea to step away from Sigma. Maybe you have more luck some years from now.

Thanks for the info :)

Yeah, if canon had anything remotely close the 50 Art I would never have bought it. But 50 is my most used focal and the one I enjoy the most, but it has to be 1.4 or something like that. I loved the Zeiss mp f2.0, but MF is not an option. And since the 35 L II NEVER comes, I'm out of options...

38
Third Party Manufacturers / 50 Art "squeaky" AF sound
« on: December 24, 2014, 06:43:05 AM »
YET ANOTHER 50 art AF issue thread, I'm so sorry guys...

The first 50 Art I had that didn't work had a slight squeaky sound, like high pitch "peeeep", when I ran the af back and forth between mfd and infinity.

The one I have now that worked up until recently, didn't have the squeak, and I had totally forgotten about my first having that sound, but today I heard it also in the new one and it has been on and off working for a while.

QUESTION:

Does your working 50 Art have a squeak?

Does your 50 Art with AF issues squeak?

I'm suspecting a defective AF motor on mine.

Thanks and Merry Christmas! 8)

39
Third Party Manufacturers / Re: Have you repaired your 50 Art?
« on: December 23, 2014, 05:10:51 AM »
Just wanted to update this thread. Be aware of your 50 Art, it has suddenly started to hit perfect again. No new values no new calibration, and yet the last couple of days and a few hundred pictures in all kinds of horrid light and every single shot is DEAD ON... How? Why? And wtf? I don't know. But I will keep using it and do some controlled shots to keep for later so I can check if it starts to act up again.

Padded cell next...

40
If canon still serviced and repaired the 1.0 L I would by it just as easy as the 200 f1.8 L. But they don't, so buying such and expensive lens and know it might break any day and it would be reduced to a paper weight made me pass on them.

41
Technical Support / Re: Repair cost cf card bent pin
« on: December 21, 2014, 11:59:50 AM »
Thanks for your comments. Any idea about warranty?

A pin only bends with excessive force, not by itself, so it is not covered by warranty.

42
Third Party Manufacturers / Re: Have you repaired your 50 Art?
« on: December 20, 2014, 04:30:38 PM »
Thanks for the tips!

I will hand it in for repair within the week, and I'll be sure to do a serious write up on how it behaves.

43
EOS Bodies - For Stills / Re: 5DIII AF Point Issue
« on: December 20, 2014, 04:23:17 PM »
Had a coffee and thought about it. And I'm choosing to ignore this, as it seems it's too small a shift to really make the focus shift and miss. But if I hit something above where I aim, I can tilt the camera a tad or activate the spot AF. It's either that or a padded cell  ;D

44
Third Party Manufacturers / Re: Have you repaired your 50 Art?
« on: December 20, 2014, 03:34:16 PM »
The thing I'm thinking is did you follow the earlier thread about 1DX not working properly in AF Servo and 12 fps in darker areas? I thought that there could be a remote possibility that since you are from Norway that within 6 months, the average luminosity of the scenery has changed drastically. This would be specifically compounded by using 50/1.4 which would naturally be taken to more darker areas than the other lenses.

I actually didn't ask for the 24-70 results. It's a F/2.8 case, thus the usage profile is likely different from 50/1.4, while 200/2 could encounter a bit more similar stuff. Nevertheless, since 200/2 doesn't show similar problems in similar illumination, then the problem is most likely the lens.

What I meant by variance is that people are saying that autofocus is not consistent regardless of the focus distance. The meaning of this, however, is not very clear to me. Does it mean you get front and back focus both within certain limits regardless of the distance, or that the amount of the front and back focus is random regardless of the original focusing distance?

For example, focus it to 5 metres, and the realized plane of best focus has a variance of +/-1 metres from it. Do the same to 10 metres, and you get +/- 1 metres or something like that from it too randomly. OR, is it so that you focus it to 5 metres, and the resulting plane of best focus is from MIN to INF, and when you go to 10 metres, the same happens?

But it does start to sound like mechanical wear of some focusing parts, or like a decoder wheel reader skipping some pulses randomly. However, it could also be the firmware, but it's a bit hard to believe since it works in the beginning. Warm and cold cycles could off-set something inside the lens too.

I haven't opened the lens yet so I don't know much about the inner mechanical construction. Perhaps Roger Cicala from Lensrentals would know something about this?

I shoot wide open with all lenses in any light ;)

Regarding distances and misses, it doesn't matter, if it's at MFD or Infinity or anything in between at any afma it will miss front or back, at random. And if I choose an afma value for one or more of the 4 distance I can calibrate with the docking, it doesn't really have any effect. I think that is because when it misses it can easily miss with much more than the afma scale can correct.

45
EOS Bodies - For Stills / Re: 5DIII AF Point Issue
« on: December 20, 2014, 02:49:43 PM »
Man, I can't catch a break... I use my 1dx very carefully, yet I have had so many issues and problems that I'm at the point where I want to throw it to the wall and be effin done with it.... I thought the idea with 1-series is to always be able to trust them. It's not like it's old and o should expect it... God d@mn it...

Thanks for the info Neuro, at least I know about this.

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