New answers tagged shutter
While you can use the Bulb mode and press the shutter release button, the button presses are likely to cause unwanted camera shake, even on the sturdiest tripod. I use and recommend an intervalometer such as this: http://www.newegg.com/Product/Product.aspx?Item=9SIA04D09G0109 Notice that the shutter release time can be set for any time up to 99 hours, 59 ...
Long exposures are one area where electronic sensors can't do what film did. Electronic sensors accumulate noise over time, in addition to any signals due to light hitting the sensor. This is why the designers of such cameras limit the maximum exposure time so something around 30 seconds. If you could hold the shutter open, and have the sensor therefore ...
Put it in Manual (M) mode and roll the wheel until it shows 'Bulb' on the display. Press and hold the shutter button for the desired length of time. You don't need a remote, but it helps to prevent camera shake to a great extent. P.S. The manual is your friend.
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