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next PZ lens test report: Sigma 50mm f/1.4 DG HSM | A on APS-C
#1
Let's start the discussion of this lens with the APS-C teaser ... ;-)

 

http://www.opticallimits.com/canon-eos/8...rt_eosapsc

#2
Under bokeh you have:

"...bit of a mixed back." I think you meant 'back' -> 'bag'.

 

Pitty it is not APO like the otus Smile
#3
"There's a very slight focus shift when shopping down."

 

Good one - never thought of shopping down Big Grin

 

#4
And this one is even a rented lens ...  Rolleyes

#5
A friend of mine has the 35mm f1.4 Art and it's such a great lens. And now Sigma has this 50mm.

 

How did Sigma get ahead of Nikon like this? I read that the Sigma engineers could have made this even sharper than the Otus but that they wanted higher local contrast and sacrificed overall sharpness to get it.

 

Does anyone know if Nikon's AF fine tune will recognise this lens?

#6
Quote:A friend of mine has the 35mm f1.4 Art and it's such a great lens. And now Sigma has this 50mm.

 

How did Sigma get ahead of Nikon like this? I read that the Sigma engineers could have made this even sharper than the Otus but that they wanted higher local contrast and sacrificed overall sharpness to get it.

 

Does anyone know if Nikon's AF fine tune will recognize this lens?
Sigma are the leading opticians in my view out there at the moment making esoteric lenses at real world prices and they are beating the pants off Canikon simply because they are prepared to use latest optical technology to take on all comers and beat them, including Zeiss and Leica.

  The $11,000 Leica  F0.95 is a cult lens (resolution wise nothing special) in Leica-land, but that is an island culture. The Zeiss Otus to be honest, is probably the "king" being a true APO design and will probably beat  the competition optically, but with it's price tag, manual focus and it's gargantuan size it's not going to find itself into many homes. The Nikon is just outdated and overpriced, which leaves the Sigma the outright winner, being just a sniff short of the Otus optically, while being lighter and having auto focus, plus having the base station for fine tuning AF at three different distances, it's only significant shortcoming being  a slightly rough front bokeh.

 A home run! 
#7
Of course  seems good, however there's no point of having razor sharp f1.4 lens if focus isn't accurate, for this lens focus is a true killer, so how does it perform on this side ? read this is being the weak point of the  sigmas

#8
Interesting opinions of folks who haven't tried the lens - or know it just out of dozens other "tests"  Rolleyes

 

A couple of weeks ago I took it for a first walk, I had also two Merills with me (those with the more nervous bokeh  ^_^ ). It's sometimes hard to tell, which was D800 and 50/1.4 Art and which is the DP3 with another 50/2.8 Sigma.

 

But I think, it was obvious to Sigma: If they want to make their cameras look good, they need super lenses, so why not testing them with their own sensor? And testing every lens 100% instead only a few of a batch? Fortunately, the 50/1.4 Art benefits of fast AF and most of the time accurate. The pictures which are not, are unclear if it's the lens, the AF system or the photographer or all three in combination. Nikon D800 /E are not famous for always spot on AF. So I will start to look for lens probs as soon as I get a more reliable AF system.

 

[Image: _DSC3344-M.jpg]

 

Just like to say, it's already a crop. Crop in large size

 

What I've seen from the Nikon 58/1.4 is super bokeh and lousy sharpness wide open for this kind of price tag.

And besides, you can adjust it at 4 (not 3) different distances.

#9
Quote:Of course  seems good, however there's no point of having razor sharp f1.4 lens if focus isn't accurate, for this lens focus is a true killer, so how does it perform on this side ? read this is being the weak point of the  sigmas
 

Well, it just shows a conceptual weakness of DSLRs. RSAs are fairly normal and DSLRs cannot compensate this.

However, let's be real - the bokeh fringing samples are taken at close focus distances. What you can see there in terms of RSAs it is amplified.

As far as general focus issues are concerned - yes, Sigma is somewhat worse here than the others but then they offer the USB dock for fine tuning.
#10
No, they are not "worse" Klaus. Shall I post an overview of the AFMA for my lenses? It doesn't make a lot of sense, others would show other values. Ranges are from -10 ... +14 and those extremes are Nikkors. 11 lenses and 4 of them Sigmas. And the Sigmas are usually very close to 0. If anything, the Art series is more accurate than the genuine Nikkors.

 

If you're referring to the reliablity of AF, it's a different story but I would not say the rate of missed focus is significantly lower with Nikkors

  


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