My self-made digit's image is very strange. Is the gel is not correct or gel coating is too thin?

[pekkykang]

Hi, all:

I made some digit sensors by myself and I feel the image from the sensor is very strange. Compared with the image from Tacto emulator and image from the offical websit, my image is lack of three-dimensional. And I also feel the red and green light are too strong. Is my elastomer coating is too thin?

Any advice from the community will be extremely helpful to me. Thank you so much.