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Author Topic: Sigma 50mm f/1.4 DG HSM Art  (Read 79490 times)

Eldar

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #30 on: May 01, 2014, 02:32:45 PM »
Here is this year´s first lily of the valley. Primarily to look at bokeh and AF. Single AF point on the lower two flowers.
5DIII, 1/400s, f2.0, ISO160
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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #30 on: May 01, 2014, 02:32:45 PM »

mackguyver

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #31 on: May 01, 2014, 02:44:53 PM »
Eldar, here some links that might help (?) and the photos look nice - look forward to seeing more and the Otus comparison when you have more time.
http://blog.sigmaphoto.com/2013/usb-and-sop-demo/

http://www.lensrentals.com/blog/2013/06/sigma-optimization-pro-and-usb-dock
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Eldar

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #32 on: May 01, 2014, 04:18:05 PM »
Eldar, here some links that might help (?) and the photos look nice - look forward to seeing more and the Otus comparison when you have more time.
http://blog.sigmaphoto.com/2013/usb-and-sop-demo/

http://www.lensrentals.com/blog/2013/06/sigma-optimization-pro-and-usb-dock
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
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Viggo

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #33 on: May 01, 2014, 05:53:20 PM »
I did try one shot tonight, and yeah, your right, it's pretty much flawless in 25600 1.4 1/125 light. It's just kids faces that are so difficult.

I'm happier with the lens for every shot.
1dx, 35 L II, 135 L, 70-200 f2.8 L, Profoto B1

aalbert

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #34 on: May 01, 2014, 08:14:25 PM »
Spent a few minutes in the USB cradle, and then shot the following… Going to zero out the setting tonight, and run it against FoCal..

Anyway, shot at f1.4, 30 minutes before sundown. Only adjustment to the shot were to tweak the exposure.

Hope to get more meaningful shots once it is all lined out.
Camera: 6D w/VG, T2i w/VG
Lenses: 24-105L, 70-200 f4, 100L Macro, 100-400L,  28-135, 40mm Pancake, Tokina 11-16, Sigma Art 50mm 1.4
Flash: 580EX / 550EX, LumoPro 160, with Pocket Wizards, Broncolor Studio Strobes, Alien Bee 800/1600s, Kacey Enterprises Beauty Dish, Westcott Apollo Orb

wickidwombat

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #35 on: May 02, 2014, 11:02:06 PM »
QUESTION: I have just connected the docking for the Sigma and wanted to go through the 4-distance focus adjustment. But I realized I do not have a clue what the scales are. How did you determine how much you adjusted for each distance?

I set the camera on a tripod with a target stuck to a tower speaker
then measured from the target to the mark on the camera body that indicated the sensor plane
i set it at 0.4m 0.7m 1.5m and did a bunch of test shots with each

realised i only needed to do 1.5 so set it there and just adjusted up and down till i was happy just reviewing the SD card images in bridge after each set of images to check with the magnifier.

was pretty quick
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Viggo

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #36 on: May 03, 2014, 05:49:47 AM »
I did a quick adjust to the 4 distances just now, and after that the lens hits MUCH better overall, so I'll be doing it properly soon. HOWEVER, did any one else experience the lens start to do a sliiiight squeekybeepy sound, like the af needed a little lubrication after adjustment??

*EDIT* There is also a bug with the 1dX that when you use the AF-ON button, but 2 out of 10 times if you push the shutter button  halfway and then the AF-ON it won't focus until you release the shutter button. I hope they fix this very soon.
« Last Edit: May 03, 2014, 05:54:49 AM by Viggo »
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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #36 on: May 03, 2014, 05:49:47 AM »

Viggo

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #37 on: May 03, 2014, 03:02:26 PM »
Does anyone know if the Sigma lenses can take advantage of all the crosstype and the dual cross points that the 1dx and 5d3 has? It seems to me that the precision and ability to track and lowlight AF is way worse with the Sigma. It just don't grab focus unless there is really good light/contrast (with faces). Any static subject is never an issue.
1dx, 35 L II, 135 L, 70-200 f2.8 L, Profoto B1

aalbert

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #38 on: May 05, 2014, 01:51:59 AM »
Couple more shots with the Art 50 today… f1.4, ISO 100, 6D.

No sharpening, just blemish removal and smoothing of skin.

Focal point was the left eye.

Model Credits to Raquel Romans - http://instagram.com/raquelromans



Camera: 6D w/VG, T2i w/VG
Lenses: 24-105L, 70-200 f4, 100L Macro, 100-400L,  28-135, 40mm Pancake, Tokina 11-16, Sigma Art 50mm 1.4
Flash: 580EX / 550EX, LumoPro 160, with Pocket Wizards, Broncolor Studio Strobes, Alien Bee 800/1600s, Kacey Enterprises Beauty Dish, Westcott Apollo Orb

e-d0uble

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #39 on: May 05, 2014, 07:42:12 PM »
For wide open shots those are quite sharp.  Very very nice.  Lovely model as well.

Couple more shots with the Art 50 today… f1.4, ISO 100, 6D.

No sharpening, just blemish removal and smoothing of skin.


Focal point was the left eye.

Model Credits to Raquel Romans - http://instagram.com/raquelromans





wickidwombat

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #40 on: May 05, 2014, 09:04:16 PM »
Working pretty well in servo mode too I'm super happy with this new lens
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mackguyver

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #41 on: May 06, 2014, 03:53:40 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.
More than most, less than some

Viggo

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #42 on: May 06, 2014, 04:36:42 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  ;)

1dx, 35 L II, 135 L, 70-200 f2.8 L, Profoto B1

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #42 on: May 06, 2014, 04:36:42 PM »

mackguyver

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #43 on: May 06, 2014, 04:48:35 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 ;)
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Viggo

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #44 on: May 06, 2014, 04:58:46 PM »
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.
1dx, 35 L II, 135 L, 70-200 f2.8 L, Profoto B1

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Re: Sigma 50mm f/1.4 DG HSM Art
« Reply #44 on: May 06, 2014, 04:58:46 PM »