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Rookie
Posts: 1
Registered: ‎05-15-2017
Message 1 of 2 (91 Views)

Strange bokeh on Sony 35mm f1.8

[ Edited ]

Hi there,

 

I'm getting poor bokeh quality with my 35mm 1.8 and I'm wondering if this is normal. It almost looks more like motion blur than bokeh in some cases. I looked over some reviews and sample photos from elsewhere and they seemed okay.

 

These are two example photos shot with my 35mm at f1.8 using the a6000:

 

https://drive.google.com/file/d/0BwKPG1oaT2aiQXUwdVVSTEp2bHc/view?usp=sharing (check out the detail on the leaves)

https://drive.google.com/file/d/0BwKPG1oaT2aib2hGWjlWMHJ1eG8/view?usp=sharing (this one is pretty obvious)

 

What do you guys think?

 

Thanks,

KJ

 

 

 

 

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Professional
Posts: 1,660
Registered: ‎01-08-2015
Message 2 of 2 (71 Views)

Re: Strange bokeh on Sony 35mm f1.8

Motion blur is almost always directional, like a smear. The blur you're getting is very generalized. (Note the blur around his ID badge against his black shirt.)

 

Unfortunately, that lens isn't very sharp at f/1.8 except in the very center. In the second shot, that would be the guy's forehead, but even that isn't very sharp. I suspect that you've got a combination of factors at fault, the first being that, at f/1.8, that isn't a sharp lens, and the second being that it wasn't focused properly. Other factors might have contributed to the results you're getting, but I think that's the two main causes.

¹ The Lens is the Thing
² 'Full Frame' is the new 'Medium Format'
³ "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.

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