Canon 135mm f2 lens bokeh issue

[roey_yohai2]

<p><img src="file:///Users/roeyyohai/Desktop/Screen%20Shot%202015-12-04%20at%206.14.00%20PM.png" alt="" />Hi there - I have a problem with this lens - has anyone ever seen this before?<br>

when I'm shooting at daylight with leaves in the background, if they are at a certain distance, we get these slanted horizontal lines running through the bokeh in the image. </p>

<p>Any idea what's causing this? its worst when I use the 1.4x extender...</p>

<p>(Im trying to upload images but not understanding how to do it...help? mac os el capitan, google chrome)</p>

<p>Thanks for any help. Cheers,<br>

Roey</p>

<p><img src="file:///Users/roeyyohai/Desktop/Screen%20Shot%202015-12-04%20at%206.14.00%20PM.png" alt="" /></p>

[William Michael]

<p>I have not seen this before: the lines are not just in the leaves, they appear on the tree trunk also.</p>

<p>A few questions:</p>

<p>1. What is the Shutter Speed of the sample image?<br>

2. What is the Aperture of the sample image?<br>

3. What camera?<br>

4. Was/were there Filter(s) on the lens? If yes what filter(s), exactly?<br>

5. Was the camera hand held?</p>

<p>Thanks,<br>

WW</p>

 

[SCL]

<p>FWIW to me it looks more like a camera issue than a lens issue.</p>

[roey_yohai2]

<p>William, <br>

1/500th at f2.8, iso 200<br>

canon 5d mark3<br>

no filters except a Pro Optic MC-UV filter<br>

yes handheld. <br>

i was also using a 1.4x extender, the canon one, which originally I thought was the problem; but the same issue exists without the extender.</p>

<p>Stephen, the sharp parts of the image do not have this issue; and no other lenses have shown this to be an issue, so I don't think its the camera.<br>

I wish I could post more pictures but its limiting..is there another place to do that?<br>

Thanks guys -<br>

Roey</p>

[mark_ethridge]

Just to rule it out, have you tried it without the filter?

[William Michael]

<p>Thank you for answering.</p>

<blockquote>

<p>"Just to rule it out, have you tried it without the filter?"</p>

</blockquote>

<p>+1</p>

<p>My thinking is the filter is a possible cause at this moment, but, supplementary question (unlikely cause but thinking laterally): Were you near any High-Voltage power lines or Radio Frequency Transmitters?</p>

<p>WW</p>

<p>BTW - by way of mentioning familiarity: I have an EF 135 F/2L USM and both Canon Extenders EF MkII and two EOS 5 Series DSLR Cameras and I have used all possible combinations of the lens and the two extenders and the two cameras. </p>

[William Michael]

<blockquote>

<p>"I wish I could post more pictures but its limiting..is there another place to do that?"</p>

</blockquote>

<p>If you have the images posted somewhere else you can link to that site.</p>

<p>You can upload images (JPEG files with EXIF probably the best) to your portfolio:<br>

Go to "MY WORKSPACE" (top left hand of this page)<br>

Open up "Your Photo Portfolio"<br>

Follow the directions to upload Photos. I think that there is a limit per day for non subscribers.</p>

<p>You can add an image to a post on this thread as you have done: but a JPEG file with the EXIF intact is probably better than the png files that you've added.</p>

<p>WW</p>

[jim_service]

<p>My first thought is that there may be one or more defective blades in the diaphragm.</p>

[peter_langfelder]

I would suggest taking the lens off the camera and taking a good look through the lens. Look for possible dirt inside (hair maybe?), aperture defects etc.

[Robin Smith]

<p>Very weird. Never seen anything like this with my 135/2 (or any other lens). I think you have a processing defect (as in RAW processing). Did you use DPP, or Lightroom, or...? Been close to strong magnetic fields?</p>