Is there something wrong with this Batis?

Alithenake · Oct 13, 2015

Don't get me wrong. I love the photos that come out from the Batis 85mm f/1.8 mounted on my Sony A7s.

But, in some occasions I saw some strange lines doubling, or how should I call it? Well, below is an example. Look at the leaf on my girl's hand

And here a crop to see what I mean

7f5f196d6fda4558933783f50503f284.jpg.png

It's not the first time I see this behavior on this lens. I am already questioning myself whether to return it and go for the 90mm Sony G macro lens.

But still, those colors of the Batis. Damn. Though decision.

--

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brick33308 · Oct 13, 2015

I don't know about the leaf, but those are excellent shots!

brudy · Oct 13, 2015

It's depth of field. You're shooting at 1.8 and the focus is on her face, the arm is pointed towards the camera. The leaf being oof is expected in a situation like this. Actually, this is why people use fast lenses.

Alithenake · Oct 13, 2015

I felt your comment being a little mocking. I know what DOF is, I know what Bokeh is, the problem is the doubled lines at the top of the leaf. Look at the close-up detail. It's like it was moving or something, which is not the case.

Sorry if my English is not clear enough.

aLLin.

Alpha Photo · Oct 13, 2015

It is very strange (and clearly brudy didn't understand the issue). My first reaction was bokeh - doubling of lines can happen with lenses that have poor bokeh quality. I would be interested if others see this with their Batis lenses.

You may want to test this by taking pictures of power lines or something similar with a high contrasty edge at various degrees of FRONT AND BACK focus.

Really nice shots btw.!!!

JLim22 · Oct 13, 2015

Alithenake said:
I felt your comment being a little mocking. I know what DOF is, I know what Bokeh is, the problem is the doubled lines at the top of the leaf. Look at the close-up detail. It's like it was moving or something, which is not the case.

Sorry if my English is not clear enough.

aLLin.

--
http://www.allinpopescu.ro

Those are great pictures. And the out of focus blur looks fine to me. But I'm no where near critical as you. I usually don't zoom in 100% in non focused area. I just check to see if the bokeh is pleasing. Does your camera have image stabilization? Maybe that can affect the bokeh.

But I feel you're a bit too sensitive from your last comments. You'll probably think I'm mocking you as well.

With that said, perhaps you should just go with the 90 and be happy with your purchase.

edit:

The Batis 85 has image stabilization! Perhaps that's the cause?

I googled "double line bokeh" and found this.

OpenSearch Dashboards

bokehtests.com

Astrophotographer 10 · Oct 13, 2015

Beautiful shots. I take it the double line bothers you but from my point of view I didn't even notice it at all when looking at the image at first. Then when it was pointed out it was still - its fine by me.

Do other lenses do that? I can't say I have noticed one way or the other as the intention would be for it to out of focus and blurry.

I would also be interested if this is normal lens behaviour but it would not be a deal breaker for me.

Greg.

JimKasson · Oct 13, 2015

Alithenake said:
Don't get me wrong. I love the photos that come out from the Batis 85mm f/1.8 mounted on my Sony A7s.

But, in some occasions I saw some strange lines doubling, or how should I call it? Well, below is an example. Look at the leaf on my girl's hand

And here a crop to see what I mean

Pretty easy to fix that in post, don't you think?

Jim

--

the last word the last word - Photography meets digital computer technology. Photography wins -- most of the time.

Photography meets digital computer technology. Photography wins -- most of the time.

blog.kasson.com

Alithenake · Oct 13, 2015

I'm not sensitive at all. Thanks for your comments. But telling something like "it's DOF, you know this is why people buy fast lenses" seemed mocking to me

.

I'll take a look at your link, thank you sir!

Alithenake · Oct 13, 2015

Exactly my point. Poor bokeh quality on a Zeiss Batis is not something I would have thing of before buying it.

I'll take more shots in similar situations and look for a conclusion.

10x

Alithenake · Oct 13, 2015

I won't argue it's easy to fix. But I bought this mainly for it's bokeh, not for editing it ;p

Alithenake · Oct 13, 2015

Thanks. I don't look either 100% at the images. I'm not a pixel peeper

. But somehow it caught my attention directly and then I went to look 100% at the leaf.

I'll look more into that. Thanks for your kind comment!

brudy · Oct 13, 2015

Sorry, didn't mean to sound snotty about it.

Alithenake · Oct 13, 2015

Ok. It just felt that way

. As I said, I'm not that sensitive. So no heart-feelings

Alithenake · Oct 13, 2015

OMG. That's the answer. Stabilization and foreground objects! Just my case. Thanks, I'll try to reproduce it now that I know what may be the issue

JimKasson · Oct 13, 2015

Alithenake said:
I won't argue it's easy to fix. But I bought this mainly for it's bokeh, not for editing it ;p

Since it's so easy to fix, I would think that if you end up turning off stabilization all the time so this won't happen, you may be throwing the baby out with the bathwater.

Jim

No account anymore · Oct 13, 2015

Note that the background of the leaf, shown in the crop, is very bright. Having such double contours in high contrast areas is just normal, and has little with good/poor bokeh to do. These contours are the result of high contrast areas and subjects that are a bit out of focus.

Nothing to worry about.

vett93 · Oct 13, 2015

Alpha Photo said:
It is very strange (and clearly brudy didn't understand the issue). My first reaction was bokeh - doubling of lines can happen with lenses that have poor bokeh quality. I would be interested if others see this with their Batis lenses.

Indeed, the bokeh looks harsh and hard to me. It looks like someone uses the a large radius value in LR's sharpening function for the bokeh.

It would be nice that folks with both lenses (Batis 85mm and Sony 90mm Macro) can do comparison shots in this type of scenario.

Member said:
Really nice shots btw.!!!

Very nice photos indeed.

JLim22 · Oct 13, 2015

Yeah. I read the article and it looks that's what you're experiencing.

My guess is even with the 90mm macro, you might get similar results since it also has stabilization.

My B85 arrives on Friday. I will check to see how mine performs.

Lightshow · Oct 13, 2015

It's not unusual to get that effect with some lenses, it mostly depends on how close to the plane of focus that stuff is, in this case it's quite close.

Some lenses happen to have very smooth focus transition, some don't, they tend to look busy, just the way it is, the lens design that is... Looks like bokeh in front of the plane of focus is more busy than behind.

The lenses sharpness looks good to me, I bet they all render the same.

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####Where's my FF NEX-7 ?????

Is there something wrong with this Batis?

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