I thought some people here might find this curious:
It is interesting to see 5[!] images of the aperture.
Pentax D FA 100 mm F2.8 Macro (not "WR") @ f/5.6
(The lens has 9 elements in 8 groups.)
Some other images from this setting showed only 4.
Never mind the central part of the photo - this is one of the images to be
deleted. I did not crop it out just to show the context of how the image
was taken:
http://42graphy.org/misc/ApertureImages/ApertureImage_IR09244.jpg
I cannot say that I _fully_ understand how all these images are formed, -
especially after looking at this photo:
http://42graphy.org/misc/ApertureImages/ApertureImage_IR09238.jpg
This has up to 8-9 aperture spots, but some of them are motion-blured.
The camera was hand-held, with the motion reduction enabled.
I am guessing that the motion-blur comes from the camera shake, not
compensated by the sensor. But it also makes me wondering if all these
aperture images are effectively just the same single image - due to a
reflection from the sensor that moves as the sensor compensates for the
camera shake.
Any thoughts?
Cheers,
Igor
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