Fixing Uneven Exposure on a Pentax Spotmatic

The Pentax Spotmatic is a classic 35mm SLR camera that is known for its reliability and image quality. However, like all mechanical cameras, it can sometimes develop problems. One common issue is uneven exposure, which can cause one side of the image to be darker than the other. This is usually caused by a problem with the shutter curtain tension.

In this tutorial, we will show you how to adjust the shutter curtain tension on a Pentax Spotmatic to correct uneven exposure. This is a relatively simple procedure that can be performed by anyone with basic mechanical skills.

Tools You Will Need

• A small screwdriver
• A light source (such as a flashlight)
• A piece of black tape

Steps

1. Remove the lens from the camera.
2. Open the camera back and remove the film rewind knob. This will expose the shutter mechanism.
3. Look for the two small screws that hold the shutter curtain tensioner in place. These screws are located on the left and right sides of the shutter mechanism.
4. Use your screwdriver to loosen the screws on the side that you want to adjust the tension on. If the right side of the image is darker, loosen the right side screw. If the left side is darker, loosen the left side screw.
5. Once you have loosened the screws, carefully rotate the shutter curtain tensioner until the shutter curtain moves evenly across the frame.
6. Tighten the screws back down.
7. Reinstall the film rewind knob and close the camera back.
8. Test the camera by taking a few test shots. If the exposure is still uneven, repeat steps 4-7 until the exposure is even.
9. Once you are satisfied with the results, you can put the lens back on the camera.

Tips

• When adjusting the shutter curtain tension, be careful not to overtighten the screws. This can damage the shutter mechanism.
• If you are unsure about any part of this procedure, it is best to take the camera to a qualified camera technician.

Conclusion

Uneven exposure is a common problem with Pentax Spotmatics, but it is a relatively easy fix. By following the steps outlined above, you can adjust the shutter curtain tension and restore your camera to its former glory.

If you have any questions or comments, please feel free to leave them below.