Mamiya 6- wtf? flowers instead of bokeh

[jbielikowski]

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?

 

[nksyoon]

Sorry, never seen that before.

 

[Brian Legge]

I'd wager your shutter blades are sticking a bit - not opening all the way up?

 

[crispy12]

I think it looks pretty cool

 

[Pablito]

I'd wager your shutter blades are sticking a bit - not opening all the way up?

sounds feasible.

 

[Giant Ginkgo]

Never seen that with mine, it definitely looks like either the shutter or aperture blades are having problems...

 

[sevo]

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.

 

[paulfish4570]

pinwheels!!!!

 

[Todd.Hanz]

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

 

[jbielikowski]

uh, shutter blades look clean.

 

[Aristophanes]

uh, shutter blades look clean.

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.

 

[rxmd]

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.

 

[Bob Parsons]

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.

 

[shadowfox]

I wonder if slower film would lessen the effect.

I have to say, though, those "flower" looks cool!