Quote:
Originally Posted by Somnium
Interesting, I used to do 30secs at 18 mm, looking at Sagittarius, so at 8mm I would have thought I could go a fair bit longer
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I agree Aidan.
I did my Milky Way widefield test on my new camera at 16mm at f/4.0 and was running 30 sec exposures easily.
See this thread:
MilkyWay Rising with the Canon 1DX
You should be able to bump that up I'd say to just under 60 sec on a full frame camera.
I used the 500 rule on my Full Frame camera.
The 500 Rule is:
500 Divided By the Focal Length of Your Lens = The Longest Exposure (in Seconds) Before Stars Start to “Trail”
This gives you a rough guide.
Note that this is for full frame cameras so you have to factor in the crop factor if you're using a crop sensor.
RB
