This page looks at whether shooting a much shorter exposure at ISO 400 can produce better/worse/comparable results to shooting a much longer exposure at ISO 64. Long exposure noise reduction was enabled for both.
Includes actual pixels crops and up to full resolution images.
These Quaking Aspen trees are the largest I have seen in the Eastern Sierra. Special soil conditions submerge the creek below the creekbed by mid-summer, making these aspen save from beavers.