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In this article, we will discuss about How to know if vertical alignment is off on your rangefinder.
Let’s find out!
Vertical Alignment In Rangefinder
To know if the rangefinder is vertically aligned you need to focus on an object or something. Keep in mind the vertical and horizontal lines should be clearly defined.
Once you get squared onto an object and everything is inline at a certain focal point without ghosting then it means that your rangefinder is vertically aligned.
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Adjusting the rangefinder
To adjust your rangefinder you need to adjust the focus ring until it aligns perfectly with the center of your target.
Then, you should move the lens back into position. This is done by turning the focus ring clockwise or counter-clockwise as needed.
Vertical RF Alignment
If you have a late-model M4-P or later, you’ll need to use a special radio frequency (RF) adjustment tool. Remove the Leica logo above the lens mount, and adjust the focus by turning the screw.
This is a nuisance and Leica deliberately introduced it to stop weekend warriors from adjusting their lenses. You cannot use any other tools than the ones supplied by Leica.
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Horizontal RF Adjustment
Adjusting the RF patch alignment at infinity is very easy. You need a screwdriver that fits perfectly.
Apply to turn force only. Don’t push against the rangefinder arm.
When adjusting your telescope, make sure you’re looking at something really far away (like the moon), and then adjust the scope until it looks perfect. You’ll probably be adjusting the focus knob too.
The eccentric screw holds the roller so it doesn’t move when you turn the dial. This allows you to zero the rangefinder so you can accurately measure distances.
The eccentric pivot lets you adjust how much movement there is between turning the dial and moving the lens. This helps you get the right amount of movement needed to get accurate results.
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How Do I Know If Vertical Alignment Is Off Rangefinder?
More Adjustments
When you correct for infinity, the far focus will also be accurate.
Close Focus
When using a camera with an autofocus system, make sure that your camera does not need any focus before taking pictures. This will help prevent blurry images.
A vertical line should be drawn in front of the camera. This helps focus.
Mount the camera on a tripod. Put the camera on a tripod, so that the sensor plane is 1m away from the highlighted line of the text.
Focus on the line of text, with the lens aperture set to minimum focus distance. Take several test shots without focusing the lens between each shot.
The camera is focused correctly.
To adjust the base length, remove the top plate. To adjust the infinity focus, turn screw 2 counterclockwise. Then check the close focus.
Front focus: turn screw 1 anti-clockwise.
Back focus: turn the screw 1 clockwise.
These are the usual screw adjustment direction, but they may be reversed. If the close-focus is too large to be correct by adjusting screw 1, then you will need to take off the top plate so that screw 4 can be turned around.
If this is the situation, adjust screws 1 and 2 for finding the patch focus and infinity focus respectively, before turning the screw 4.
Infinity focus is adjusted by adjusting the distance between screws 2 and 4.
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Reassembly
Adjustment screws should be locked with a thread-locking compound. Low-strength compound must be used. Screws can’t be moved after sealing them.
The vertical adjustment screw can’t be sealed because of limited access.
Removing the Rewind Crank
You should always start off with the REWIND CRANK! If there are no screws hidden inside the camera, you can remove the crank by opening the back, putting a screwdriver across the spindle, and unscrewing the anti-clockwise.
Turn the rewind crank clockwise.
Locating and Removing Screws
The Canon camera has two screws on the side of the top plate. These are used to attach the lens mount. On the Konica, there is only one screw on the side of the body. This is used to attach the lens.
Removing the Film Advance
To remove the cap, wind-off lever, and springs, use a pair of dividers to carefully pry up the cap. Remove the lever and cam by using the same method.
The Canon camera has an internal mechanism that allows you to adjust the aperture (f-stop) by turning a screw under the lens.
There is also a mechanism that allows you to turn the shutter speed dial to change the exposure time.
You can remove the top plate by lifting up the wind-on lever. There is a screw holding down the spacing washer.
Lifting the Lid
The camera is held together by screws. Remove them carefully.
Some rangefinders have solder connections. This means that you should check your camera before buying it. You might get a different result if you use a different brand or model.
Adjustment
This camera looks like a standard part. It was probably designed by someone who worked for a company that makes cameras. There are many different models of this type of camera. The vertical adjustment is adjustable from the top.
This camera has a built-in flash. The flash is located under the lens. To adjust the flash you must remove the top plate of the camera.
The Canon rangefinder doesn’t use a moving mirror. Instead, it uses an optical unit attached to the lens’ focusing mechanism to get the coincident image.
This technique reminds me of the rotating prisms found on Zeiss lenses. I think this is a very elegant design.
The Canon rangefinder camera uses an optical system consisting of two lenses and a prism. The first lens is called the objective lens and focuses light onto the film plane.
The second lens is called the eyepiece lens and magnifies the image focused by the objective lens. A prism splits the incoming rays into To two beams.
Canonet 28 rangefinder has a horizontal adjustment screw that moves the lens mount. This screw should be adjusted until the vertical line of the rangefinder is aligned with the vertical line of the image plane.
Final Words
For those who have a nice camera with vertical alignment issues, here is an article that explains how to solve them.
If you have any further queries feel free to reach out in the comments section below.
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