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Author Topic: First Impressions
StayFrosty
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Post First Impressions
on: February 23, 2014, 09:08
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I've now had a couple of weekends with the Chronos Lite, I though I'd post my first impressions:

Alongside Chris’s videos it took a little fiddling with the Chonotimer to start with but setting it up became intuative very quickly, within 3 or 4 test runs.

It took me a little while to “get” using it. On a tripod I’d previously just thought a shot every couple of seconds will do and I’ll leave it as long as I need, I can always speed it up later. With the Chronos, because the camera moves, a little pre planning is needed. You really need to know of how long you want your shot to be over the camera move and then work out your intervals,etc from there. E.g. 360 frames over the full 36 inch length results in a very fast camera move to my eyes and I can't see many circumstances where I would run it that fast. Also, any concerns that 36 inches of travel is too short were put to rest immediately, you need a lot of frames over that distance to make the final result look nice and smooth.I also tried some macro timelapse movement using my EF100mm macro and was really impressed with how small I could go to get smooth accurate movement. In fact I ruined a few shots by causing camera shake by walking across the floor.

I've no footage I want to show yet as I've mostly been shooting test footage to get to know the Chronos and the weather has been really bad so I've just been experimenting indoors up to now.

I've really got the timelapse bug bad now and the next step has to be some pan and tilt, I can see an Emotimo TB3 denting my bank balance very soon. Does anyone use these two together? Any tips or suggestions on getting them working together?

Chris@Chro-
nos
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Post Re: First Impressions
on: February 24, 2014, 16:03
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We have an eMotimo tb3 for testing putposes, they do work together. I found the eMotimo does not like the shutter signal from Chronos for some reason. I am not sure why, everything else in the planet reads Chronos's signal just fine. it is something with the way they read the pins. Chronos has the Shutter and Focus pins fused together. That could be why. If you have the cable pulled just slightly out from the eMotimo it will read the shutter, but not reliably.

I will set it up as follows

eMotimo Camera OUT to Chronocontroller IN. Via 2.5mm to 3.5mm cable.
Chronocontroller OUT to the Camera.

Setup eMotimo, and Chronos, and run Chronos in SGO mode.

works like a charm :)

As for the resolution, we used to use spider connected couplers on the HD rail which would give accutate movement down to 1/32,000th of an inch, when we moved to Lite we had to use different couplers that would fit, which were helical and would expand and contract a tiny bit knocking the resolution down to about 1/1000th of an inch. We are waiting on some new ones that we hope will increase the resolution back to the HD levels. once we test them out, if you want to swap let us know.

StayFrosty
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Posts: 5
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Post Re: First Impressions
on: February 24, 2014, 19:49
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I didn't realise these things could be that accurate, I doubt I'll ever need anywhere that level of precision but just as a matter of principle I'll crank out the MP-E 65 and have a little play right now!

Thanks for the info on the eMotimo, it's good to know they work together well. I am so tempted but I'll have to wait and see how my cash flow looks next month!

StayFrosty
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Posts: 5
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Post Re: First Impressions
on: February 25, 2014, 09:45
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there we go, 1 inch of movement with 780 shots, pretty near perfect, apart from the strange move at the beginning which I think was my ballhead settling!

Edit: any jitter you see is Vimeo playback, it is 100% smooth when loaded into RAM in After Effects.

Chris@Chro-
nos
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Posts: 137
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Post Re: First Impressions
on: February 25, 2014, 14:47
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That is pretty good! Even though these systems are capable of this level of resolution, it is still pretty tricky to pull off, any minor vibrations from walking around in the room can certainly screw it up.

Here is one i did testing repeatability over a couple inches.

and here is another, 450 frames over 1 inch with motion ramping. the smallest move was about 1/32,000th of an inch

StayFrosty
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Posts: 5
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Post Re: First Impressions
on: February 26, 2014, 13:22
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Very nice, I didn't try the ramping at such small moves, I might give it a go next. I don't think it's a bad idea to keep a small scale timelapse project on the go as it's not always possible to spend time out and about. I'll have to think of a macro project for the spare room.

Chris@Chro-
nos
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Posts: 137
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Post Re: First Impressions
on: February 26, 2014, 14:24
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that is just what i did with my Biolapse project :)

http://www.biolapse.com

StayFrosty
Newbie
Posts: 5
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Post Re: First Impressions
on: February 26, 2014, 18:00
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I've been following that too! very interesting stuff

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