Thank you very much Nicole
Quote:
Originally Posted by Octane
Greg,
Noting that you took 30 second exposures, you would have to have taken a few seconds to recompose the next image. If this was 8 panels, then, there's 4 minutes of exposure in total, and, a whole bunch of seconds for the recomposure for the next shot. Do you find that when stitching the panels that there's a bit of an error zone where the stars don't necessarily line up? Or, do you not worry about it, considering that it will only ever really be noticeable in print?
H
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Hi H,
I have found that it really isn't an issue. Yes there is 4+ minutes between the left of the image and the right of the image, but I am not stitching the left and the right together (if that makes sense). You are only joining one image to it's neighbors and the difference there is 30 seconds. Barely noticeable (if at all) even with the full res.
I also don't have much delay at all between shots. I pre-visualise the scene, level the tripod, compose and take the first shot (usually the left most one) and then as soon as the exposure has finished I move the pan head around abit to the right and press the remote trigger. I would say a maximum of 2 or 3 seconds between shots.
It can be an issue if you are doing a 360 degree pano and coming back to where you started from. Then you can have 10+ minutes difference in the stars positions. But even then you can do a few things to make it barely noticeable. You can start and finish your pano close to the south celestial pole where the star movement is minimal, or start and finish in a fairly featureless area of sky with no 'famous' stars or constellations. I certainly wouldn't try and start and finish a 360 right on the central bulge of the Milky Way for instance.
The most difficult stitch I have ever had was when I did one with a 50mm lens. It was from memory a 14 shot pano, but it was 2 rows of 7. That one took a lot of masking to make right.
Cheers
Greg