Jump to content
Latest Issue of Aquarium World Magazine.

Deepsound

Members
 View Profile  See their activity

  • Posts

    378

  • Joined

  • Last visited

 Content Type 

Profiles

Forums

Events

Plant Articles

Fish Articles & Guides

Clubs

Gallery

Posts posted by Deepsound

  1. The What's Up? thread.

    in Fun

    Posted

    :wave:

    I find a lot of ladybugs species in my backyard this year : red, pink, yellow, orange with different patterns. One of the best aphids eater : around 150 a day for each ladybug. Better than pesticids ! I decided to keep my garden sprayfree 4 years ago. A couple of weeks ago, orontium aquaticum and zantedeschias were full of aphids. Almost turned black ! I just add 2 ladybugs on them and...

    :happy1:

    (see on the 2nd picture)

    Can we find ladybugs in NZ ?

    img_5946.jpg

    img_5954.jpg

    img_6046.jpg

  9. Photo : 'new' technology !

    in The Off Topic Fishroom

    Posted

    Hand-held plenoptic camera

    Have you been told about that technology ?

    Just terrific... :o

    That technology allows both the picture taker and the viewer to focus pictures AFTER they’re snapped, shift their perspective of the scene, and even switch seamlessly between 2D and 3D views. It is not another photoshop effect or something. Depth of field informations are recorded inside the image. You can choose how to focus your picture after shooting then re-focus it often as you want, on any area of the picture.

    This is achieved by inserting a microlens array between the sensor and main lens, creating a plenoptic camera.

    You can try it on-line here.

    - Vid 1

    - Vid 2

    - Vid 3

    Light-field technology was developed back in the 1990s, and initially required 100 cameras attached to a supercomputer... This company wants to make an affordable hand-held plenoptic camera !

    Theory

    "Conventional cameras do not record most of the information about the light distribution entering from the world. The goal of the camera presented in this paper is to re-capture this lost information: to measure not just a 2D photograph of the total amount of light at each point on the photosensor, but rather the full 4D light field measuring the amount of light traveling along each ray that intersects the sensor. One can also think of this as capturing the directional lighting distribution arriving at each location on the sensor".

    - Paper from Stanford University)

  15. Ancient peat swamp forest

    in Freshwater

    Posted

    @ Phoenix, Anthony law and Joe : thanks ! :D

    @ Joe : when I saw them in the shop, I bought them all !!! They are rare here too. May be because their habitat is under threat :(

    @ Sophia : No breeding yet. I think I should keep them with no other species to hope so. They are very sensitive fish which don't like water parameters changing. When they feel good, that iridescent blue is magnificent. The anal fin of males has a black mark.

    It seems they like to swim so I put them in a 100 cm tank rather than in a nano. But a 50 /60 cm could suit too. A carpet of leaves (oak, catappa) covers entirely the soil in order to add tanins, decrease the Ph and let the micro plankton proliferate. I also use peat for its humic matter and trace elements and its action on Ph / hardness. I love black waters :)

  21. Ancient peat swamp forest

    in Freshwater

    Posted

    Thanks :)

    Yes, it's pistia. They help to purify the water (especially for summer camp ;) ) and their roots get a nice home for microfauna. I use to put pistias in the pond, to catch a lot of micro plankton. And then, put them back in the tanks.

    img_9337.jpg

    img_9340.jpg

    img_9347.jpg

×
×
  • Create New...