Gordon Laing wrote:
Hi mbrutus, the longer the focal length, the quicker the stars will trail and the more careful you'll need to be with the focusing... so at 55mm, working at an equivalent of 83mm, they'll trail after only a few seconds - but then this can also create a nice effect...
In the absence of a lens focus distance scale or Live View with magnification, your best bet is to focus on a distant streetlight (and I mean as far away as possible). When it's in focus, put your lens to manual focus, recompose and take the shot. Check the focus afterwards by zooming-in during playback, and make focus adjustments if necessary. It can be quite a tough process, wich is why Live View is so useful - although you will need bright stars for it to work.
Thanks for the tip... I could not try it tonight for it was cloudy!!! >_< Florida is so unpredictable... At 3:00 pm it was clear and by 4:30 pm it was raining like there was no tomorrow!!! Uggh! Well, there is always the weekend when I have time!!! I might not be able to do this because I live close to a lot of lights... So I don't thing I will be able to get some bright stars. But it's worth a try!