a small size.
b
pinhole camera, look it up
The daguerreotype.
A pinhole and a camera both determine how much light comes through to make a picture, if there isn't enough light in you photo . The photo wont show.
Make the hole smaller.
If you go to barnes&noble they sell a kit to make one..
Pin holiday camera light travels in straight lines
A pinhole camera is a very tiny camera that is modified to fit an object and be hidden from plain sight. Many pinhole cameras are called "nanny cams" as they are designed to fit in a teddy bear and placed in a child's room. You can buy them online from the Total Security Store and Hub Pages.
Pinhole cameras do work in real life. They just do not produce as good a quality of picture as most of our fancy high-tech cameras do. Partly, that is because you cannot regulate the light as well with a pinhole camera.
2015
A Pinhole camera.
I think a pinhole camera is similar to the human eye because like the pinhole camera when it sees something it reflects the image but it is an inverted image. With the human eye the brain corrects it and turns it the right way up. The pinhole cameras image is not corrected because it does not have a lens.