I was shooting at f4.5 shutter speed 30s for capturing stars in my photo but was not able to manual focus as we can't set the manual focus for stars.

I am using a 18-55mm Nikkor lens, what I get after the image is captured is a bad focus image.

Question: If i am not able to see the stars in the viewfinder then how can i set manual focus


pre focus on a distant city light, or the Moon if out.


Stars are at an infinite distance.

Failing to find a brighter similarily distant object (like a far tower with a light on it, or the Moon for instance), you can set your lens to infinity and hope that it works. In reality you likely will have to use a setting slightly less than the absolut maximum focus distance (how exact depends on your lens / camera combination and is subject to experience with your own equipment).

  • Calibrated hard infinity stops are rare on modern lenses. And it is better that way - drift in the wrong direction can make such a lens fail to focus at infinity at all. "Soft" stops also cannot be relied on until you really calibrated them, and did so taking temperature drift into account. Nov 12 '20 at 21:15
  • While that is true, the room for error gets larger the shorter the focal length. I hardly fail to manually adjust my fish eye to infinity without looking through. And with digital you can even take an image, review it, and re-adjust focus if needed Nov 12 '20 at 21:56

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