What could cause this mark in the sky?
Feb 2, 2018 23:46:46 #
Using a Breakthrough Photography 10 stop ND filter here (expensive, nano coated, etc.), lens hood on the 24-70 lens, light is coming from behind me, and viewfinder closed for the 30 second exposure with a D810. First time using this filter. In most of my exposures from this afternoon with that filter there is that bright mark (don't know that it is a reflection really) in the upper left of each photo. There were no bright areas that could have caused a reflection that I could see at all. I took the ND filter off and the bright mark disappeared. Any way that ND filters can cause that? I am wondering if there is a manufacturing defect in this filter. The filter looks good though with no obvious defects. I am running out of ideas, thanks.
Feb 3, 2018 02:01:53 #
What if you rotate the filter 180 degrees? Does the bright spot change location?
Feb 3, 2018 02:06:19 #
ND does nothing, reflection in it does. Identify that.
And yes, by all means, as suggested above, check for a flaw on your filter.
And yes, by all means, as suggested above, check for a flaw on your filter.
Feb 3, 2018 03:08:10 #
sloscheider wrote:
What if you rotate the filter 180 degrees? Does the bright spot change location?
Great idea about rotating the filter, thanks. I'll try that in the next day or to and get back to you. I also have a 6 stop ND I can try and see if that shows anything. Thanks again.
Feb 3, 2018 03:08:56 #
Ernie Misner wrote:
Great idea about rotating the filter, thanks. I'll try that in the next day or to and get back to you. I also have a 6 stop ND I can try and see if that shows anything. Thanks again.
If it is a reflection it will not happen again.
Feb 3, 2018 09:17:22 #
Feb 3, 2018 09:17:24 #
Feb 3, 2018 10:03:03 #
Feb 3, 2018 10:12:08 #
You can just flip the little lever located next to the viewfinder. This will solve your problem.
Feb 3, 2018 10:12:10 #
You can just flip the little lever located next to the viewfinder. This will solve your problem.
Feb 3, 2018 10:58:28 #
It looks like a flaw in the filter, expensive though it may be. If it’s in every image with the filter but not without the filter, then it’s likely a flaw in the filter.
Feb 3, 2018 16:32:44 #
A reflection or a hole in the cloud cover. We see them in the sky over the Pacific Ocean on partly cloud days.
Feb 3, 2018 23:42:28 #
Possible light leak from behind the filter , some filter holders come with gaskets that are replaceable like the Haida filter holders for the 14 - 24 2.8 nikkor. I believe the Hitech system comes with a dark bag that comes over the back . Assuming it isn't a screw in .
Feb 4, 2018 02:23:56 #
Rongnongno wrote:
If it is a reflection it will not happen again.
Thanks, the problelms is that mark was in a lot of my different compositions with the ND filter on that day.
Feb 4, 2018 02:24:51 #
Kalina54 wrote:
Did you cover your viewfinder? Light will leak in here.
Thanks, but yes, the viewvinder was closed tight as I said in the post.
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