armitage2112 t1_j22x6m1 wrote on December 29, 2022 at 6:50 AM

Reply to comment by drheckles in Winter sunrise Mount Hood, Oregon (USA). [5000x3333][OC] by drheckles

two different moments for the sky Ryan?

armitage2112 t1_iypa3jb wrote on December 3, 2022 at 2:25 AM

Reply to comment by StupidizeMe in Iceland Glacier Lagoon OC [4149x2334] by SliverThumbOuch

volcanic ash. If you imagine back when it was freezing there would still be debri flying around and getting stuck within the ice.

armitage2112 t1_iuiux2o wrote on October 31, 2022 at 5:40 PM

Reply to The fall color in Vermont was amazing. So vibrant and so many different colors. [OC][2048x1365] @mattymeis by mattymeis

IS THAT THEE MATTY MEIS

armitage2112 t1_iu33v6j wrote on October 28, 2022 at 4:58 AM

Reply to comment by mrtnjv in Cygnus region of the Milky Way setting over the Blue Ridge Mountains in Virginia [3376 x 4672] (OC) by MrJackDog

Ill answer for them. They are using a startracker, meaning the camera rotates at the same rotation of the earth meaning they won't ever get star streaks.

Without a startracker, the wider your lens, the longer you can take a photo for. You can divide 500 by your focal length (lets say 20) and you'll get how long you can shoot in seconds for that focal length, so 500/20 = 25seconds is the longest before you get streaks using a 20mm lens. In practice this is a bit too much in my experience but, it's close enough for napkin math.