Aquarium where giant fish swim
This is where you can see the migration of tuna at the Kasai Rinkai Aquarium in Tokyo.
Many giant tuna swim around in the 360-degree panoramic aquarium that surrounds the dimly lit hall.
A fantastic BGM is played in the air-conditioned building, and you can feel comfortable and feel as if you were a tuna yourself.
It's perfect for cooling in the hot summer months.
Even so, it's a big tuna compared to the size of the person in the lower left of the photo!
Imagine it from the photo, it's about 5 meters, but of course it's not that big.
The reason is that the fisheye lens exaggerates the perspective.
The distant objects are smaller and the near objects are larger.
When you hear the word fisheye lens, don't you think it's a special lens?
Not really, it's close to our eyes.
The human eye can see a range of approximately 180 degrees to the left and right with both eyes.
If you extend your hands straight to the left and right as evidence, you can see both hands slightly around the field of vision.
I don't feel any discomfort because it is corrected based on experience points such as the distance and size of what I see.
The curvature of the surrounding area is also corrected properly.
As a proof of that, please take a closer look at the above picture, and you will notice that the discomfort gradually disappears as you get closer.
The reason I feel uncomfortable is that what I see with the naked eye is projected on a small plane.
This photo has a 180 degree angle of view, but it doesn't feel unnatural!
Despite the photo above and the one taken with a fisheye lens, I don't feel any discomfort.
Perhaps it is because people are aware of things with the naked eye in such a situation.
Looking at the picture above, don't you feel that human eyes are also fish eyes?
In fact, how do fish see the world?
Perhaps you can see almost all around, except right behind your body.
It may be close to a photograph that shows the range projected by a 360-degree camera, which is popular these days, on a flat surface.
So, should we call the angle of view of a 360-degree camera a fisheye lens?
In fact, how do fish, birds and other animals perceive things with their eyes?
I don't really know,
Humans can recognize colorful colors thanks to the three types of photoreceptors, R (red), G (green), and B (blue), but birds are even more amazing.
Birds have another type of photoreceptor, and there are a total of four types of receptors, so it seems that even ultraviolet rays that are invisible to humans can be recognized.
The world beyond the scope that we can imagine is spreading in the bird's field of view.
Is it like a bird is recognized as a four-dimensional world by humans in the three-dimensional world?
Is it a little different?
It is certain that we are in a different visual world that we cannot imagine at all with the general perception of vision that we see.
Perhaps the camouflage color that we naturally assimilate and is hard to find is a warning color that birds can see well.
Does the fact that you can see ultraviolet rays mean that clothes that have been washed with detergent often look shiny?
Everything is a world that cannot be exceeded beyond the imagination.
The 15mm fisheye lens of Sigma used this time is the photo below, I will introduce it for a moment.
Sigma 15mm f2.8 fisheye lens alongside the cap
It's been a long time, but at the time of purchase, I was a little confused as to whether to use Nikon's genuine fish eyes or Sigma.
The deciding factor for purchasing Sigma was its shortest shooting distance!
The shortest shooting distance of Sigma is 15 cm, while the shortest shooting distance of Nikon genuine is 25 cm.
It's as close as 10 cm.
This difference is too big.
That's why I bought a new lens about 20 years ago. I think the price was about 20,000 yen cheaper.
This 10 cm difference is very large.
This shortest shooting distance of 15 cm is the distance from the film surface of the camera, not from the tip of the lens, and now the distance from the sensor.
From the tip of the lens, it is almost like sticking to the lens.
If you shoot with this lens at the shortest shooting distance, you can use it as a macro lens.
That's why it's quite interesting!
As for the image, I like it because it is very sharp from the open to the periphery, but the paint on the lens barrel has begun to peel off a little.
Well, it has nothing to do with the image, but I'm worried that the scales are disappearing.
The paint called Zen finish is easy to peel off
Distance scale, aperture value printing, and painting that is hard to peel off are desired.
It seems that this painting has been abolished from the new Sigma lens, so it seems to be okay.
The paint is peeled off from the old lens, but the coating on the lens is still beautiful and it is the same as when it was new. You can still use it.
I will continue to use this lens with an aperture ring.
Look at the base of this Sigma lens with the zen finish peeled off.
"Are? The base is more beautiful!"
The Sigma's first 120-300mm f2.8, which I'm using, gradually started to peel off with a matte zen finish.
The peeled part has a more beautiful surface.
I'm wondering if I should peel it all off, but it's also difficult to remove everything cleanly.
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Until the end Thank you for reading.
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