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Euglena

 
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hkv



Joined: 02 Jan 2013
Posts: 392
Location: Sweden

PostPosted: Fri Aug 04, 2017 3:01 pm    Post subject: Euglena Reply with quote

I found a couple of what I believe to be Euglena in a recent water sample. I am really fascinated by these "shape shifters". Amazing life forms. And colorful. They moved around quite a lot and were very difficult to capture and impossible to stack. I adopted the "spray and prey" method and took a couple of hundred single images. Then I selected these which were the only few I managed to get in decent focus. No stacking, just single images. To freeze the flagella I used an exposure time between 1/2000 and 1/2500. Hence, ISO is quite high, but noise was not too bad. The DIC background was very homogenous between images so I decided to put 4 Euglena on each image and these were selected such that their final location on the image you see was close to their location in the original image. Hence, they melted into background in a natural way without too much adjustment.






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Jacek



Joined: 02 Oct 2011
Posts: 4686
Location: Poland

PostPosted: Fri Aug 04, 2017 11:33 pm    Post subject: Reply with quote

Super !
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sushidelic



Joined: 10 Jun 2016
Posts: 135

PostPosted: Sat Aug 05, 2017 3:00 am    Post subject: Reply with quote

Really good images and certainly a painful but right approach to capture them. I found some Euglenae in a recent pond samples but gave up on taking pictures of them for the reasons you mentioned...

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Michael
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Sumguy01



Joined: 28 Jan 2013
Posts: 876
Location: Ketchikan Alaska USA

PostPosted: Sun Aug 06, 2017 9:38 am    Post subject: Reply with quote

Very nice.
Thanks for sharing.
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Johann



Joined: 02 Aug 2016
Posts: 77
Location: South Africa

PostPosted: Sun Aug 06, 2017 10:57 pm    Post subject: Reply with quote

Great job - the last image is awesome!
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carlos.uruguay



Joined: 23 Feb 2012
Posts: 4727
Location: Uruguay - Montevideo - America del Sur

PostPosted: Mon Aug 07, 2017 6:41 am    Post subject: Reply with quote

Nice!
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hkv



Joined: 02 Jan 2013
Posts: 392
Location: Sweden

PostPosted: Wed Aug 09, 2017 12:56 am    Post subject: Reply with quote

Thanks all!
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Marek Mis



Joined: 10 Jul 2010
Posts: 2442
Location: Suwalki, Poland

PostPosted: Wed Aug 09, 2017 5:45 am    Post subject: Reply with quote

Very nice images !

Marek
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