Hi,jbeale wrote:Just put an external lens with focal length 5 cm in front of the camera. A small loupe might work for this, you probably want something like a 5x or 10x loupe.
You can buy cheap ("second" quality) plano-convex (PCX) lenses for $4 each from a place like http://www.surplusshed.com/lens.cfm
I have done this and it works, but be aware that your focal plane will not be exactly flat. In other words when you have good focus at the center of the image, the edges will be a little blurry, and vice-versa.
Another possibility is to (carefully) break the glue around the edge of the tiny lens on the camera and gently unscrew it so that it focuses closer: http://elinux.org/Rpi_Camera_Module#Adj ... Lens_Focus
If you unscrew the lens more than one full turn, it will come off (exposing the IR filter over the sensor, inviting dust trouble). About the closest you can get this way is about 6 cm.
Great you got it to work. If your lens is unscrewd to focus around 5 cm it is probably almost falling out- might want to secure it with a bit of glue or something. Just don't get that on the front of the lens of coursestarcraft04 wrote:- Is it possible to decrease a bit the quality of the picture to get smaller file size?
- The Raspberry Pi Camera Module is an Omnivision camera. Can I use other Omnivision camera like the 0.3 pixel one (OV 7670) connect it at the same place and use the same libraries, functions (raspistill) or will it not work?
Code: Select all
$ raspistill -q 50 -o test1.jpg $ raspistill -q 25 -o test2.jpg $ raspistill -q 5 -o test3.jpg $ ls -al *.jpg -rw-r--r-- 1 pi pi 1996313 Nov 14 09:54 test1.jpg -rw-r--r-- 1 pi pi 1095808 Nov 14 09:55 test2.jpg -rw-r--r-- 1 pi pi 137203 Nov 14 09:55 test3.jpg