Have you ever shot digital in bulb or exposed for more than couple of minutes? I guess not. In DSLR when you shoot for long exposure lets say for 5 mins the camera will take another shot of black for 5 mins. It does this to reduce the noise in the picture that is caused due to the heat generated by the sensor. So in a 2 hours exposure your camera is occupied for 4 hrs. A normal DSLR battery can last for at the most 2-3 hours of continues exposure. Although, you can squeeze more time by using vertical grip.
Another point to note is, usually star trails are shot outside the city limits due to light pollution in the sky. Due you see any stars in the city skies? You will be lacking electricity in remote areas. Therefore, film is the best option for long exposure. For this I have Nikon FM2 which is a mechanical camera that works without battery.
Henry




[/IMG]
)


. Just started with composition and big thanks to you for your wonderful post:

Leave a comment: