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Thanks for that Chris.
The Olympus is ahead of the Canikon crowd then. 30 second limit is unnecessarily limiting. Also I like the idea of the Pentax in built tracking ability. It'd be great if the 60Da had all these features built in. A dream I suppose.
I tried the Trigger Trap last night for bramping.
I think it will be not workable for astro time lapse. It appears to be designed only to do sunsets and sunrises.
Basically the slowest shutter speed it will take is 1/15th of a second. To get a twilight image properly exposed at 1/15th of a second with F2.8 and ISO6400 probably requires 1/8000th sec. 1/15th sec to be properly exposed would be ISO100 and probably F8.
Also diffraction effects (that start to result in image blurring) on the D800 start at about F8 (not that important with a time lapse which is low rez anyway).
I use 30 seconds at F2.8 and ISO6400 on my D800E for time lapse at night. 1/15th of a second in twilight is a totally white image at F2.8 and ISO6400.
I found the internal camera functions of the D800E worked better and easily. I set it to auto ISO, max 6400, min 100, min shutter speed 4 seconds (again Nikon why not 30 seconds???) and aperture priority mode at F2.8.
That worked with some mild flicker but once it gets dark its too dark. So I simply stop it at that point and kick in a new time lapse for the night session 30 seconds ISO6400, Manual mode, no auto ISO and let it rip.
Then do a cross fade between the 2 movies. Its not perfect or seamless but its something.
The Triggertrap did the sunset ok, but then I have to stitch it together as a movie (I am still learning and my attempts to do that failed so far).
Once it was dark images were simply almost black.
I think it also does the ramping over the whole period rather than the ramping until dark and then continue at a night setting for several hours.
So its a start but needs more features to be useful for astro time lapse.
Greg.
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