Loooooong exposures (at night)

[Jim Graves]

For long exposures, one other issue is the type of surface your tripod is on ... When Weston did his tour around California he found many of his beach shots surprisingly blurry when developed ... he finally concluded that the tripod legs were very slowly sinking in the sand.

[StoneNYC]

If you have an iPhone...

https://itunes.apple.com/us/app/reci...459691262?mt=8

Best most useful app ever! (Except the massive dev chart app perhaps) I use this all the time (like today).

Reciprocity Timer app

And a new version is coming soon with a TON more films...

[Drew Wiley]

What kind of app' is that, Granny Smith or Red Delicious, maybe? Shot is over by the time you finish chompin' it? Anyway, beach sand is tricky if you're within wave
reach ... a bit of quicksand effect as the sand grains reconsolidate. I lost a shot last month that way. Fresh snow is another culprit.

[Vaughn]

For long exposures, one other issue is the type of surface your tripod is on ... When Weston did his tour around California he found many of his beach shots surprisingly blurry when developed ... he finally concluded that the tripod legs were very slowly sinking in the sand.

Same with his images in the Redwoods...