We need to take very clear images of flat objects that are roughly 5 x 3 inches. We bought the RB-Adu-51 and have it working on a RaspberryPi. This is mounted in the top of a Mount Dog Studio Box for excellent lighting. The image quality is not great. We get better quality from a flatbed scanner. Focusing is tedious. There is some fisheye. But mostly it just seems blurry. We are unable to get perfect focus from it.
Can someone recommend a CS lens for taking images 3x5 inches?
Thanks!
Hello @FreeGoldRush , great to see you around!
Check this options:
Hope this could help you out.
Carlos.
Carlos, thank you for replying. The first item on your list is the RB-Adu-51 that I wrote about. That’s the one we have. You linked to M12 lenses. Can those be put on the RB-Adu-51 or do I need something called a “CS lens”?
Each of the options in the links you provided appear to be very different. One says it is appropriate for photographing wildlife. I would not have guessed that would also be a good option for closeups of 3x5 images. What is it about that lens that makes it appropriate for both?
Thanks again.
Hey, lets go inside the problem:
First, we should understand the type of mount you have, CS: https://www.youtube.com/watch?v=MtHm6UIcDhQ
Second, I looked in the camera and I found that in the market the RB-Adu-51 present the best performance among others. This is due to the type of camera and the way it connects to the raspberry. Certainly the lenses M12 that sent you, won’t work directly but it is customizable. In this video is shown how to replace the lenses type: https://www.youtube.com/watch?v=23jE0l8PTKA
Specifically for your closeup problem, I found your camera is adjustable focus. When you say it’s tedious, what do you mean? Is the process manual?
I can’t really find any lens options that you can put on top of your camera. I’ll keep reading and if I find anything I’ll let you know.
Carlos.
The focus is tedious because extremely small movements in the focus ring will take it out of focus when working at close range. It’s really not possible to get perfect focus and images are a bit blurry when looking at fine detail. Yes, focusing requires that you manually twist the lens.
If this is the best camera for this application then we will have to find another one. The high resolution photo sensor is nice, but that extra resolution doesn’t really serve a purpose if you can’t properly focus the light onto the sensor. I think our next attempt will be to mount a DSLR camera. Cannon now makes an API for communicating with their cameras.
After some more testing it looks like this camera is defective. Maybe there is dirt between the image sensor and lens (I haven’t removed the lens). Any other camera we have tested takes dramatically better pictures. I need to return this for a refund.
Yes, it was purchased at RobotShop. It’s the rb-adu-51. We really wanted this to work but we just can’t get the picture quality from it that we can from other cameras.
This topic was transferred to internal RobotShop Support.
