Macro adapter ring for switching Leica M lens to frame camera in Fuji GFX

Abstract

The utility model relates to the field of a connection technology for switching a Leica M lens to a frame camera in Fuji GFX, in particular to a macro switching ring for switching the Leica M lens to the frame camera in the Fuji GFX. Comprising a Leica M lens base, an adjusting ring, a driving connecting ring, a Fuji GFX middle picture camera bayonet, an auxiliary focusing threaded ring, a movable guide block, a Leica M lens spring piece, a Leica M lens pin, a Leica M lens button and a rotary limiting block. According to the utility model, two groups of multi-head threads with different spiral directions are matched with each other, and the rotation movement range is set through a linear guide structure so as to keep movement in the same direction, so that the two groups of multi-head threads synchronously stretch out and draw back to lengthen or shorten the movement distance so as to shoot microspur; compared with a single-thread micro-distance adapter ring, the micro-distance adapter ring has the advantages that a larger moving adjustment range is realized, and a close-distance object can be better shot and a micro-distance shooting function can be amplified.

Description

Technical Field

[0001] This utility model relates to the field of Leica M lens to Fujifilm GFX medium format camera connection technology, specifically a macro adapter ring for Leica M lens to Fujifilm GFX medium format camera. Background Technology

[0002] Currently, when using a Fujifilm GFX medium format camera with Leica M lenses, the adapter ring cannot be adjusted to achieve macro photography. Many photographers hope to add an adapter ring with adjustable macro magnification to the Fujifilm GFX medium format camera to expand the lens's shooting capabilities and provide different experiences. However, the flange distance of the Fujifilm GFX medium format camera and the Leica M lens is too small to allow for adjusting the mechanical structure of the adapter ring to achieve macro photography. The flange distance of the Fujifilm GFX medium format camera mount is 26.7mm, while the flange distance of the Leica M lens mount is 27.8mm, a difference of 1.1mm. It is difficult to design an adapter ring with an extended mechanical structure to add adjustable macro functionality. To enable Leica M lenses to be adjustable and extend their macro magnification capabilities on the Fujifilm GFX medium format camera, this invention addresses this issue. This new technical solution allows for an 8mm increase in linear movement between the Leica M lens and the Fujifilm GFX medium format camera using an existing adapter ring, achieving macro shooting functionality. This provides Leica M lenses with a multi-functional experience, allowing a single adapter ring to serve two purposes: as a regular adapter ring and as a macro adapter ring. This significantly reduces costs for photographers and solves the problem of not being able to adjust and extend the adapter ring structure for macro shooting, thus fully expanding the capabilities of Leica M lenses. A search revealed no identical or similar technical solutions to this invention. Utility Model Content

[0003] This invention aims to solve one of the technical problems existing in the prior art. This invention proposes a macro adapter ring for Leica M lenses to Fujifilm GFX medium format cameras. This adapter ring allows for linear adjustment of its internal structure by 8mm, enabling Leica M lenses to be used at closer distances for better macro photography. It also saves on usage costs, bringing great convenience and benefits to photographers.

[0004] The technical solution adopted in this utility model is as follows: two sets of multi-threaded screws with different helical directions are connected to each other. Through a linear guide structure, the rotational movement range is set so that they move in the same direction, thereby realizing the synchronous extension and retraction of the two sets of multi-threaded screws to lengthen the movement distance. The first set of multi-threaded screws can be linearly adjusted by 3mm, and the second set of multi-threaded screws can be linearly adjusted by 5mm. The Leica M lens to Fuji GFX medium format camera macro adapter ring assembly includes a Leica M lens base (1), an adjustment ring (2), a drive connecting ring (3), a Fuji GFX medium format camera mount (4), a secondary focusing threaded ring (5), a moving guide block (6), a Leica M lens spring sheet (7), a Leica M lens pin (8), a Leica M lens button (9), and a rotation limit block (10).

[0005] The internal thread (4a) of the Fujifilm GFX medium format camera mount (4) and the external thread (3b) of the drive connecting ring (3) form the first set of threads, and the external thread (5a) of the secondary focusing thread ring (5) and the internal thread (3c) of the drive connecting ring (3) form the second set of threads. Under the constraint of the moving guide block (6), the two sets of threads can be used to linearly adjust the macro adjustment stroke of 8mm.

[0006] The moving guide block (6) is used to guide and limit the second thread for driving adjustment. The moving guide block (6) is connected to the second thread to prevent the lens from rotating in different directions and moving a distance in one direction.

[0007] A rotation limit block (10) is installed on the mount of the Fuji GFX medium format camera to control the stroke of the thread rotation. When driving the connecting ring (3), the adjustment can only be made within the range of the arc groove of the driving connecting ring (3a) to limit the stroke and prevent the adapter ring from disengaging and falling off.

[0008] The adjusting ring (2) is connected to the drive connecting ring (3), and the adjusting ring (2) is used to drive the movement stroke.

[0009] The moving guide block (6) is installed on the Fuji GFX medium format camera mount (4).

[0010] A rotation limit block (10) is installed on the mount (10a) of the Fujifilm GFX medium format camera to control the rotation limit travel. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the assembly and disassembly of this utility model.

[0012] Figure 2 This is a cross-sectional view of the assembly of this utility model.

[0013] Figure 3 This is a schematic diagram of the mounting surface of the Leica M lens of this utility model.

[0014] Figure 4 This is a schematic diagram of the mounting surface of the Fuji GFX medium format lens mount of this utility model.

[0015] In the diagram: Leica M lens mount (1), adjustment ring (2), drive connecting ring (3), Fujifilm GFX medium format camera mount (4), secondary focus threaded ring (5), moving guide block (6), Leica M lens spring (7), Leica M lens pin (8), Leica M lens button (9), rotation limit block (10), Fujifilm GFX medium format camera mount (4) rotation limit block mounting hole (10a), drive connecting ring (3) arc-shaped groove (3a), drive connecting ring (3) external thread (3b), drive connecting ring (3) internal thread (3c), Fujifilm GFX medium format camera mount (4) internal thread (4a), secondary focus threaded ring (5) external thread (5a) Detailed Implementation

[0016] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprising," "including," and any variations thereof are intended to cover non-exclusive inclusion.

[0017] The following is a detailed description of the present invention in conjunction with specific embodiments thereof:

[0018] As shown in the schematic diagram, this utility model discloses a Leica M lens to Fujifilm GFX medium format camera macro adapter ring, which consists of a Leica M lens base (1), an adjustment ring (2), a drive connecting ring (3), a Fujifilm GFX medium format camera mount (4), a secondary focusing threaded ring (5), a moving guide block (6), a Leica M lens spring sheet (7), a Leica M lens pin (8), a Leica M lens button (9), and a rotation limit block (10). Its key feature is the use of two sets of multi-start threads with different helical directions connected together. A linear guide structure is used to set the rotational movement range, ensuring that the two sets of multi-start threads move synchronously to adjust macro shooting. The Fujifilm GFX medium format camera mount (4) is provided with a right-hand multi-start thread (a4) that connects with the drive connecting ring (3) thread (3b) to form the first set of threads. The drive connecting ring (3) is equipped with a left-hand multi-start thread (3c) and a secondary focusing thread ring (5) multi-start thread (5a) to form a second set of threads. The drive connecting ring (3) is connected to the adjusting ring (2), and the two sets of different multi-start threads are driven to rotate through the adjusting ring (2) to adjust the micro-distance function.

[0019] The internal thread (4a) of the Fujifilm GFX medium format camera mount (4) and the external thread (3b) of the drive connecting ring (3) are connected to form the first set of threads, which are right-hand threads.

[0020] The external thread (5a) of the auxiliary focusing thread ring (5) and the internal thread (3c) of the drive connecting ring (3) are connected to form a second set of threads, which is a left-hand thread.

[0021] The Fujifilm GFX medium format camera mount (4) internal thread (4a) and drive connecting ring (3) external thread (3b) form the first set of threads, and the auxiliary focusing thread ring (5) external thread (5a) and drive connecting ring (3) internal thread (3c) form the second set of threads, relying on the moving guide block (6) as a straight guide connection.

[0022] The Fujifilm GFX medium format camera mount (4) and the secondary focusing thread ring (5) connected to the external thread (3b) of the rotating drive connecting ring (3) and the internal thread (3c) of the drive connecting ring (3) achieve synchronous linear movement distance by preventing and limiting rotation through the moving guide block (6).

[0023] A rotation limit block (10) is provided in the rotation limit block mounting hole (10a) of the Fuji GFX medium format camera mount (4) to control the rotation limit stroke.

[0024] The adjustment ring (2) is connected to the drive connecting ring (3). By rotating the adjustment ring (2) and adjusting the drive connecting ring (3), the travel distance can be extended or shortened to adjust the shooting macro.

[0025] The above-described embodiments of the utility model are merely illustrative of the technical concept and solution for a Leica M lens to Fujifilm GFX medium format camera macro adapter ring. Their purpose is to enable those skilled in the art to understand and implement the technology. However, the scope of protection of this utility model is not limited thereto. Equivalent substitutions or modifications based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A macro adapter ring for adapting a Leica M lens to a Fujifilm GFX medium format camera, characterized in that: The two groups of multi-start threads with different screw directions are connected with each other, a linear guide structure is arranged, a rotating moving range is set, the same direction movement is kept, and the two groups of multi-start threads are synchronously stretched or shortened to realize micro distance shooting.

2. The macro adapter ring for adapting Leica M lens to Fujifilm GFX medium format camera according to claim 1, characterized in that: The Fuji GFX medium format camera lens mount (4) is provided with a rotation limiting block (10), which prevents the lens from falling off due to disconnection when rotating beyond the limit.

3. The macro adapter ring for adapting Leica M lens to Fujifilm GFX medium format camera according to claim 2, characterized in that: The Fuji GFX medium format camera lens mount (4) is provided with a right-hand multi-start thread (a4) and a driving connection ring (3) threaded (3b) connection to form a first group of threads.

4. The macro adapter ring according to claim 3, characterized in that: The driving connection ring (3) is provided with a left-hand multi-start thread (3c) and a secondary focusing thread ring (5) multi-start thread (5a) connection to form a second group of threads.

5. The macro adapter ring according to claim 4, characterized in that: The Fuji GFX medium format camera lens mount (4) is provided with a moving guide block (6), which is a guide structure for the two groups of multi-start threads with different screw directions, limits the rotation of the two groups of threads, and realizes the linear movement of the two groups of different multi-start threads in one direction.

6. The macro adapter ring according to claim 5, characterized in that: The driving connection ring (3) is connected with the adjusting ring (2), and the adjusting ring (2) is used to drive the rotation of the two groups of different multi-start threads to adjust the micro distance function.

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