Star Trails – focussing?
It looks like we have relatively cloud free skies tonight, so I am planning to go out tonight and try some Star trail trials. At this point I am planning on using my Bronny SQ-Ai and 80mm PS lens loaded with Ektar. The plan is to shoot at either F5.6 or F8 for around 1 to 2 hours. (I want to try for at least 2 hours, but it all depends on what others want to do, as I am just tagging along).
The main thing that is puzzling me a little is where I should be focussing with such a setup – Should I set on infinity and hope for the best, or set it back a bit?
Any advice would be welcome!