What is going on in this Shot?

[chkphoto]

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Digilux 3 with kit lens, 1/200 @ F22. Before I send this off to Leica NJ, can anyone comment on what I am seeing in this image? It's not the aperture blades.

 

Thanks in advance for any comments.

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[adan]

Which effect are you curious about?

 

The corners look like you were sitting in an igloo, shooting through the door. I'd call them reflections of some kind except that the one down by the streetlamp lower left is darker than the sky - reflected additional light should not make the sky darker. Light + Light = MORE Light. Were you using a lens shade?

 

The starburst from the sun is from the small aperture - diffraction rays. Common at small apertures.

 

The blue-green and purple blobs are lens flare.

[elgenper]

Digilux 3 with kit lens, 1/200 @ F22. Before I send this off to Leica NJ, can anyone comment on what I am seeing in this image? It's not the aperture blades.

 

Thanks in advance for any comments.

 

Your mitts? In our Swedish winter, this happens to me all the time... At wide settings, they can be surprisingly sharp.

 

Before sending the camera in, see if you can reproduce the problem. If not, I´d wait and see if it ever appears again.

[joppepop]

Yes, that were my immediate thought too, that looks like someone's mitts. Happens to me too.

[chkphoto]

Thanks for the replies. It's not "mitts" but it was a nice thought. Even though it may look cold, the temperature was about 50F. The lens shade was on but fitted properly. There was nothing else beyond or in front of the lens at that point. My first thought it was the reflections of the lens shade back onto the lens glass, all coincidental based on the sun's angle of attack into the lens at that particular moment. I will have to try and see if I can duplicate this effect.

 

The nice thing to see is that the kit lens has 14 aperture blades based on the amount of points from the "star" created from the sun.

 

More input is appreciated.

[elgenper]

...

The nice thing to see is that the kit lens has 14 aperture blades based on the amount of points from the "star" created from the sun.

 

Make that seven, not fourteen.... Each blade gives two rays, in opposite directions. So if there´s an odd number of blades, one will see twice as many rays. If the number of blades is even, rays will coincide so you see the same number of rays as there are blades.

 

Optics is complicated.....

[joppepop]

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The mitts thing was most for fun. The covering parts are somewhat symmetric, with major parts in the upper right and lower left corners. The other two corners are covered much less, but equally much. I guess you would have to use both your hand to get that effect.

 

What shape do the aperture blades have? It can't be some of them that are stuck? Maybe that's not very likely, and wouldn't that have been visible in the star around the sun anyway... Just thinking loud, I guess...

[chkphoto]

Make that seven, not fourteen.... Each blade gives two rays, in opposite directions. So if there´s an odd number of blades, one will see twice as many rays. If the number of blades is even, rays will coincide so you see the same number of rays as there are blades.

 

Optics is complicated.....

 

Thanks for the optic info. I never knew that. What is it that replicates them exactly and duplicates in the odd/even issue?

 

Anyway, I'll stop the guessing game - it was the lens shade. I replicated it today. I rotated it only but a few degrees from its secured position and there they were - the shades showing up in the various corners. I truly didn't know what it was when I first saw it. So thanks to those who gave it their best shot.