Photography: Thank you very much for a few questions about fisheye lenses! !

The concept of fisheye is that when the perspective relationship changes extremely seriously, the nearby objects enlarge and the distant objects shrink.

This effect can only exist in a wide-angle lens (ignoring the following problems), because the photos taken by this effect look like a fish's perspective on the world, so it is called a fisheye lens. You can understand that fisheye is wide-angle.

12mm and 10mm are fisheye, provided that you have a complete fuselage.

Different cameras definitely need different lenses. If you like, you can also buy a conversion interface, but it is not necessary. If you use a Canon machine, continue to buy a Canon head ~

What's the use ... I don't know, the premise of buying this is that you love photography very much. Otherwise there is no need to spend so much money. Without a fisheye lens, there would be no fisheye effect, such as many interesting angles and exaggerated effects. But I think photography depends not on equipment, but on the brain behind the camera.

Usually expensive, five digits.