D750 Light Leak videos

Vincent

Senior Member
Since a few days there are videos showing a "problem" with the D750.
I read some other people have taken some D750 cameras back for issues with light on the top right, tried some D750 cameras and found some without the issue. It seems an exaggeration to me, people want to find issues with the latest (cameras) to show off they found it and thus deserve attention. (which I'm sadly giving here) Anybody here that believes there is an issue, somebody who experienced it?
 

J-see

Senior Member
Yeah I got a massive light leak issue.

017-2.jpg

The lens cap was on and I even had the cam at home locked up in a drawer. Darn you Nikooooooon!!!

;)
 

AC016

Senior Member
Since a few days there are videos showing a "problem" with the D750.
I read some other people have taken some D750 cameras back for issues with light on the top right, tried some D750 cameras and found some without the issue. It seems an exaggeration to me, people want to find issues with the latest (cameras) to show off they found it and thus deserve attention. (which I'm sadly giving here) Anybody here that believes there is an issue, somebody who experienced it?

Big deal, it's the camera of the year. :rolleyes:
 

J-see

Senior Member
Now I'm using exposure preview; could it maybe be possible the dude had it enabled and light simply leaked in through his viewfinder?

The manual advises to cover it when shooting ex-preview on the LCD to avoid just that.

Considering the vids disappeared and we never heard of it again, I'd say he realized it too.
 

Vincent

Senior Member
Now I'm using exposure preview; could it maybe be possible the dude had it enabled and light simply leaked in through his viewfinder?

The manual advises to cover it when shooting ex-preview on the LCD to avoid just that.

Considering the vids disappeared and we never heard of it again, I'd say he realized it too.

I think your picture above clearly shows it is very well possible to shoot straight into the sun.

This guy seems to have understood exactly what happens:

If you can reproduce it easily, you can avoid it easily as well.
Still seems smart to check lifeview or the picture if you are not just in the case of the "reflection".

P.S.: just came across it looking for reviews
 

J-see

Senior Member
I had the cam next to me and have been waving it 10 minutes directly pointing at a light, every possible angle, wide lens. I wouldn't know what I could do to make light leak in easier but alas, besides the occasional lens flare, no plane of brightness.
 

J-see

Senior Member
Guess what, I could replicate it. If I use the live-view and move the cam below the light here, I get the plane of "light leak".

If I put my hand above the front of my lens, it disappears. I guess his 25 years of being a photographer didn't make him understand that if light hits the lens wrong, it causes all kinds of problems.

I'm not even touching the cam or blocking it, I use my hand as an extended lens hood and the light leak is gone.


Some more testing. I put the cam on a pod and moved it forward below the light using the same slight upward angle until I get the exact same "problem" they have. It's constantly there. The moment I change the lens from 18mm to 24mm, it is gone. Picky light leak. Just one finger above the front of the lens, and it's gone again.

Rather amusing.
 
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J-see

Senior Member
19mm AAAARGGG LIGHT LEAK. CRAPPY CAM.

028.jpg

18mm + magic finger

030.jpg

24mm

029.jpg

Anyone with a D750 and light leak problem, my right finger is for hire at a very reasonable price.
 
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J-see

Senior Member
And one more.

I put paper in front of the lens to maximize the light leak.

031.jpg

I closed down and underexposed to see what would happen. This shot is overexposed in post. Light still "leaks".

032_01.jpg

Then I put the lens hood on.

034.jpg

The shot overexposed in post.

034_01.jpg
 
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rocketman122

Senior Member
https://www.youtube.com/watch?v=LynWn0DvdO0

this is as clear as it gets. WOW!! crap. ok, D750 is out for now. this is huge for video as I plan on buying it as my 2nd stills camera to the D3s and first goto camera for video. but it is now out. will get a refurbed D800. wow what a HUGE fail. this is huge. you can try to downplay it but as I do backlit images and video, I cannot consider this camera. WOW nikon, im in awe of your crap QC.
 

J-see

Senior Member
https://www.youtube.com/watch?v=LynWn0DvdO0

this is as clear as it gets. WOW!! crap. ok, D750 is out for now. this is huge for video as I plan on buying it as my 2nd stills camera to the D3s and first goto camera for video. but it is now out. will get a refurbed D800. wow what a HUGE fail. this is huge. you can try to downplay it but as I do backlit images and video, I cannot consider this camera. WOW nikon, im in awe of your crap QC.

​Irony or sarcasm?
 

Horoscope Fish

Senior Member
https://www.youtube.com/watch?v=LynWn0DvdO0 WOW!! crap. ok, D750 is out for now. this is huge for video as I plan on buying it as my 2nd stills camera to the D3s and first goto camera for video. but it is now out. will get a refurbed D800. wow what a HUGE fail. this is huge. you can try to downplay it but as I do backlit images and video, I cannot consider this camera. WOW nikon, im in awe of your crap QC.
I just watched that video myself and I'm confused... Well I'm confused by all of this, actually. I'm trying to make this happen on my D750 and I can't. Does this happen only in Live View, or when using the viewfinder as well? I've got plenty of sun to experiment with but so far I can't make anything appear that even resembles what I'm seeing in that video. Can some use small words and explain how best to make this happen?

....
 

J-see

Senior Member
I just watched that video myself and I'm confused... Well I'm confused by all of this, actually. I'm trying to make this happen on my D750 and I can't. Does this happen only in Live View, or when using the viewfinder as well? I've got plenty of sun to experiment with but so far I can't make anything appear that even resembles what I'm seeing in that video. Can some use small words and explain how best to make this happen?

....

You see it clearly in live-view. It take some effort but has nothing to do with the cam. This is stray light that hits the lens at an angle and then bounces inside until it hits the sensor. I can only get it as 18mm with that lens so it has something to do with the glass inside. At a certain position it can probably bounce exactly right to get this effect.

If it was the cam, changing the zoom range should not affect it since the lens and cam don't change externally. Putting my hand between the stray light and the lens eliminates it.

You need to move the cam almost below a light source until it hits it at the right angle. Slightly upward.
 
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rocketman122

Senior Member
​Irony or sarcasm?

none, im dead serious and since this doesnt pertain to you, it isnt an issue. this is a huge problem for videographers though. huge. many videogs, like photogs shoot with backlit compositions. this isnt a problem only in direct sunlit but in shadow as well. basically in controlled setting it will be fine, but when youre in an environment like a wedding venue, you dont know what the lighting will be and basically can render a lot of footage unusable. maybe you dont understand the severity of the problem at hand. this is a big problem. I thought it was some faint line here and there but this is one gigantic flaw for videogs. there is no workaround, no clean it in PP. you shoot what you have to and even if you get flare, thats not a problem. the line it makes is a HUGE problem. like I said, you dont understand the severity of this problem because you dont shoot video. Im no pro at video but from shooting tons of weddings, I understand a lot. you can balk all you want, this is a big problem.
 
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J-see

Senior Member
none, im dead serious and since this doesnt pertain to you, it isnt an issue. this is a huge problem for videographers though. huge. many videogs, like photogs shoot with backlit compositions. this isnt a problem only in direct sunlit but in shadow as well. basically in controlled setting it will be fine, but when youre in an environment like a wedding venue, you dont know what the lighting will be and basically can render a lot of footage unusable. maybe you dont understand the severity of the problem at hand. this is a big problem. there is no workaround, no clean it in PP. you shoot what you have to and even if you get flare, thats not a proble. the line it makes is a HUGE problem.

If you checked the images I posted, you'd understand stray light is not light leak. Stray light can be a problem with all lenses and besides flare cause glare. I had it often with the diopters in the past.

This problem has more to do with people not understanding the limitations of their lenses than the quality of the cam.
 

Horoscope Fish

Senior Member
You see it clearly in live-view. It take some effort but has nothing to do with the cam. This is stray light that hits the lens at an angle and then bounces inside until it hits the sensor. I can only get it as 18mm with that lens so it has something to do with the glass inside. At a certain position it can probably bounce exactly right to get this effect.

If it was the cam, changing the zoom range should not affect it since the lens and cam don't change externally. Putting my hand between the stray light and the lens eliminates it.

You need to move the cam almost below a light source until it hits it at the right angle. Slightly upward.
Hmmm... Well, I don't have any wide lenses with me right now; 35mm is as wide as I can go. I'm duplicating, as best I can, what the guy in the video is doing but the bar thing is not happening for me.

Would a polarizing filter eliminate this?

Okay... Going to go back outside and trying again. Thanks for your explanation.

....
 

J-see

Senior Member
Hmmm... Well, I don't have any wide lenses with me right now; 35mm is as wide as I can go. I'm duplicating, as best I can, what the guy in the video is doing but the bar thing is not happening for me.

Okay... Going to go back outside and try again. Thanks for your explanation.

....

I tried it for quite a bit and didn't see anything until I walked with the cam below my kitchen light at that right angle. It has nothing to do with pointing at the light but being below another light source.
 

rocketman122

Senior Member
If you checked the images I posted, you'd understand stray light is not light leak. Stray light can be a problem with all lenses and besides flare cause glare. I had it often with the diopters in the past. This problem has more to do with people not understanding the limitations of their lenses than the quality of the cam.

sure thing Jsee. and it will never happen that I will shoot a clip of the groom&bride outside or indoors with light overhead or even at an angle that shows the leak, correct? youre talking nonsense. this is a major problem. the leak wouldnt even be such an issue if it wasnt for the very noticeable and unaesthic line. your images shows it indoors, you did see how intense and noticeable it is outdoors, yes?
 
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