Author Topic: Sigma 105/1.4 Art  (Read 414 times)

Nikfuson

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Sigma 105/1.4 Art
« on: March 26, 2019, 10:11:07 »
Being weak souled I decided to treat myself to a little lens...more to follow...

Birna Rørslett

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Re: Sigma 105/1.4 Art
« Reply #1 on: March 26, 2019, 10:17:33 »
Big boys -- small toys :D

Wonder how it'll stack up against the AFS 105mm f/1.4E Nikkor. Which, by the way, works great on the Z6 and Z7.

Nikfuson

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Re: Sigma 105/1.4 Art
« Reply #2 on: March 26, 2019, 10:38:39 »
Big boys -- small toys :D

Wonder how it'll stack up against the AFS 105mm f/1.4E Nikkor. Which, by the way, works great on the Z6 and Z7.

Early signs re. abberation control looks extremly positive. Sharpness is almost out of this world. Still need to examine files though.

Frank Fremerey

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Re: Sigma 105/1.4 Art
« Reply #3 on: March 26, 2019, 15:02:38 »
Big boys -- small toys :D

My wife said when I bought another big lens (2/200VR): What do you want with this? It is thought for people with a small p*s!

I am still tempted by the Sigma, altough I got the 1.4/105E Nikkor when it shipped...

... interested to see your result, esp in comparsion to 1.4/105E...
You are out there. You and your camera. You can shoot or not shoot as you please. Discover the world, Your world. Show it to us. Or we might never see it.

Nikfuson

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Re: Sigma 105/1.4 Art
« Reply #4 on: March 26, 2019, 19:32:13 »
A few examples, first at proximal limit with AF point on centre and upper right.
Impressions so far; AF speed impressive for such large glass, will be put to test at sports event soon. Vignetting @1.4 is about 1.5 stops. Lo CA is well controlled, can only see tiny amounts of the cyan/magenta cast. Lateral CA can be classified close to non-existent. Near focus limit is in the order of 1 meter.
Field of curvature is flat a closer range (still need to assess the same for distal focus). Bokeh...well, find a 105'er that beats this one  ;D


Nikfuson

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Re: Sigma 105/1.4 Art
« Reply #5 on: March 26, 2019, 19:39:39 »
Roger Cicala at Lens Rentals Blog put the lens through OLAF (their optical bench test machine) and compared to the AF-S Nikkor 105/1.4E it came out like this:
(image courtesy of www.lensrentals.com)

Nasos Kosmas

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Re: Sigma 105/1.4 Art
« Reply #6 on: March 26, 2019, 21:00:38 »
Sharpness looks amazing :)
Photo with the drops is perfect, rock seems in the middle of the see
The only negative vignette in the corners

Have fun!

Erik Lund

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Re: Sigma 105/1.4 Art
« Reply #7 on: March 27, 2019, 10:42:30 »
Congratulations! Enjoy and share the images ;)


I see you rely on quite long exposures for the second image, raindrop crossing the frame, in camera stabilising, take care about camera movement if you really want tack sharp images and not just the 'lens is sharp' images - You get my point  8)


I found the Nikkor 104 f/1.4 AF to be quite slow as the other 1.4's even with pro body DSLR's
Erik Lund

Birna Rørslett

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Re: Sigma 105/1.4 Art
« Reply #8 on: March 27, 2019, 10:51:05 »
AF focusing with the 105 Nikkor on the Z's is slow yet precise and little or no hunting for best focus.

Erik Lund

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Re: Sigma 105/1.4 Art
« Reply #9 on: March 27, 2019, 11:21:30 »
Yes, a clear design choice I'm sure, and to some point necessary due to the technology of the gearbox design of the G 1.4 lenses.


I would suspect the AF (AFS) of the 200mm f/2 to be much faster on the Z6 and Z7, but I could of course be mistaken  ;)
Erik Lund