Nikon 85mm F1.8G I bought into the hype about how sharp it is. and " how its the best and sharpest"

Started Apr 7, 2013 | Discussions thread
DaSigmaGuy Forum Pro • Posts: 12,304
Re: Nikon 85mm F1.8G I bought into the hype about how sharp it is.

marike6 wrote:

DaSigmaGuy wrote:

tektrader wrote:

Well i finally got around to buying one after I sent back the Samyang.

Whats the deal wiith the CA ???   It also doesnt seem that sharp. I microfocus adjusted it today. Really its isnt that good.

Is my copy a dud? look at the photo and click look at it at 100%. The phot is a 60% crop, the focus point is the on the edge of the wood toward the right. Look at all the green CA on the left.................... and its red to the right (which was cropped off)

Is this lens a BAD copy ????????????

The Lens Align Ruler looks horrible, indistinct focus point at F1.8 and CA in both directions each side of the fuzzy focus point. I am really bummed by this.

Can someone post some 100% crops so I can see what their copy is like?

What you have now learned is that you should always do your own research before buying lenses and never simply buy into the hype.

Yes, research will tell you (see links below) that the Nikkor are about as good as it gets for portrait lenses.

I know its a bit late but I can tell you now that the Sigma 85mm f1.4 EX has 30% less barrel distortion that the G, 20% less vignetting wide open than the G, its sharper wide open than the G, its actually sharper at f2 that the G is at f2.8!  And what's more, it costs about half the price!

The Sigma has poor corners relative to the Nikkors, so I'm not sure what all this talk about sharpness is.

Yes, the Sigma isn't as good at the corners or edges of frame but the photozone results clearly show that the Sigma is considerably sharper in the centre of frame than the f1.8 G, and at every comparable aperture.  So as its a portrait lens, and you only need the centre for pro portrait work, the Sigma shouldn't be ruled out as a attractive lens option, unless of course your on a tight budget.  BTW, I couldn't afford the Sigma myself but then I don't need one as I have a Canon FD 85mm f1.2 L instead, which is about as good as it gets 85mm lens wise.

I found these figures quickly and easily by simply comparing their test results on Photozone, where they were both tested on a FF D3X.

So should you sell the Nikon and get the Sigma instead so you can not only get a better lens but also save yourself about £600 in the process?...That's entirely up to you.

I'm surprised you even brought up Photozone as both the f1.4G and f1.8G Nikkors received "Highly Recommended" awards and the Sigma 85 1.4 did not.

What's that got to do with anything?   How do you know the Nikon rep didn't simply grease the palm of Photozones tester/s to help them get an award?  Or that perhaps the Photozone tester/s simply has a heavy Nikon bias?

The 1.8 G only got its award for its far better bang per buck than the Sigma...The Sigma is almost twice the price so of course its not going to get an award.

However, as I mentioned before, the Sigma has 30% less barrel distortion that the f1.4 G, 20% less vignetting wide open than the f1.4 G, its sharper wide open than the f1.4 G and its actually sharper at f2 than the f1.4 G is at f2.8!  Now factor in the fact that the Sigma is about half the price of the f1.4 G and therefore it offers far more bang per buck, it should be the Sigma that has the highly recommended award, NOT the f1.4 G!

Lets face it, Nikon has a virtually unlimited corporate entertainment budget, so its extremely likely that the tester/s were simply promised free Nikon gear in return for a little "highly recommended" award here and there.  Sigma has no corporate entertainment budget whatsoever so of course they can't ever hope to sway an award like Nikon can.

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