Quote:
Originally Posted by Camelopardalis
We're all still learning mate 
Yeah the thing is that the Moon, planets and any faint fuzzies are all far, far away, so you're focussing on infinity. Some lenses have that marked at one extreme, but it doesn't necessarily mean it actually is in focus on night objects...only one of my lenses is actually in focus on when it says infinity 
But yeah basically once you've focussed, you shouldn't need to change it, unless you happen to knock it out (one of my lenses is very twitchy and this is easy to do!), or the temperature changes drastically or whatever. It's worthwhile checking your focus every once in a while just in case though.
70mm should give you some nice wide shots. The 300mm will also give you some nice close-ups of star fields, and combinations of objects, like the Lagoon and Trifid for example, would be nicely framed at that focal length. Lots of things to try |
yep we sure are - here is me teaching myself timelapse - as you can see the camera slowly went out of focus all by itself
https://www.flickr.com/photos/80336656@N07/14077367612/ wouldn't it be nice if it did it the other way
- for reference I think they were with a 50mm lens. and when I get to using it again I will be using tape or bluetac to keep it in focus!