Quote:
Originally Posted by DavidTrap
Weird?????
Are you using an internal or external intervalometer? If it's internal, it may not be coping with the transition to long exposures.
I'd like to hear from the experts as to how they transition from day to night. Do they pick an arbitrary point in the evening (e.g. after astronomical twilight ends) when they shift to manual exposures of 20sec and maximum aperture, and the smooth out the transition using software?
DT
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I now have a HD version
here where you can actually see some stars.
I had the camera on auto with an external intervalometer and a delay of 10s. So it kept shooting short exposures within the delay segment of 10s. When it got dark I switched quickly to manual ISO 1600 and 10s exposures. Not sure why it slows down. Means the camera shot faster but it doesn't make sense because the gap is still 10s and the camera exposures were always contained within the 10s gap. I'm going to have to review the times on the raws and see what happened.
I had to key-in the brightness and contrast in the transition with software though (Premiere). You won't notice it as much in the sky but if you look at the illumination of the yellow bag on the top of the pier you'll see the break. You set 8 keys. Each for contrast and for brightness. 2 well before and after the transition so you can ease in and out and two at the frame level where the jump occurs. That's the second key you modify to try to match the previous frame which is a tad less saturated and much darker.