Astrhori 85mm f/1.8 Autofocus (Nikon Z version)
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- เผยแพร่เมื่อ 19 พ.ค. 2024
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All pictures taken by me on a Nikon Z7.
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Gotta love the honesty of Astrhori : poor image quality? That's Right!
short and straight to the point. Great video! Thanks!
For a portrait lens, corner sharpness is less important and the pictures you showed us look terrific. You have to zoom in a long way to see the softness in the corners. When you displaye the test chart from a distance, the corners look sharp, at least on my monitor (!).
Did you refocus the lens for the corners? it seems that this lens suffers from a lot of field curvature. This would mean that the corners just wern´t focused -> gets better with fstop because depth of field increases. (this looks much worse on test sheets then on "real" images)
Yeah it depends a bit how you shoot. If you focus and recompose rather than compose and then focus, you might consistently be missing focus with field curvature this extreme.
i quite like the build quality of this lens! it’s a shame about the corner image quality, though
No reason to get this. If someone wants a cheap 85, the Viltrox is a better choice.
or the Meike 85mm f1.8, i love mine for EF mount
For me, soft corners is not necessarily a deal breaker. But it is hard to recommend this lens over the Viltrox offering.
I wonder if this lens has severe field curvature. Does it make any difference when refocusing in the corners?
Chris, do you pick the best corner, generally?
Many lenses and cameras arent perfect but "within spec"
If the lens is tilted a bit to the left, and the sensor a bit to the right, both are "within spec" and yet the resulting tilt may reach up to 1,5 degrees
I am pretty sure that he doesn't send them the relative positions of lens and sensor but rather just an image: "Quality is _this_ bad, did you send a defective lens?"
@@hendrickziegler8487 absolutely, however what many call decentering is oftentimes tilt. the lens itself is okay but tilted at the mount. all the lenses within are parallel to each other, but not to the sensor plane.
in my lens collection 6 out of 8 lenses were tilted when bought. Thank god, it's easily fixed by shimming at the mount.
When, for example, the right side is never in focus, no matter the focus ring position, now that's decentering and it's going back to the manufacturer. If the left side and the right side are capable of achieving focus, but at different focus settings - that's just DOF tilt, not a problem.
All lenses come a little tilted. If the tilt of the lens cancels out the tilt of your sensor, you're in luck. If not, shim it with aluminum foil or paper.
thanks for great sharing 👏👏
You have to refocus in the corners. The focus area of some lenses is curved.
Hi Chris! I have a question: since your sharpness test is standardized, do you have (or have you considered) a comparison tool to compare lenses side by side using your pictures? Switching tabs in a web browser is possible but certainly not ideal. Also it would be great to have the measurements of your chart for your fans to print just the stars and make tests ourselves, maybe we can even submit our results for the comparison tool. Some of us have unusual or vintage lenses, for example I have 3 Mamiya 7 lenses (50mm, 80mm and 150mm) and a very very capable scanning setup. Since these lenses can't easily be used on anything else than their intended body, the easiest way to have comparable data would be to test them myself with the same stars and sizes you use
In your longitudinal CA sample shots, was the focus shift due to a shift in your focus point or was it due to aperture-related focus shifting?
Another amazing lens review Chris! Would you perhaps consider reviewing the 7Artisan 35mm f1.4 mark ii for apsc? A lot of apsc users have been buying manual 35mm lenses for that nifty-fifty vintage experience and I hear this is one of the sharper ones! I would love to see what you think.
This is a classic portrait focal length, as such, corner sharpness is less critical unless planning to use for landscape. Weak close up image quality is a problem though
Yuk , thanks for the review .
What is the best 85mm for Nikon for portraits that you've tested?
Never understood why people want perfect corners when using wide open. Seems strange to me but at this point in my life, I guess I am a old school shooter since I started on film in 1999.
Two reasons that I can think of, though "perfect" is a bit of a stretch.
1: You can get good corners for a relatively low price, and you can do better for the same price or even less. The Meike 85mm f/1.8 is a good example of that, horrific color fringing notwithstanding.
2: Focusing at infinity with blurred foreground objects or in the dark, which can often happen when doing street photography (what I use my 85 for) or tighter landscape shots. God forbid anything is within the plane of focus but not in the center, you can absolutely see the smearing, even on a phone screen.
Are these all-encompassing reasons? No. Do they matter for a portrait shooter? Unlikely. But those were the first two I could think of.
I'm pretty curious how the old Nikkor 85mm F1.8G would compare to this. On the used market it would probably cost about the same, though you would still need an FTZ adapter.
The FTZ is one of the worst adapter ever made for Nikon Z. The Sony E to Nikon Z adapter, Canon EF to Nikon Z Fringer adapter, the Leica M to Nikon Z Techart adapter were all better made.
The FTZ is also worse than Nikon F to Sony E adapter such as the LA-FE2 because it doesn't support autofocus for AF and AF-D lenses whereas the LA-FE2 does. Bummer. I would avoid the FTZ if possible. If I want to adapt legacy lenses, the Canon EF mount Tamron 85mm f/1.8 would be a better candidate.
@@shang-hsienyang1284 I'm not complaining for FTZ II, mostly used for m42 lenses and Samyang 135 f2.
@@shang-hsienyang1284lol what the hashish are you smoking? My F mount lenses, especially my SIGMA ARTs were much more reliable than ever, focuses more accurately on my ZF than they were on my D850
I have that one. Use on Z6II. Sharpness is good, surprisingly even wide open. The only problem is longitudinal chromatic aberration and colour fringing at large apertures.
@@shang-hsienyang1284what are you talking about? How to avoid FTZ when someone has older lenses from previous Nikon F system? Only problem is lack of AF in AF-D lenses. But, frankly I couldn’t find sense for using lenses that old and on the newest and very demanding bodies.
appreciate the honest review. And indeed, the image quality here is just terrible even for the price. The only thing that would have led me to buy this is if they had added an aperture ring. it would’ve gone great with the Nikon ZF for a walk around lens.
Maybe they will consider a version two. but this is a no go.
Wow, that's a LOT of breathing
Well, time to change your factory specifications, Astrhori.
It looks like the major problem is huge amount of spherical aberration which is represented by heavy focus shift and dramatic lack of sharpness on the corners. Never seen short telephoto with visible astigmatism in the corners too. Shame.
They stopped producing e mount
All Nikon Z system owners...buy F mount SIGMA ART lenses instead and adapt it...Same price in the used market as these junks, but will give you waay waay better optical performance and built quality
Don't like the size and weight of nikon adaptor. Otherwise megadap etz21 pro with emount sigma is fine.
Why would anyone buy this?
In this case: You get what you pay for.
Thx for the test which confirms this is not so interesting. If you want Chinese lens with good quality Viltrox is for me better with a budget line and a more pro one. For my Nikon Z camera all my prime are from Viltrox. Nikons one are a little better but ugly/ too long and far more expensive. For zoom lenses the nikkor f4 are at reasonable prices and good too.
Weel, you get what you pay for, it's obvious.