Strange bokeh? GH5 with Leica DG 100-400 lens. Hand-held at 100mm F5, 1/1000 sec, dual2 stabilization on. Is this a stabilization artifact on the left side in the foreground? There was...

DHThomas Loc: Baton Rouge, LA

GH5 with Leica DG 100-400 lens. Hand-held at 100mm F5, 1/1000 sec, dual2 stabilization on. Is this a stabilization artifact on the left side in the foreground? There was a slight breeze that could have moved the shrubbery but not the PVC bird.

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rgrenaderphoto Loc: Hollywood, CA

Could be. What, at 1/1000 sec shutter, is going on to the left of the beak?

GoofyNewfie Loc: Kansas City

rgrenaderphoto wrote:

Could be. What, at 1/1000 sec shutter, is going on to the left of the beak?

Looks like he's smoking something illegal.
Odd-looking for sure!

DHThomas Loc: Baton Rouge, LA

Using a wider lens at two focus points, here is the subject and the foreground shrubbery to the left:

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DHThomas Loc: Baton Rouge, LA

Good one!

CO

If that's in your backyard. You could set up that shot again. Take more photos when the wind is calm. See if that makes a difference.

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

DHThomas wrote:

GH5 with Leica DG 100-400 lens. Hand-held at 100mm F5, 1/1000 sec, dual2 stabilization on. Is this a stabilization artifact on the left side in the foreground? There was a slight breeze that could have moved the shrubbery but not the PVC bird.

That's what happens when bokeh is moving in the background. No problem.

E.L.. Shapiro Loc: Ottawa, Ontario Canada

When using a long focal length at a wide aperture, out of focus objects very close to the lens can cause such patterns, just like the shape of you diaphragm blades determine the shape or look of out of focus elements in the background. Movements of theses objects can case a secondary or double image or sharpening in post processing can sometimes exaggerate the effect.

Try an experiment- make a similar shot- long focal length setting on you zoom- place a few twigs or foliage very close to the lens and observe the results. The "bokeh" as you call it will take on the shape of the twigs.

PhotonHog Loc: Annapolis

Hmmmmm. This is NOT image blur, not at 1/1000 sec or a focus problem. The bird is in perfect focus. And being a Leica, I really doubt it is something from a cheap lens. This looks like a real fringe pattern, or interference bars of some sort. It is close to the lens, so the DOF does not cover it. It is odd that this effect covers such a large area. It could be an effect from some kind of reflected light coming back into the lens causing an image shift. Hmmmm again.

Novicus Loc: north and east

PhotonHog wrote:

Hmmmmm. This is NOT image blur, not at 1/1000 sec or a focus problem. The bird is in perfect focus. And being a Leica, I really doubt it is something from a cheap lens. This looks like a real fringe pattern, or interference bars of some sort. It is close to the lens, so the DOF does not cover it. It is odd that this effect covers such a large area. It could be an effect from some kind of reflected light coming back into the lens causing an image shift. Hmmmm again.

" This looks like a real fringe pattern, or interference bars of some sort."

Could be it.

wdross Loc: Castle Rock, Colorado

DHThomas wrote:

GH5 with Leica DG 100-400 lens. Hand-held at 100mm F5, 1/1000 sec, dual2 stabilization on. Is this a stabilization artifact on the left side in the foreground? There was a slight breeze that could have moved the shrubbery but not the PVC bird.

Depth of field blur, bokeh or no bokeh, along with wind movement of the shrub should produce this effect. If it is is too distracting, wait for less wind or use more depth of field. Hopefully this was not the only time you will have to shoot this.

dmsM43

You should try this again with the image stabilization turned off, and see if you get the same effect. At 1/1000 sec, you really don't need image stabilization anyway. I have an Olympus E-M1, and I have also noticed odd blurs with various lenses on some rare occasions, usually in a corner of the image. My cure for that has been to shut off the image stabilization when I'm using higher shutter speeds, and that seems to work.