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476 seconds shutter. ISO 200. F16. this is my first post.Ive been looking at this pic for a while and i just noticed that if you soon in on the picture there’s little red and blue dots in the picture, i would like to know what they are if you could write a conment and tell me I would appreciate it.any tips on how to make this picture better.
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The red and blue dots are “noise” or what we used to call “grain” in the old days of film photography. In this case it’s probably due in part to the long exposure which creates a lot of heat on the sensor, resulting in digital “noise”. Did you have your camera set for automatic noise reduction on long exposures? It’s nice you were able to get out at night and “shoot the stars”! Star trails make great photography, but you could improve the picture a lot by including something of interest in the foreground.
- This reply was modified 54 years, 9 months ago by .
You said about what I would have said about the noise issue, @Dan-Cope! 🙂
I would also add that if I were you, @blake I would open up the aperture a bit; f/16 is way overkill for night skies. Since it’s so dark, you need to let in more light, I would say f/4 would be a better choice for night skies, or even lower, if you have the option!
Good point @buddingphotographer. BUT… if you were going to include some close foreground elements that would be bright enough with the long exposure that they needed to be in focus, I would think f/8 or so might be a good compromise. Depending, of course on your focal length and the distance of your foreground elements. Night photography is something I’d like to learn more about and experiment with. Btw, I saw your dad at Stoneboro Camp this summer. I used to enjoy listening to him and his family play the bells many years ago!
I guess it’s really up to you, whether you want a foreground sharp, or you want to see more stars! 🙂 I know from experience that to really be able to “see” the stars, you’ve got to open up the aperture, shutter speed, and ISO as high as you dare go, and there will probably still be some stars too faint to show up!
I was thinking in terms of a landscape shot where I would perhaps have a foreground subject just a few feet away that I wanted in focus. With what you’re saying, though, I would assume that the best star trail photos would be with foreground objects that were at a distance so that they could be in focus even at a wide aperture.
Hey @blake, the colorful specs are hot pixels that appear due to long exposures. Cambridge In Colour calls it “Fixed pattern noise” http://www.cambridgeincolour.com/tutorials/image-noise.htm
Do you have a program like Lightroom? Some programs are able to detect and remove this type of noise.
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