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02-12-2011, 09:10 AM   #16
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Some "bokeh" discussion

Can't we just call it "blur"?

02-12-2011, 04:07 PM   #17
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Thanks for posting. What this tells me is composition is very important for good bokeh, maybe more important than lens
02-12-2011, 06:03 PM   #18
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QuoteOriginally posted by twitch Quote
Thanks for posting. What this tells me is composition is very important for good bokeh, maybe more important than lens
composition is really very important for good bokeh. but one must not forget that in situations or environment which is unavoidably harsh, a lens' bokeh characteristics comes into play. this is where the lenses differ themselves from each other on identical image composition.
02-12-2011, 07:16 PM   #19
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Here's what I thought. I've read the answer already but I didn't modify my answers.

#1
Hexagonal bokeh, looks like a normal focal length cheap lens that isn't known for bokeh, but the subject is close and the DOF is small so you get a pleasing result anyway. The background itself isn't bright and doesn't have too many features, so it is really hard to call this a good bokeh lens but it is smooth when used here.

#2
Nice round diaphragm, probably wide open without interference from aperture blades. The spheres have bright edges which are really bad. I don't like this one at all. The donut shape makes me think mirror lens, but really I think its just a bad lens.

#3
Looks great to me

#4
The background is too dark to really say anything. The photo is good, but I can't say much about the bokeh because there isn't much to work with.

#5
Not half bad, looks like a hexagonal diaphragm again. Looks like a blade might be a little stuck too. Nothing great, nothing offensive.

#6
Clearly a hexagonal diaphragm with straight blades, somewhat sticky in the SW part of the image (flipped on the lens). Not a winner, not a loser.

#7
I do not like this one. Straight blades, looks like a square aperture. Smooth but ugly.

#8
No way to know, looks OK from here.

02-12-2011, 10:24 PM   #20
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QuoteOriginally posted by Aegon Quote
Here's what I thought. I've read the answer already but I didn't modify my answers.

Thanks , and they were very good very analytical answers

#7
I do not like this one. Straight blades, looks like a square aperture. Smooth but ugly.
see below

.
Same lens , different set up
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02-12-2011, 11:16 PM   #21
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Good stuff all, and thanks for the thread Ken.
Studies in bokeh are sort of a mixed bag, both subjective and objective.
The problem is there's a whole world of both these measures as well as the nature of background matter (and its distance from the focal point) that complicate the issue.

I refer to this article for more in depth understanding of bokeh: Bokeh by Zeiss, and this tutorial online for basic info: Bokeh

Last edited by Ash; 02-12-2011 at 11:45 PM.
02-13-2011, 12:40 AM   #22
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Good, sucks, good, good, good, good, good.
02-13-2011, 06:51 PM   #23
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QuoteOriginally posted by noel Quote
But could it be due to the longer focal length ? Could FL be one of the missing links to great bokeh ???
Or does it just seem that way because FL effects DOF ? I really don't know.

02-13-2011, 06:54 PM   #24
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QuoteOriginally posted by Mike Cash Quote
Some "bokeh" discussion

Can't we just call it "blur"?
If they called vichyssoise cold potatoe and leak soup nobody would order it
02-14-2011, 01:32 PM   #25
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Even worse Ken, if lay people knew a lens was blurry no-one would buy it either.
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