|
Firstly, no good taking any notice of infinity setting on lens, as almost all
lenses can focus beyond it, so Live View is the way to go. To double check your focus after taking your first shot have a look at the result on the LCD screen when you magnify it.
Secondly, noise reduction. Turn camera to manual mode so all sections of the menu are available. In my 1100D it is in the last section. There is long exposure noise reduction, and high ISO noise reduction. Experiment with both
enabled, or either one on it's own. I generally get the best results with both enabled.
Thirdly, the B that Lewis mentioned stands for bulb. With the camera on manual turn the shutter speed wheel through longer and longer exposures until you reach 30secs, and the next click will then be B. In the B setting the shutter will stay open all the time the shutter button is held down.
You will need a shutter release cable, if you don't have one, in order to
avoid vibrations when touching the camera.[get one on ebay for a few dollars].
Fourthly, When doing fairly basic work, you don't need to worry about
dark frames; with noise reduction enabled the camera takes one after
every shot, and it also does some bias work. Some people over process
their shots, for instance, using bias frames when they don't need to.
And yes, you obviously have bad light pollution, so will have to take
more shorter exposures and stack them.
raymo
|