Welcome to NikonForums.com
Register now to gain access to all of our features. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. If you already have an account, login here - otherwise create an account for free today!
Register now to gain access to all of our features. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. If you already have an account, login here - otherwise create an account for free today!
I don't believe this is noise, so what is it and how do I get rid of it?
Started by JWP763, May 11 2016 10:15 PM
long exposure time lapse night stars
#1
Posted 11 May 2016 - 10:15 PM
So, I'm trying to teach myself time lapse long expose shots so I could really capture the movements of the stars. I haven't done much reading up on it mostly because I could find any good info so I just winged it and I think my first try was pretty successful. For the photo I used a D7100 with an 18-55 wide angle Nikkor lens. I had about a 45 minute exposure time with f/22 and anISO of 100. I'm happy I was able to capture the stars movement but if you zoom in on the attached image, it's covered in a mixture of grey, red, green, and blue dots. I don't believe this is noise and I tried noise reduction using Lightroom buy it didn't do much. Any idea what it is and where I'm going wrong??
#2
Posted 14 May 2016 - 11:45 PM
That's definitely noise, most likely caused by sensor heat. What you'll want to do is enable slow shutter speed noise reduction (dark frame subtraction) in the camera. This will start running as soon as your exposure finishes, for the duration of the original exposure (45 minutes in this case).
For an exposure that long I don't see a viable alternative to DFS, though attempting to reduce color noise during raw development may help.
#4
Posted 16 May 2016 - 12:38 PM
Most star trail images you see are actually many separate exposures, usually about 30 sec each, stacked on each other using software.
This. There is a lot of good info on the subject, I read a lot about it several years ago. Stacking is the way to do it.
#5
Posted 17 May 2016 - 01:05 AM
#6
Posted 22 May 2016 - 12:22 PM
Thanks guys, I'll give it a try next time, I thought the image uploaded but I guess not
Also tagged with one or more of these keywords: long exposure, time lapse, night, stars
Photography →
Photographic Technique →
Variable zoom, long exposure. Nikon D3500 with kit lensStarted by abs1962, 04 Feb 2024 variable zoom, long exposure and 1 more... |
|
|||
Camera and Photo Help →
Beginner Questions →
D3300 Blurry ImagesStarted by calvinyt6, 15 Jan 2024 blurry images, d3300 and 1 more... |
|
|||
Camera and Photo Help →
Beginner Questions →
Manual focusing at nightStarted by BennyIOW, 17 Jul 2023 astro photography, night and 1 more... |
|
|||
Photo Sharing →
Post Your Photos →
Nature and Animals →
One Awesome "Queen of the Night" Tulip.Started by Tony, 26 Jun 2023 queen, night, tulip |
|
|||
Photo Sharing →
Post Your Photos →
Macro →
Time-lapse mushroom filmStarted by timwijgerde, 27 Nov 2022 time lapse, mushroom, macro |
|