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Author Topic: Sigma 50mm f/1.4 DG HSM Art  (Read 83045 times)

Sporgon

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #45 on: May 06, 2014, 04:59:05 PM »
Thanks macguyver, but I got to this point on my own. The issue was the scale; How much do I adjust AF/step on their scale. From what I understand, I can do a FoCal on each of the distances and then I can punch in the adjustment values pr. focal length. That way I get a much more accurate AF from close to infinity. The Sigma scale has 20 steps +/-, like FoCal, so I suspect they will match fairly well. AFMA pr. lens will then be the offset to that again.

If I only had more time ....

Since this is about images, here is my Local Swan mother, taking care of her 6 eggs. I don´t remember having shot birds with a 50mm before, but there´s a first for everything.
5DIII, 1/100s, f5.0, ISO 160
I missed this the other day and sorry I couldn't be more helpful, but I love the swan shot!  I can't believe you got so close.

This is Norway, lol, we go birding with uwa's.

Here's a recent shot with the 17-40 at 17mm  ;)


Nice!  Great shot as well, and you must have swans with the calm Scandinavian demeanor.  The last time I got that close to American swans, I was attacked, and yes, their bites actually hurt!  I suppose my Norwegian heritage (my last name is Anderson) didn't buy me any professional courtesy ;)

It would have been an interesting test for the multi coating of the 17-40 mm  ;)

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #45 on: May 06, 2014, 04:59:05 PM »

Shane1.4

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #46 on: May 06, 2014, 09:19:42 PM »
The lens just arrived from B&H. I currently have the lens my set at +12 on my 5Dmkiii. When the focus hits, I have never seen a lens so sharp. The color and contrast are soooo good. Here is a SOOC shot of my wife @1.4.
5D Mark III, 6D, 135L, 85L, Sigma 50 1.4 Art, Sigma 35 1.4 Art, 17-40L
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Shane1.4

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #47 on: May 06, 2014, 09:21:28 PM »
Help me out if anyone knows why the image didn't display vertical. Its the first I have ever posted on here.
5D Mark III, 6D, 135L, 85L, Sigma 50 1.4 Art, Sigma 35 1.4 Art, 17-40L
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sagittariansrock

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #48 on: May 06, 2014, 09:22:13 PM »
I suppose my Norwegian heritage (my last name is Anderson) didn't buy me any professional courtesy ;)

Maybe they thought you were Scottish (plus, the Mac in your name- yes, they visit CR).
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kaihp

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #49 on: May 07, 2014, 01:58:56 AM »
Hehe, yeah they are easy to approach, but they can take a swing also. My youngest wanted to give it a hug, got within half a meter before it gave her the evil eye and hissed, lol. My daughter yelled at it and I had to pull her away, she wasn't very scared of it.

I take your daughter isn't very old, since she's not scared on a swan? - In Copenhagen City, swans will lie on their eggs in some of the lakes, but they pack a pretty nasty bite - not that I've tried it personally, but from time to time there are stories about teenager boys regretting that they were taunting a swan too much, getting too close for comfort.

A former cat of mine tried to take on just a duck once. All he got was a nasty wound on top of his scull. He never tried a second time - ducks could walk past him within one foot and he would pretend not even to see them.

Viggo

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #50 on: May 07, 2014, 03:19:15 AM »
Yeah, she's two and half years old, but my son at 4 has always been cautious, she's not, lol.

Anyway, back on topic here. I resat my lens, did FoCal AGAIN, and went out for a test, turns out FoCal was way off. I now went from a +1 at 0,4m to +11, and from -3 to +9 at Infinity, and now the whole scale seems more in tune;

+11 @ 0,4m
+17 @ 0,7m
+11 @ 1,5m
+9   @ Infinity

And even though it's foggy outside it works quite well, indoors the same. It misses from time to time, for no reason, but it's more in focus pictures now and they are also evenly sharp. I think this will be an ongoing process, as it always is, but I think I'm getting there. So cast my rubbish calibration skills aside and it's beginning to turn into a winner here. Just expect a few wtf-misses, and it seems quite dependent on the type of light and the level of contrast and light, more so than any other lens I owned.

I have not tested anymore tracking today, so that is still an open subject.
« Last Edit: May 07, 2014, 03:21:00 AM by Viggo »
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mackguyver

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #51 on: May 07, 2014, 08:00:29 AM »
I like all the swan songs stories and funny comments, especially kaihp's cat pretending not to see ducks!

Viggo, I'm happy to hear that the lens is doing better now that you're getting it dialed in and I hope you're able to get past the technical part soon so you can get out there and just have fun shooting with it! 
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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #51 on: May 07, 2014, 08:00:29 AM »

Viggo

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #52 on: May 07, 2014, 08:12:22 AM »
I like all the swan songs stories and funny comments, especially kaihp's cat pretending not to see ducks!

Viggo, I'm happy to hear that the lens is doing better now that you're getting it dialed in and I hope you're able to get past the technical part soon so you can get out there and just have fun shooting with it!

Thanks! Hopefully it's pretty much sorted now, fingers crossed. Went out this morning and found another swan, lol. I was going to sit down for a better angle, but ended up not seeing the eggs, and the swan was quuuuite edgy so wanted to be ready to move  ;D Think it was wide open.
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candyman

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #53 on: May 07, 2014, 11:57:28 AM »
I just got the 50Art.
It is raining outside. And indoors I could not find a model....so I just got those 2 guys......and for once they have nothing to say....because this is an awesome lens!
Maybe not the best example but I just started to play with the lens.
The more you look, the more you see ─ Robert M. Pirsig


Eldar

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #54 on: May 07, 2014, 12:01:46 PM »
I just got the 50Art.
It is raining outside. And indoors I could not find a model....so I just got those 2 guys......and for once they have nothing to say....because this is an awesome lens!
Maybe not the best example but I just started to play with the lens.
Started competing with cat images, are you??  ::)
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Dylan777

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #55 on: May 07, 2014, 12:02:15 PM »
I just got the 50Art.
It is raining outside. And indoors I could not find a model....so I just got those 2 guys......and for once they have nothing to say....because this is an awesome lens!
Maybe not the best example but I just started to play with the lens.

Return it...AF seems off. The subject on the right is oof ;D

Congrats....on your toy
« Last Edit: May 07, 2014, 12:09:09 PM by Dylan777 »
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candyman

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #56 on: May 07, 2014, 12:11:59 PM »
I just got the 50Art.
It is raining outside. And indoors I could not find a model....so I just got those 2 guys......and for once they have nothing to say....because this is an awesome lens!
Maybe not the best example but I just started to play with the lens.
Started competing with cat images, are you??  ::)


The cat was running after gonzo  8)
The more you look, the more you see ─ Robert M. Pirsig


candyman

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #57 on: May 07, 2014, 12:13:25 PM »
I just got the 50Art.
It is raining outside. And indoors I could not find a model....so I just got those 2 guys......and for once they have nothing to say....because this is an awesome lens!
Maybe not the best example but I just started to play with the lens.

Return it...AF seems off. The subject on the right is oof ;D

Congrats....on your toy


 ;D
Thanks
Hope to have some more time and better weather on Friday
The more you look, the more you see ─ Robert M. Pirsig


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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #57 on: May 07, 2014, 12:13:25 PM »

Eldar

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #58 on: May 07, 2014, 02:15:55 PM »
I have been playing a bit more around with mine and I still get decent results. I have tried to provoke the AF, by shooting in dim light indoor (ISO25600) and outdoor in overcast and a drizzle. I have used center single point AF and AI servo. Every time I have decent contrast, AF is spot on. I shot from MFD to infinity and I believe that in those cases where AF missed, it probably would have with other lenses also.

So far this lens has a much better AF than my 35 Art, so I cross my fingers and hope it will stay like this over time. The 35 Art didn´t.
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TWI by Dustin Abbott

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #59 on: May 07, 2014, 04:35:06 PM »
B&H is going to send me both the 50 Art along with the older Sigma 50 so I can compare them side by side.  I don't own the Sigma dock, and so I am wondering how much of a factor that is going to be to getting accurate AF from the newer lens.

Do I need to have them send me the dock, too?
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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #59 on: May 07, 2014, 04:35:06 PM »