Please Help.. light coloured band across pictures?

I have been using my Nikon D750 for over a year and a half now but have only just recently began to get this problem. A lighter, transparent crescent shaped band has appareared vertically in the right third of my pictures. I have absolutely no idea how to fix it or what would be causing it.

Good morning, and welcome to the forum. Not sure what might be causing the problem, but I am sure some examples would help. If you could upload some examples with the EXIF data someone will help you. It is best to reduce them in size to about 1000 mpix on the long sid and 72 pix/in to assure the EXIF data stays with the photo.

There are a lot of folks smarter than me that I am sure will give you some insights.

This is an example of the problem. Although Danno I have no idea how to provide the exif date with the image.

http://exifdata.com/images/1496926798.51_IMG_2469.jpg

Welcome to the forum. Do you have this problem with more than one lens? Does it happen on all pictures or just some?

Was the sensor cleaned prior to seeing this problem? Like Walt said, is it with every lens? If it is just one lens, look at the front and rear elements to see if there is a smudge. If it is will all your lenses, you might want to try getting your sensor wet-cleaned to see if that makes it go away.

Not sure, but it kind of looks like a piece of hair on your sensor.

Welcome aboard. Enjoy the ride.

I agree with the above posts. If it is on pictures with multiple lenses, it is something on the sensor. If it is with only one lens, it is something on the lens.

Blacktop said:

Not sure, but it kind of looks like a piece of hair on your sensor.

Click to expand...

Hair would show up dark, just like dust.

Since we don't know which lens was used, it's difficult to know what could be causing it. From the light, I'd guess it's a lens flare (specially if the lens is covered with a UV filter). Was the proper lens shade used?

Until we know if this was a one time occurence (could be on many pictures from the same session) with one lens or does it happen in different lighting situations, no one can know what is causing this.

You need all the facts to investigate properly.

Okay thank you everyone for your replies.

It is the same lens & appears on probably 90% off my last 200 pictures taken in the space of 2 days. Possibly 100% (but not as visible/noticeable). I am not currently using any lens filter. I have attached a link to a screenshot of my EXIF data. Hope this helps I'm not that confident on what I am doing !

http://exifdata.com/images/1496942976.78_IMG_2494.png

Do a Mirror Up For Cleaning and look to see if there's anything behind the mirror.

Which 50mm lens are you using? Have you tried a different lens? If so does the same thing happen?

I'd be inclined to say it looks like something on the lens... Have you examined the back of the 50mm 1.8 lenses rear lens element??? By the same token, with the caps off the lens, hold the lens up to the light and try to look thru the lens at the areas around the edges, and on the rear, you can manually move the aperture stub that the camera moves while looking thru it to see if you can see anything stuck in the aperture blades...

480sparky said:

Hair would show up dark, just like dust.

Click to expand...

Maybe it's a blonde hair.:indecisiveness:

50/1.8 wide open with the sun behind you. The band is brighter by a stop?

Interesting.

My guess is one of the lens elements has been knocked out of place.

The image you posted the link to is in bright sun, the first thing I thought was you were not using the lens hood which would allow reflections in the lens from off axis strong light sources.
Then I saw the image data and noticed the exposure aperture as f/1.8! that is allowing a lot of light in for which you needed very fast shutter speeds to expose. The lens is being saturated with light at f/1.8 and if no hood is used, I would expect more reflections than you are getting. Return to normal ratios of the exposure triad and I bet it disappears.....and use the hood, that is what it is for.
You were in Aperture Priority mode, so all you need to do is set it to f/8 and your would get sharper images with better color at those actions speeds and light level.

When deciding on an exposure mode, determine what element of the exposure triad is most critical for the shot. In this case it is the shutter speed since there is action. Then how fast is the action, moderate in this case, setting Shutter Priority to 1/1000 would safely freeze the action and and let the camera determine aperture. If you use Auto ISO, set the range limits but better, use fixed ISO based on the lowest needed for the conditions of light. in this case ISO 100 or 200 would assure the sharpest, least noisy images since you have lots of light. The variable left to the camera is only one, aperture. In any photo condition you will find 1, possibly two variables important to the exposure quality, and it becomes more critical of a decision the lower the light or the faster the subject.

Is there a possibility that you were using Live View? Light entering the View Finder can create those reflections also.