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Mamiya 6- wtf? flowers instead of bokeh |
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06-13-2012
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#1
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Jan Bielikowski
jbielikowski is online now
Join Date: Apr 2009
Location: Warsaw, Poland
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Mamiya 6- wtf? flowers instead of bokeh
could anybody please tell me is it normal? I remember it was f/3.5 in A mode with over-exposure warning LED blinking. The shutter tried to be quicker than 1/500 and thats the result?
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06-13-2012
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#2
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Registered User
nksyoon is offline
Join Date: Mar 2005
Location: Kuala Lumpur, Malaysia
Posts: 1,345
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Sorry, never seen that before.
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06-13-2012
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#3
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Registered User
Brian Legge is online now
Join Date: Mar 2010
Location: Seattle, WA
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I'd wager your shutter blades are sticking a bit - not opening all the way up?
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Shooting whatever I can get my hands on.
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06-13-2012
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#4
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Registered User
crispy12 is offline
Join Date: Aug 2011
Posts: 263
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I think it looks pretty cool  |
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06-13-2012
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#5
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coco frío
Pablito is offline
Join Date: Jun 2006
Location: Salsipuedes
Posts: 2,988
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Quote:
Originally Posted by Brian Legge
I'd wager your shutter blades are sticking a bit - not opening all the way up?
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sounds feasible. |
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06-14-2012
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#6
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Registered User
Giant Ginkgo is offline
Join Date: Feb 2011
Location: New York City
Posts: 47
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Never seen that with mine, it definitely looks like either the shutter or aperture blades are having problems...
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06-14-2012
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#7
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Fokutorendaburando
sevo is offline
Join Date: Oct 2008
Location: Frankfurt, Germany
Posts: 3,841
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At the shortest time, almost all the exposure will be done with the shutter blades partially closed - and leaf shutter blades do have a very distinctive shape.
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06-14-2012
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#8
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Registered User
paulfish4570 is offline
Join Date: Jan 2010
Location: On the Locust Fork of the Warrior River, Alabama
Age: 62
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pinwheels!!!!
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Paul
i seek to photograph the things not seen.
" ... faith is the assurance of things hoped for, the conviction of things not seen." Hebrews 11-1
"One eye sees. The other eye feels." - Paul Klee
"... For the things that are seen are transient, but the things that are unseen are eternal." - apostle Paul, 2 Corinthians, 4:18
"Film will only become art when it's materials are as inexpensive as pencil and paper." - Jean Cocteau
http://blackcreekjournal.blogspot.com/
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06-14-2012
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#9
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Registered User
Todd.Hanz is offline
Join Date: Jun 2004
Location: Texas
Age: 48
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Blades are sticking it looks like.
on a lighter note, you must have the "Oscar Barnak Floral Bokeh Version", highly sought after by flower-macro shooters the world over
Todd |
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06-14-2012
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#10
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Jan Bielikowski
jbielikowski is online now
Join Date: Apr 2009
Location: Warsaw, Poland
Posts: 1,016
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uh, shutter blades look clean.
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06-14-2012
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#11
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Registered User
Aristophanes is offline
Join Date: Sep 2011
Posts: 510
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Quote:
Originally Posted by jbielikowski
uh, shutter blades look clean.
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Is one even the tiniest, slightest bit at an angle or bent?
Or, the stickiness is on the outer edge, not visible. Could be something as simple as a human hair. |
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06-14-2012
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#12
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May contain traces of nut
rxmd is offline
Join Date: Apr 2006
Location: Kyrgyzstan
Posts: 6,023
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There is no stickiness, this is just the shape of the shutter blades.
Shutters don't open and close instantaneously. As Sevo pointed out, at 1/500s a significant part of the exposure is done through partially-closed shutter blades even if the shutter is working perfectly.
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06-18-2012
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#13
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Registered User
Bob Parsons is offline
Join Date: May 2006
Location: Cambridgeshire, England
Posts: 202
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Because part of the exposure is when the shutter blades are opening or closing they act as a stop increasing the depth of field. That's why the logos on the side of the building have ben resolved. If you had taken the picture with the lens stopped down more you wouldn't have seen the effect so much. At large apertures leaf shutters are inefficient and their efficiency increases as the lens is stopped down.
Bob.
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06-18-2012
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#14
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Personal Photography
shadowfox is offline
Join Date: Oct 2006
Posts: 7,652
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I wonder if slower film would lessen the effect.
I have to say, though, those "flower" looks cool!
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