sensor/lens defect or optical illusion?

[MoMonkey]

Hi,

I have a new Nikon D750 and after several outings I have found that a few images (out of maybe 1500) appear to have a vertical line at approximately 1/3rd of the way across the image.
I'm not sure if this a sensor, lens or filter defect? Or am I just seeing things? Natural flares and reflections that just happen to line up (strange they occur at the same place though)?
I've linked the 3 instances with some heavy processing to try bring the line out.
What do you think?

https://www.talkphotography.co.uk/gallery/albums/defect-or-optical-illusion.2481/
https://www.talkphotography.co.uk/gallery/photos/1.16701/
https://www.talkphotography.co.uk/gallery/photos/2.16702/
https://www.talkphotography.co.uk/gallery/photos/3.16703/
https://www.talkphotography.co.uk/gallery/photos/4.16704/
https://www.talkphotography.co.uk/gallery/photos/5.16705/
https://www.talkphotography.co.uk/gallery/photos/6.16706/

Cheers

 

[beefybarn40]

Yes definitely something there, how many lenses have you tried and does it appear when using different lenses.

 

[HoppyUK]

Could be a shutter problem. Check the shutter speeds affected and photograph a plain wall that should show any issues more clearly.

 

[Tori_T]

You might want to have a look at this Nikon Product Recall notice. It looks like you may be affected.

 

[MoMonkey]

I have only noticed it in these three images which did happen to use the same lens, but I've not really been looking out for it until now as two of the suspect images came on the same day recently.
I'll do some testing against a plain wall with different lenses as advised, and check the serial number against the product recall.
Thanks for the suggestions.

 

[HoppyUK]

I have only noticed it in these three images which did happen to use the same lens, but I've not really been looking out for it until now as two of the suspect images came on the same day recently.
I'll do some testing against a plain wall with different lenses as advised, and check the serial number against the product recall.
Thanks for the suggestions.

If it's the shutter, and it can't really be anything else, then lenses won't make any difference. Shutter problems can be hard to pin down though if they're intermittent, only occur at certain speeds etc. I notice all your example images are verticals though, so be sure to check that.

 

[MatBin]

If it's the shutter, and it can't really be anything else, then lenses won't make any difference. Shutter problems can be hard to pin down though if they're intermittent, only occur at certain speeds etc. I notice all your example images are verticals though, so be sure to check that.

So the curtains will be going left to right, possibly bouncing or not operating correctly. When I saw the shots originally I missed they were vertical orientation and thought although likely to be shutter curtains they wouldn't be travelling the right way, being vertical shots they would be.
Any horizontal shots affected with horizontal lines?
Matt

 

[HoppyUK]

So the curtains will be going left to right, possibly bouncing or not operating correctly. When I saw the shots originally I missed they were vertical orientation and thought although likely to be shutter curtains they wouldn't be travelling the right way, being vertical shots they would be.
Any horizontal shots affected with horizontal lines?
Matt

Shutter could be running left/right or right/left, depending on which way the camera is rotated. It runs from top to bottom as the camera is held in normal landscape orientation, but the image is inverted by the lens so the sky is exposed last.

Shutter bounce usually shows up as a lighter band, so it looks like the shutter is speeding up over the darker areas, or rather, the gap between the curtains is reducing.