- #1
ElectricPaint
- 9
- 0
Hello everyone!
I recently bought a small raspberryPi board, with its small "camera board".
(link for camera reference)
I want to use a CS lens on this camera (CS lens from the security camera industry).
I have been able to attach the lens, and it focuses very good, yet not "excellent".
Specifically, the center of the image is focused, yet the edges are blurry.
I will go down the list of things I have done to provide some background:
- The raspberry pi camera alone works awesome. Very good image quality.
- There is a seller in eBay that sells his own "rPi camera board" with a close range CS lens.
- I ordered this camera board and took it apart.
- The CS lens mount is made out of metal.
When I installed a longer range CS lens on this mount, the image was blurry. I could not get it to "focus" with sharpness.
Trying things out, I removed some material from the top part of the mount - this makes the CS lens sit CLOSER to the image sensor.
With this setup, I was able to get the long range CS lens to focus very good.
Yet, as best as I could get it, the "edges" of the image are out of focus.
Now is where I have doubts:
What else can I do to make the image sharp?
I don't think it is any changing the distance between the image sensor of the camera and the CS lens.
(Is that the "focal point"?)
As a side-note: I have an Axis 211M camera. Excellent unit.
In between the CS lens and the image sensor, Axis has setup a small "pane" of transparent material.
I don't know if it is glass, acrylic, or some "boro-silicate" glass type.
Its shape is the same exterior dimensions as the image sensor... yet it is thick.
I was wondering if this somehow helps the image sensor receive a focused image from the CS lens?
I can upload photos of the components if so desired by someone.
All help and direction is greately welcomed.
Thank you!
I recently bought a small raspberryPi board, with its small "camera board".
(link for camera reference)
I want to use a CS lens on this camera (CS lens from the security camera industry).
I have been able to attach the lens, and it focuses very good, yet not "excellent".
Specifically, the center of the image is focused, yet the edges are blurry.
I will go down the list of things I have done to provide some background:
- The raspberry pi camera alone works awesome. Very good image quality.
- There is a seller in eBay that sells his own "rPi camera board" with a close range CS lens.
- I ordered this camera board and took it apart.
- The CS lens mount is made out of metal.
When I installed a longer range CS lens on this mount, the image was blurry. I could not get it to "focus" with sharpness.
Trying things out, I removed some material from the top part of the mount - this makes the CS lens sit CLOSER to the image sensor.
With this setup, I was able to get the long range CS lens to focus very good.
Yet, as best as I could get it, the "edges" of the image are out of focus.
Now is where I have doubts:
What else can I do to make the image sharp?
I don't think it is any changing the distance between the image sensor of the camera and the CS lens.
(Is that the "focal point"?)
As a side-note: I have an Axis 211M camera. Excellent unit.
In between the CS lens and the image sensor, Axis has setup a small "pane" of transparent material.
I don't know if it is glass, acrylic, or some "boro-silicate" glass type.
Its shape is the same exterior dimensions as the image sensor... yet it is thick.
I was wondering if this somehow helps the image sensor receive a focused image from the CS lens?
I can upload photos of the components if so desired by someone.
All help and direction is greately welcomed.
Thank you!