Smoke Jellyfish by David Leng
The apparatus used to create the vapor for the jellyfish was produced by vaporizing vegetable glycerine on a kanthal coil. The “jellyfish” is produced by inhaling the vapor, coughing out the letter “O” to create a vortex ring, then slowly exhaling vapor in the center allowing it to curl around the vortex ring.
More information: DavidLengSep28,20161123AMDavidLengGetWetReport
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The jellyfish effect is an amazing visualization of the vortex ring. The photo might benefit from a little more contrast between black and white to make the smoke “pop”.
I like the contrast between the black background and the white smoke but it may have looked a little bit better if the background wasn’t a bit crumpled (perhaps play around with the contrast). Other than that, the jellyfish-like flow is quite intriguing.
How do your create this? Is it a ring viewed from the side? Setting the background black value would help focus on the smoke
I love the cloud; it really feels as though it’s about to swim away. I think the background could be darker, or at least have a higher contrast added to make sure the vapor really stands out. Focus is nice.
My favorite of the smoke photos. It is amazing how the picture was captured and how clear the photo is. I would recommend trying to see if there is a way to increase the contrast without losing some of the information within the flow. Great work!
Great visualization of the fluid flow! The ring is visible as well as some of the smoke surrounding the core of the vortex giving a more complete view of the phenomenon. Perhaps more contrast with the background with different lighting would enhance the image.
Nice contrast between white smoke and background, however you might want to smooth out the background before the photo as the crinkles can distract away from the awesome jellyfish. Interesting flow instability.
The image is a very interesting fluid flow, I had no idea you could do this with smoke. I would try and play with the contrasts a bit to get rid of the background and pop the colors of the smoke.
This image is so well done, everything looks clear, and the use of the area in your frame is effective. This image clearly displays the flow as well as details of the flow: you can see a lot of the different parts of the jellyfish. Perhaps increase contrast in the background
Good timing in capturing this side view of a circular vortex ring. I actually find the mixing in the tail particularly interesting. I wonder if the direction of your lighting were adjusted if the background could be made less prominent in the photo. It looks like a brighter light source may have also helped freeze the motion of the ring. This type of photography is particularly challenging because getting enough light is hard.
This smoke jellyfish is so cool. As a non-engineer, the physical formation of this just blows my mind.I love seeing the smoke interaction, how it’s swirling amongst itself and all around. Picture is a bit fuzzy but capturing an image like this is really hard. Only thing that I can imagine would make it better would be some colors.
Art: The image itself is beautiful and aesthetically pleasing. It clearly captures the shape of the “jellyfish” and I feel that it was isolated enough that there was nothing to distract from it.
Flow: The details are astounding on this image and is clearly illustrated. I’m not too sure about the physics behind it but I understand that this is a high level of fluid flow that is being demonstrated.
Photographic technique: Like Professor Hertzberg said, I believe the contrast could’ve been increased to get rid of the wrinkles present in the backdrop. Additionally, a lower ISO and a slower shutter speed might’ve made the image even sharper. Great technique still!
I enjoy the fluid flow that is highlighted in the image, but you can get more details in the pixels by decreasing the exposure. It is very creative, and the flow is somewhat understandable. The image could use just a minor bit of enhancing.
The “Jellyfish” is beautiful as it is a unique fluid flow. Azimuthal instability describes the flow perfectly. The contrast between the center of the ring and the “tail” can be seen clearly.
Very cool smoke shape, interesting method to create the smoke jellyfish and looks good against the black background.
The smoke trail is beautiful. Try to get more contrast so that the smoke stands out more. Flow can easily be seen. More focus on the jellyfish feature would help it stand out more.
The image is interesting and pleasing. The flow is very creative. The photographic technique is good, however, given the intriguing title and nature of the image, you may want to consider rotating the image to mimic the typical jelly fish photographs with the head at the top.
1. Love the Jelly fish shape
2. I think contrast could be improved
3. I think the background is distracting
Artistically, it is awesome that you caught the vortex ring where it looks just like a jellyfish from the side! The flow is absolutely visible and the image is surprisingly crisp for capturing smoke. My only suggestion would come in the editing phase. I might try heightening the contrast to make the background less disruptive to the flow.
The flow from the image highlighted very nicely with the trail following the jellyfish. I think this photo could benefit from more contrast and a cleaner background to help the smoke stand out.
Art: I really enjoy how you made the fluid flow animalistic.
Flow: The azimuthal instability is unbelievable. Great work at catching it at perfect timing.
Photographic technique: Possibly add more contrast.
Very cool image, it is amazing that it actually looks like a jellyfish! The contrast could be improved slightly, getting rid of noise. The focus of the picture is great.
A. Great job with the background making sure there is no distracting elements
B. This clearly illustrates a very interesting and difficult flow
C. Good focus on this image
I appreciate your ability to succeed in a difficult focusing situation. Maybe increase your contrast, seems like your images is very gray. I am excited that you were able to capture this phenomena so clearly.
Great focus on the ring, but the couch in the background is slightly distracting. Turning the image 90 degrees may increase the intent of displaying a jellyfish.
– Fog and light applications are great!
– Has an artistic point of view with the smoke vortex.
– Would iron the black drop cloth to have a more flat background.
Similar comments as Jeremiah’s picture. There is a little bit of noise in the photo which could be attributed to the high iso of 6000. A way this could be accomplished would be dropping the iso and decreasing the shutter speed. This will let more natural light in so you can still see the ring but have less noise. I like the framing and it looks like it is in greyscale which I like. The focus might be off a bit as well but that could be attributed to the high ISO. Awesome picture.
Art: The color contrast between the smoke and the background is very dramatic, but it could be a little more abrupt between the white and black.
Flow: The flow is understandable and easily recognized.
Photographic technique: The background of a sheet or posterboard is slightly distracting, but that could be easily remedied with Photoshop or another photograph altering software.
Very interesting flow, apparently an “azimuthal instability”. The resemblance to a jellyfish gives the photo some artistic quality. As with other smoke images, the contrast is lacking and there is no “pure whites”, and the background is quite distracting.
The image offers an interesting contrast between the “body” of the jellyfish and the ring on the interior. I think it may offer a more clear visual of the effect if you were to edit out the background texture and matching colors.