Ciliates of Cohnilembus genus

carlos.uruguay · Post by **carlos.uruguay** » Thu Feb 18, 2016 7:42 am

We have already filmed before ciliates of Cohnilembus genus.
We have found those of this video in very putrid marine water without oxygen
They measure about 85um (0.085 mm) long.
Resembling bottles with two candles (undulating membranes) at its anterior end, a long cilium long on his rear end.
Many vacuoles in their body
We observe how the biggest undulating membrane has a sinusoidally movement.
Dark Field, phase contrast and polarized light oblique
Objectives 20X, 40X and 100X
Camera panasonic GH4
Music: guitarist Victor Gomez
Video link:
https://www.youtube.com/watch?v=nzfawDSLr_s
Video frames preview:

Regards
carlos

Jacek · Post by **Jacek** » Thu Feb 18, 2016 8:27 am

Super !

zzffnn · Post by **zzffnn** » Thu Feb 18, 2016 8:48 am

Always enjoy your videos! Thank you Carlos!

Bruce Taylor · Post by **Bruce Taylor** » Thu Feb 18, 2016 11:04 am

Exceptional, Carlos!

billporter1456 · Post by **billporter1456** » Thu Feb 18, 2016 12:15 pm

Beautifully done video, Carlos! Thanks for showing me an organism I could never see in the samples from my local pond.

Cactusdave · Post by **Cactusdave** » Thu Feb 18, 2016 12:50 pm

Super. Your X100 oil phase contrast pictures are absolutely exceptional. Do you use auto or manual video settings on the GH4? If its manual, what ISO/shutter speed are you setting?

carlos.uruguay · Post by **carlos.uruguay** » Thu Feb 18, 2016 1:33 pm

Thank you all for your kind comments

Cactusdave wrote:Do you use auto or manual video settings on the GH4? If its manual, what ISO/shutter speed are you setting?

Thanks Dave.
I use GH4 without intermediate lens, all manual.
White balance according to the whitest area of the slide in adjusted to each objective and lighting
ISO 400 in oil objective
ISO 200 in the others
Shutter speed 120 in all the video

Protos · Post by **Protos** » Fri Feb 19, 2016 2:23 am

I appreciate a lot this video Carlos !
Never seen before in my experience.
Your filming style is also very much appreciated
What do you mean by shutter speed in videos ?

carlos.uruguay · Post by **carlos.uruguay** » Fri Feb 19, 2016 8:50 am

Protos wrote:I appreciate a lot this video Carlos !
What do you mean by shutter speed in videos ?

Thanks Phil for your kind words!
when the subject is moving very quickly, I have observed that with a faster shutter speed the movement can be seen more clearly.
I recorded to you an example video:
https://www.youtube.com/watch?v=R3AVsh5NNdQ
Regards
carlos

Sumguy01 · Post by **Sumguy01** » Fri Feb 19, 2016 9:00 pm

Thanks for sharing another nice vid.

RogelioMoreno · Post by **RogelioMoreno** » Sat Feb 20, 2016 6:05 am

Carlos,

Amazing video!

Rogelio

Charles Krebs · Post by **Charles Krebs** » Sat Feb 20, 2016 10:57 am

Really nice! I especially liked the high mag PC that runs from about 1:16 to 1:25!

fpelectronica · Post by **fpelectronica** » Sat Feb 20, 2016 11:20 am

Very very nice!

carlos.uruguay · Post by **carlos.uruguay** » Sat Feb 20, 2016 1:16 pm

Thank you very much to all!

tsavorite · Post by **tsavorite** » Sat Feb 20, 2016 8:38 pm

Very interesting video.