D90 shutter speed

Discussion in 'Photography Beginners' Forum' started by tresguey, Apr 18, 2009.

  1. tresguey

    tresguey TPF Noob!

    Joined:
    Aug 31, 2008
    Messages:
    47
    Likes Received:
    0
    Location:
    SoCal
    Can others edit my Photos:
    Photos OK to edit
    Tonight I have been taking pictures of the stars. I want long trails and my shutter speed only goes out to 30 seconds. Anyone know how to make this longer?
     
  2. prodigy2k7

    prodigy2k7 No longer a newbie, moving up!

    Joined:
    Apr 22, 2008
    Messages:
    1,665
    Likes Received:
    22
    Location:
    California, USA
    Can others edit my Photos:
    Photos OK to edit
    Do you have a bulb move somewhere, like after 30 seconds does it says bulb? I have a different camera but im assuming your camera has it ;x

    If you are in bulb, the shutter will stay open as long as you hold the shutter button. (better to be used with a remote)
     
  3. DavidElliot

    DavidElliot TPF Noob!

    Joined:
    Dec 19, 2008
    Messages:
    169
    Likes Received:
    0
    Location:
    East Lansing, MI
    Can others edit my Photos:
    Photos OK to edit
  4. tresguey

    tresguey TPF Noob!

    Joined:
    Aug 31, 2008
    Messages:
    47
    Likes Received:
    0
    Location:
    SoCal
    Can others edit my Photos:
    Photos OK to edit
    Thanks for reminding me of the bulb setting. I read my manual but that part slipped my mind. And I am new to this photography thing.

    That stacked link is pretty cool
     
  5. Katier

    Katier TPF Noob!

    Joined:
    Jan 14, 2009
    Messages:
    452
    Likes Received:
    0
    Be carefull going for overly long exposures. Digital sensors heat up as they record the image and long exposures can get very noisy. The idea of combining trails is a good one and reduces the chance of noise.
     
  6. Dwig

    Dwig TPF Noob!

    Joined:
    Mar 11, 2009
    Messages:
    1,261
    Likes Received:
    0
    Location:
    Key West FL
    Can others edit my Photos:
    Photos NOT OK to edit
    Even if you use Bulb to get longer than 30sec exposures, stacking is a good trick. By reducing the individual exposure times you somewhat reduce the noise in each indificual image. A bigger improvement comes from the fact that the noise pattern, being random, doesn't match image to image, and is thus suppressed in the assembly while the real image data, being aligned, is reinforced.

    BTW, the Earth spins at 15 degrees per hour. To get a star trail with a small 5 degree arc you will need a 20 minute exposure (or 20 stacked 1 minute exposures). Longer arcs require longer expousres. Plan you total exposure time accordingly.
     

Share This Page

Search tags for this page
d90 how to change shutter speed
,
d90 long shutter speed
,
d90 set shutter speed
,

d90 shutter speed

,
how to adjust shutter speed d90
,
how to change shutter speed on d90
,
how to set 1 minute shutter speed d90
,
longest shutter speed for d90
,

shutter speed d90

,
shutter speed on d90