"Admirable" blur samples

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Archive 2008 · "Admirable" blur samples

georgweb
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p.122 #1 · "Admirable" blur samples

M42 Zenitar ME-1 on K100D - a two blade lens

Dec 20, 2009 at 12:26 AM

Gary Clennan
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p.122 #2 · "Admirable" blur samples

georgweb wrote:
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M42 Zenitar ME-1 on K100D - a two blade lens

hehe... Cool shot.

Dec 20, 2009 at 04:34 AM

Yakim Peled
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p.122 #3 · "Admirable" blur samples

georgweb wrote:
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M42 Zenitar ME-1 on K100D - a two blade lens

Nice pic but how can two blades form a circle?

Happy shooting,
Yakim.

Dec 20, 2009 at 07:17 AM

Jonas B
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p.122 #4 · "Admirable" blur samples

Yakim Peled wrote:
Nice pic but how can two blades form a circle?

They don't. I guess the two blades form a square opening thanks to being angled and then moved towards each other when closing down. I recalll something like that from an old Kodak Instamatic and there are probably many cheap P&S cameras equipped with simple aperture arrangements like that.

Dec 20, 2009 at 12:54 PM

Yakim Peled
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p.122 #5 · "Admirable" blur samples

If possible I'd love to see a picture of that.

Happy shooting,
Yakim.

Dec 20, 2009 at 12:58 PM

Jonas B
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p.122 #6 · "Admirable" blur samples

Yakim Peled wrote:
If possible I'd love to see a picture of that.

I would post one if I still had that Instamatic. Maybe somebody else? That is unless my logic and memory don't make a fool out of me of course. That happens...

Dec 20, 2009 at 01:02 PM

TWoK
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p.122 #7 · "Admirable" blur samples

Yakim Peled wrote:
Nice pic but how can two blades form a circle?

Happy shooting,
Yakim.

Whoever said apertures had to be circular?

Dec 20, 2009 at 01:28 PM

Yakim Peled
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p.122 #8 · "Admirable" blur samples

Well yes, Jonas already said it's a square. That got me intrigued. I'm used to circular ones or close to that e.g. octagonal in my lenses.

Happy shooting,
Yakim.

Dec 20, 2009 at 01:39 PM

mortyb
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p.122 #9 · "Admirable" blur samples

A900 + Samyang 85mm 1.4 @ 2.

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Edited on Feb 03, 2010 at 08:26 PM · View previous versions

Dec 20, 2009 at 02:19 PM

georgweb
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p.122 #10 · "Admirable" blur samples

Jonas is right and in fact you see quite a few of those apertures in older cameras like Olympus XA but also in television (watch out for the bokeh .-).

The blades have a rectangular cutout in each of them and so form the rectangular diamond shape that you see in the bokeh.

Not completely rectangular: f/2
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f/2 bokeh:
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Here’s the rest of those pics

Best, Georg

Dec 20, 2009 at 03:29 PM

Yakim Peled
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p.122 #11 · "Admirable" blur samples

Thanks. Never saw such a thing.

Happy shooting,
Yakim.

Dec 21, 2009 at 06:31 AM

mortyb
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p.122 #12 · "Admirable" blur samples

A900 + Samyang 85mm @ 2.0

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Edited on Feb 03, 2010 at 08:27 PM · View previous versions

Dec 21, 2009 at 01:03 PM

John Black
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p.122 #13 · "Admirable" blur samples

Some Zeiss 50/2 ZE on the 1Ds3; first image F5.6, the rest wide-open.

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Dec 21, 2009 at 04:45 PM

philber
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p.122 #14 · "Admirable" blur samples

Whew! Impressive shots, John. The one before last is stunning.

Dec 21, 2009 at 06:29 PM

James Burden
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p.122 #15 · "Admirable" blur samples

D700 + Sigmalux @ 1.4

Dec 21, 2009 at 11:07 PM

rtallent
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p.122 #16 · "Admirable" blur samples

One from this Fall that got by me; 5D Mark II with TS-E 90mm

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Dec 21, 2009 at 11:59 PM

ulrikft2
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p.122 #17 · "Admirable" blur samples

d700 + 105 2.5 ais @ 2.5:

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Dec 23, 2009 at 12:12 AM

Jim Schemel
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p.122 #18 · "Admirable" blur samples

ulrikft2 wrote:
d700 + 105 2.5 ais @ 2.5:

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Nice one.I like how the blue background goes well with the cool blueness of his eyes
-Jim

Dec 23, 2009 at 12:22 AM

ulrikft2
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p.122 #19 · "Admirable" blur samples

Hehe, the colors in my family (that is my father) are very wintery

thanks for the comment!

Dec 23, 2009 at 12:23 AM

RustyBug
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p.122 #20 · "Admirable" blur samples

Oly 28mm 3.5 @ 3.5 1/10
Bokeh Test
1D MK II N
Mixed lighting (flourescent overhead, halogen sidelit) AWB Setting

jpgs from camera via flickr

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Edited on Dec 23, 2009 at 03:12 PM · View previous versions

Dec 23, 2009 at 01:29 AM

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