Nikon fisheye lens 8mm f3.5 ultra wide angle lens F3.5
Focal length: 8mm
Aperture: F3.5-F22
Field of view: 167°
Closest focusing distance: 0.3m
Optical structure: 10 elements in 7 groups
Adapted camera: Nikon
Hood: detachable
Only supports half-frame models
The focusing range of this fisheye head is from 30cm to ∞. Although the shortest focusing distance of 30cm is not excellent, in the actual shooting process, it is found that the distance of 30cm is still used relatively little; if the aperture is closed to F11, due to the depth of field, the actual clear imaging distance will be longer. A little closer.
Since this head has no autofocus function, it depends on the focus estimation! But don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t be afraid, it''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s very simple, you don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t need to be precise at all, just set it up roughly! Let me tell you a little experience: you can measure the length of your own arm. The total length of your arm is about 70cm. With this reference, you can fully ensure the focus is clear at close distances; medium and long distances only need to choose 1 or 3 meters, landscape, The building is directly on ∞. Because the 8mm lens handheld safety shutter is theoretically about 1/8 second, you can use the F11 aperture frequently to ensure that there is enough depth of field to eliminate your focus error. In fact, unlike ordinary lenses, this lens is too easy to shoot clearly, but it is very difficult to blur it out!
Note: Since the depth of field is that the clear range in the distance is greater than the clear range in the near, the estimation of the focus should follow the principle of not far away. For example, when you are not sure whether you should focus at 0.7 or 1 meter, you can choose 0.7 to ensure that the effect is not wrong!