Bricks in Motion
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When I animate recently my camera has been changing the brightness of each photo. Some are consistent but some might be randomly brighter or darker. I want to know what might cause this. Thanks!
Have you checked that all the automatic settings are on manual? (Exposure, Brightness, "Right light")
Are you using natural light, is there any stray light, (Open doors, windows, some other light in the room) or is there just the animation lamps? You want the only lights to be the lamps pointing at the set, nothing else.
Check on the two things above, and one or the other should solve your problem. 
And I'm assuming that you're using a webcam. If not, it may be a different issue.
I am using a Nikon Dslr camera. And yes I am only using animation lamps and the room is sealed from all other light.
I'm using the lens that came with the camera.
Also to stop light flicker, use a porable plug in outlet. It regulates the energy flow to the lights, which stops the almost violent flicker you might be experiencing.
I'm using the lens that came with the camera.
@Aquamorph its actually not the lens that came with it that is the issue.
@jakeAnimation I own an Nikon D90 DSLR and I've used the lens that came with it and figured out the two main factors with light flicker and that camera is A: You have to stand away from the camera when taking the picture, when I shot my brawl entry I was back behind my camera to cause little to no difference in objects around my camera so the lighting would be exactly the same, B: Wear all black all the time when shooting, I noticed when I wear even a blue shirt that I get light reflection from my clothing and even though its just a tiny tiny bit my camera seems to spaz out over it. If you have any more questions or free time to talk about this private message me and I'll do my best to help you out.
Before i say something, I have LITTLE experience with Nikon, but much with other DSLRs. In my experience, make sure you are shooting on the manual mode on your camera. Another thing is to always keep your lens on manual focus (MF). And of course in manual mode, never change exposure settings while shooting (shutter, aperture, ISO, etc), unless you are intending to apply a certain effect. Hope this helps!
If your flicker isn't too extreme you can check out the tutorial in my signature to learn how to reduce light flicker in post.
You might want to check out one of the many other topics created for this same issue. Like this one from last week which i replied to:
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