Timescapes - Digital Timelapse Discussion http://forum.timescapes.org/phpBB3/ |
|
Second Shooter Question http://forum.timescapes.org/phpBB3/viewtopic.php?f=42&t=13185 |
Page 1 of 1 |
Author: | Mabou2 [ Fri Mar 18, 2016 10:14 am ] |
Post subject: | Second Shooter Question |
Hi all, I have a new second shooter. I notice when doing a slide with pan, that the centerline fluctuates... moves to the left and right of center throughout the slide. I have already tried the lash compensation and it makes a difference for how well the overall slide keeps toward the center, but it doesn't help with the random right to left fluctuations. I am following Kesslers suggestion to mount a laser to the head and place a target 15' away, set the keyframes for 1 and 2, keeping the laser point in the center.... when I run the slide (20 seconds with 20% ramp), the laser point drifts as much as 2+ inches to each side of the centerline.... actually wiggles right and left quite a bit. Any thoughts? Matt |
Author: | scotchtape [ Mon Mar 21, 2016 1:12 pm ] |
Post subject: | Re: Second Shooter Question |
Wow this sounds horrible. Maybe you have a defective unit? I keep trying to search for reviews on this thing but find very very little on it online. http://support.kesslercrane.com/hc/comm ... nd-Shooter |
Author: | Mabou2 [ Tue Mar 22, 2016 6:33 am ] |
Post subject: | Re: Second Shooter Question |
UPDATE: Well then, I totally disassembled my CineSlider, re-set the belt tension, re-set the rollers, and now the Second Shooter seems to be tracking much more accurately. Of interest, I made a 3-minute video that shows my tests regarding the accuracy and repeatability of the Second Shooter. You might find this interesting... https://vimeo.com/159949340 |
Author: | scotchtape [ Tue Mar 22, 2016 12:24 pm ] |
Post subject: | Re: Second Shooter Question |
I assume in timelapse mode it is much more accurate? because this would be useless if it drifted that much in TL mode! |
Author: | Mabou2 [ Tue Mar 22, 2016 6:27 pm ] |
Post subject: | Re: Second Shooter Question |
Hi Scotch... I could be completely mistaken, but I really believe that the drift evident in my test is exceptionally low, kind of remarkable actually. You are looking at probably the equivalent of a 1000mm lens +/- in my test. Definitely a worst-case scenario for any slider, and from 14 feet away, it only drifts (on average) less than a half inch. For a point of reference, most of the time on a slider you will use a wide to medium wide lens. Try videotaping with a 1000 mm lens while you walk, then try videotaping with a 28mm lens while you walk. The 1000 would be totally unacceptable but the 28 would look very smooth in motion. Same thing here with the slider... I think. I also think it wouldn't matter if this was stop motion or continuous... but I could be wrong about that too... just brainstorming here. Anyway, onward and upward! Matt |
Author: | scotchtape [ Mon Jun 20, 2016 3:37 pm ] |
Post subject: | Re: Second Shooter Question |
Been testing my SS unit and it doesn't seem nearly as accurate as yours ![]() My latest test has been to mount just the pan/tilt to a tripod and set a diagonal move across a wall. If I start scrubbing, the start and end points shift about 1/2 to 3/4 an inch on either side, and the start point is always off as well. Eventually both points are off. I compared it to my eMotimo and the eMotimo is more accurate in terms of maintaining the start and end position. For a slider move, both drift in video mode at close range. At about 10ft away they are ok, but SS drifted a lot more than your unit, and start and end points also changed. My slider is the ifootage shark s1 that I made custom motor brackets for, which is why I tested just the pan/tilt locked down to isolate the problem. Seems like eMotimo is actually better at TL for consistency and framing, too bad it's too loud for video use. |
Page 1 of 1 | All times are UTC - 8 hours |
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |