Longest sub exposure for DSLR
Hi all,
With my Nikon D7000, I have gone from 30” subs to 2’ to 3’ with results getting considerably better the longer the individual subs. Tonight I plan to go 5’. Too long for a DSLR?? What is the maximum exposure for a sub before running into problems? (Is the main problem bloating of stars?)
Also, should I be decreasing the ISO if I increase sub length?
Thanks for all you help,
Stéphane
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