JPH0453626Y2 - - Google Patents

Description

[Detailed description of the invention] a. Reference field This invention relates to a distance gauge for close-up photography.

b. Prior Art and its Problems As a conventional distance gauge for close-up photography, there is one shown in FIG. 4, for example.

In FIG. 4, reference numeral 1 denotes a rod constituting a distance gauge for close-up photography, and a frame 1a is provided at its tip to indicate the photographing range, and its base is fixed to the front surface of the camera 2. Its function is
When using a compact camera other than a single-lens reflex camera, such as a compact camera, it is possible to determine the position of the subject by looking directly at it, without looking through the viewfinder, when taking close-up shots with a close-up lens attached. Because the distance between the indicated tip and the lens position must always be constant, the rod 1
The length of is immutable.

By the way, with such conventional distance gauges for close-up photography, it has become necessary to move around with the gauge attached to the camera from the preparatory stage, which is not only inconvenient to carry, but also hinders movement, especially when shooting underwater. Also, when shooting underwater, the medium between the camera and the subject is water, so the focus position is different from when shooting on land.
If the length of the distance gauge was constant, it could not be used for both underwater and land photography.

c Purpose This invention was made in view of these conventional problems, and can be expanded and contracted to multiple stages, and the sum of the lengths corresponds to a preset focusing position according to the number of extended stages. and a rod storage part which is rotatably provided on the camera body and stores the rod, the rod storage part is formed to be grippable and can be fixed at any rotation angle. It is characterized by being held in

d. Structure of Embodiment Hereinafter, an embodiment of this invention will be described with reference to FIGS. 1 to 3 of the drawings.

FIG. 1 is a perspective view showing an embodiment of this invention.

First, to explain the structure, numeral 3 is a multi-stage cylindrical rod that is expandable and retractable in the axial direction, and its tip 3a
is the part indicating the subject focus position. For example, when the rod 3 is extended to the maximum extent and the rod storage section 4, which will be described later, is raised 90 degrees toward the camera 2,
The maximum extension of the rod 3 is determined so that the tip 3a indicates the in-focus position of a subject in close-up photography underwater. Furthermore, by stretching only a specific number of stages of each stage of the rod 3, it is possible to indicate the in-focus position of a subject in close-up photography on land.

By storing the rod 3, the rod storage section 4 stores the rod 3 with only its tip 3a protruding outward. Therefore, in the bottom surface 4a of the rod storage portion 4, there is a rod storage hole 4b whose inner diameter and depth are large enough to accommodate the base 3b of the rod 1. Free movement of the inside of the rod storage hole 4b and between each stage of the rod 3 is restricted by friction, and the rod 3 can be expanded and contracted only by external force. Also, when extended, these rod storage parts 4
For example, a restricting portion 3c as shown in FIG.
The threaded portions 3d at each stage function to adjust the length of the rod 3 or to expand and contract it when it is pulled out.

The rod storage section 4 is attached to the side of the camera 2 so as to be rotatable around a shaft 2a, and is attached to the camera 2 in the state shown in FIG. 3 by a locking member such as a click. ° and the state shown in Figure 1.
Each can be locked at 90°.

Further, in order to prevent the rod 3 from entering the photographing range during photographing, the rod storage section 4 can be separated from the main body of the camera 2 along the axis 2a.

For purposes other than close-up photography, the rod storage section 4 is integrated with the camera 2 and is fixed by a locking mechanism (not shown), so that it can be grasped and functions as a grip (see FIG. 3).

e Effects of the Embodiment Next, the effects of the embodiment configured as described above will be explained.

For close-up photography, after releasing the locking mechanism (not shown) and separating the rod storage part 4 from the main body of the camera 2, raise it 90 degrees toward the front of the main body of the camera 2, point the bottom surface 4a toward the subject, and turn the tip Pull out the part 3a and stretch the rod 3. At this time, rod 3
If you pull out all the stages and extend them to the maximum extent, the tip part 3
A indicates the in-focus position of the subject during close-up photography underwater, but if only a specific number of steps are extracted, for example, it indicates the same in-focus position on land. The photographer only needs to align the subject with the position indicated by this tip 3a and take a picture.

In addition, the camera in the rod storage section 4 can be moved underwater and on land so that the tip 3a can indicate the boundary of the photographing range at the focusing position during close-up photography using a close-up lens underwater and on land. It may be possible to change the distance from 2 so that it can be separated.

Furthermore, if the rotation angle of the rod storage section 4 relative to the camera 2 can be fixed at any angle between 0° and 90°, the angle of the rod storage section 4 can be changed depending on the shooting condition. It can be used as a grip and allows you to take regular pictures in a stable position.

f Effect As mentioned above, according to this invention, there is a rod that can be expanded and contracted into multiple stages, and the sum of the lengths corresponds to a preset focusing position according to the number of expanded stages, and this rod The structure has a rod storage part that is rotatably supported relative to the camera body, which eliminates the inconvenience of carrying the distance gauge while it is still set, making it easier to carry. Does not interfere with underwater activities. In addition, one rod can easily handle close-up shooting distances on land and underwater, and the rod housing can also be used as a grip during shooting.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the usage state of one embodiment of this invention, and FIG. 2 is a sectional view of the main parts thereof.
FIG. 3 is a perspective view showing the storage state, and FIG. 4 is a perspective view showing a conventional example. 2... Camera body, 3... Rod body, 4... Rod storage section.

Claims (1)

[Claim for Utility Model Registration] A rod that can be expanded and contracted into multiple stages and whose sum of lengths corresponds to a preset focusing position according to the number of extended stages, and a rod that is rotatably provided on the camera body. , and a rod storage part that stores the rod, the rod storage part being formed so that it can be grasped, and fixed at a rotation angle such that at least the tip of the extension side of the rod faces the photographing direction. A distance gauge for close-up shooting characterized by being held.