dchew
Well-known member
I agree Ken.
Here is the test I'm in the process of running:
1. Shoot a dark-ish room @ f/5.6, 30 sec, std mode normal latency. Change to Aerial mode, zero latency
2. Take another shot @ f/32, 16 min.
3. Take another shot @ f/32, 16 min.
The first image is just for reference. Hopefully my 5-stop math is correct...
Based on Doug's comment regarding forcing the back to use the dark frame from the first exposure, it makes a lot of sense to shoot that first frame at an exposure close to what the subsequent shots would be. Even if your exposure was going to be 1 hr, it would be prudent to take a generic dark frame first at that exposure time while you were setting up or driving to the site or whatever.
Doing it this way eliminates any cast from ND filters, etc. Sure the second and third images will be soft because of f/32, but we don't care about that for this test.
Dave
Here is the test I'm in the process of running:
1. Shoot a dark-ish room @ f/5.6, 30 sec, std mode normal latency. Change to Aerial mode, zero latency
2. Take another shot @ f/32, 16 min.
3. Take another shot @ f/32, 16 min.
The first image is just for reference. Hopefully my 5-stop math is correct...
Based on Doug's comment regarding forcing the back to use the dark frame from the first exposure, it makes a lot of sense to shoot that first frame at an exposure close to what the subsequent shots would be. Even if your exposure was going to be 1 hr, it would be prudent to take a generic dark frame first at that exposure time while you were setting up or driving to the site or whatever.
Doing it this way eliminates any cast from ND filters, etc. Sure the second and third images will be soft because of f/32, but we don't care about that for this test.
Dave