I purchased a D7000 from Best Buy on Thursday 10/14/2010. I went out to shoot video and noticed that in areas of darkness or low light there were a few blue glowing pixels on the video. I continued my test and the glowing pixels were prevalent on every test video I shot that was in low or subdued lighting. The only time that the glowing pixels were not visible was when I shot in Standard Definition. I was able to duplicate this on every setting of video. To make a long story short I am on my third D7000 and they all have had this same issue however the glowing pixels are in different locations on the other two cameras. I find it hard to believe that I got three defective cameras but that's all that the best buy near me had so I cant go for number 4 yet to test. I ask that you out there with a D7000 to test your video under low or no light to see if you also have the issue. Place your hand over the lens and shoot a few seconds of video. If you have glowing pixels you will notice when played back on a computer or HDTV. You can actually see them on the D7000 screen also but due to its size it not as easy to recognize. Please if anyone else has seen this issue can you post a response or email me at jmco173 (at) yahoo.com. I don't know if I should go for number 4 or just return it until Nikon corrects the issue.
From your description, it does not sound like it could be a firmware fix. But that is just an educated guess. If it is sensor related, three cameras with the same flaw, it not a good sign. I am planning on buying one too. But before we throw out the baby with the bathwater, lets see what some others have to report.
Can you post a screen shot showing where the spot is on the screen? It might help others find it easier.
that video looks great and I dont see any of the pixels issues that i expierenced. however when i shot secene that had both light and dark areas it was much harder to see the "glowing pixels" they were there just hidden by the sourrounding areas of the video. the way I noticed was when I started the video in a pitch black room, I wanted to the test the cameras ability to adjust to the sudden brightness of the lights going on. the first 10 seconds were in complete darkeness and the glowing pixels were obvious. when the lights went on they were almost not noticeable. I probably would not have noticed them if i didnt start the scene in total darkeness. From that point on I stated multiple tests in both light and dark rooms. the same two spots always had the glowing pixels. After about 25 different test i returned the first camera and repeated the tests with the second and then third. they all had a few glowing pixels however no two cameras had them in the same spots. To make sure i wasnt crazy i did a test with the manager at best buy. they hooked the camera up to a 55 inch led tv and saw the same thing i did.
There have been several complaints on this issue in other photography forums so i am sure that nikon is aware. Nikon did not acknowledge there was a production issue but they did acknowledge that the glowing pixels in the video I sent them should not be there and it was most likely a defect in the image sensor. They told me to return the camera. All I can conclude is that there may be an issue in the production of the image sensor. It seems that not all D7000s have the problem but there are enough out there that do that nikon will soon have to acknowledge it. I returned mine ( third one) and will not be replacing it anytime soon. I am going to stick with my d300 for stills and my panasonic Hdc tm700 for video. I suggest you return yours too before the return policy from where you got it expires. Maybe you should try to exchange it at least once. Maybe you will get lucky and get a good one. Keep us posted.
The "glowing pixels" you're seeing are hot pixels. Nearly all camera sensors, new or not, will show them when you do dark frame exposures. You may not find any camera, D7000 or otherwise, without a few hot pixels when you test it the way you are doing.
After just reading your post I decided to test your theory I used my Sony HD camcorder. A canon point and shoot non hd And my iPhone4 video camera (720p) When covering the lens on all three they each exhibited a certain amount of noise but not like what I am experiencing with the d7000 The noise is best described as for lack of a better term jumping pixels while the D7000 has a few pixels that do not exhibit the same action as the noise. They are isolated and glow at a constant illuminantion. They do not flicker or jump. After further examination of the video they are actually blue glowing even in regular lighted situations however not noticeable if you are not looking for them. I still believe that it is clearly a flaw in the sensor and hope that it is not on all D7000. I have watched many YouTube video demos and had I filmed the same low light scenes that I have seen in the demos the blue pixels would have been very noticeable. That gives me some hope that I will find one that does not have this issue.
Please if some on this forum can do the dark room test and report back to me.
I don't get your point. You say "complete darkeness and the glowing pixels were obvious. when the lights went on they were almost not noticeable. I probably would not have noticed them if i didnt start the scene in total darkeness"
So how many times do we take videos in total ddarkness? If you don't see a problem with normal use, what is there to complain about? That's a little like saying that my car vibrates when I go over 150 mph, but I never go over 150 mph. Why not just enjoy the many marvelous things that the camera can do?
the glowing pixels are obvious in low light as well as complete darkeness. just more noticeable in complete darkeness. I am not willing to accept that just because I wont be shooting in complete darkeness I should live with this. I also would not accept that if my car shakes at 120 mph when it is NOT supposed to that i can live with it because i dont drive 120 mph.
There will be plenty of time where I will be shooting low light scenes and these pixels wiil quite frankly ruin the otherwise great low light video quality.
one should not have to accept a brand new product that markets itself as a prosumer product when it performs sub prosumer level. If this was a 200 camcorder maybe i could just accept that it is not top quality, but not from a 1500.00 Nikon "prosumer" DSLR.
I joined this forum for assistance from others who may already have this camera. If you have nothing to offer then please keep you comments off.
You may not shoot video in complete darkness, but you make shoot video where part of the scene is that dark and you don't want flickering pixels in your scene. The lens cap is just an easy test to find such distractions that will inevitably end up in a well exposed video later if there is a pixel problem.
If this is indeed a problem with the camera, I too would return the camera as being defective.
Every place I check, they are all sold out. Yet, you were able to make a few returns already. Maby you were getting the same camera back. Something sounds funny. You must really, really, be set on a D7000, to put up with all that, I would have moved on...
I don't want to inflame the issue here, but I'm in sympathy with the OP. I'm waiting for a D7000 body myself, and if it had noticeable hot pixels in dark scenes I'd likely return it. That could really ruin video of a kid's birthday cake, a sunset on a beach, fireworks etc.
Obviously no camera is going to be perfect. There are some things I'd live with and some things I wouldn't.
I would stop trying the same thing and wishing for a different result. If I were you, 2 is enough to convince me it's not a sample variation.
I don't have a visual on the symptom you described. I think it may be related to the video compression firmware. In near total darkness, there is virtually no signal, so the video compression module is basically working on the noise.
Have you shoot the video with a faster lens? Shot the same scene with 6fps stills and in video mode. If it doesn't show in stills, that means it has nothing to do with the sensor, it's the firmware, which could be corrected in the future if in deed there is an issue.
It can also be a simple issue with your settings. For now, there is no need to create more "open box" for no reason.
upon close further examination of the video i have already shot I was able to determine that the glowing or hot pixels acually appear on every file that I create regardless of the amount of light or lens type or ISO setting. bright scenes camoflauge the hot pixels but they are still there.
I was able to make contact with an individual in my local area who also has the 7000 and his does not have the issue I was experiencing. I can only assume that because all three camaras that i had came from the same store there is a possibility that they all came from the same manufacturing lot, however I am done investigating and just want a camera that works properly. I will be returning number 3 before the end of the week and i think i am going to wait a while and get another from a differnt store. I still believe that this is a great camera and i just hit with a few lemons. I am not giving up on the camera as i am still a Nikon fan.
I did open up a support ticket with Nikon and sent them sample video however at this point i have not gotten any responce from them besides they are examining the video.
Thanks to all on this forum who offered assistance on the issue.
Thanks for the post. While many of us do not shoot in near darkness, hot pixels or similar effect could be a show stopper for professional use. SLR video is increasingly used for professional video for a wide variety of reasons.
I agree with the idea of waiting a month or so and trying video from the next batch of cameras.
Ok Folks, here is my offical response from Nikon after they evaluated the sample video i sent them.
Hello Mr XXXXXX,
Thank you very much for contacting us, I'm sorry to hear you're having problems with your Nikon product. There seems to be a malfunction in the image sensor, we recommend checking your store's return policy or sending your camera for repairs under the terms of the warranty.
thanks for getting back to us with all the progress that you have made, and the reply from Nikon. Canon also had a bad batch of 7D's with a problem like this. this is not just an issue with sub 2,000 cameras, you should see the reports on 30,000 cameras with bad chip blocks. FYI studies have also shown that cameras that travel alot by air have greater risk of pixels going bad due to gamma rays traveling through the earth.. this is a true study, go figure. hop e number four is better. Let us know in a month or so.