anyone know how to make a pinhole camera??

Question

How to make and use a pinhole camera by using common household materials.
I made one but it dosent work any ideas???

Answer 1

I have made them before many times. The problem is to make it absolutely light tight. I found that metal containers are the best, such as tins that have pull off lids. However, even these have light holes so you have to seal up any leaks, usually with flat black paint, oil base model paint is best, and then you line the inside with black construction paper. The lid needs to be sealed with black construction paper as well. For the actual pinhole, cutting a large hole is best and then tape a piece of aluminum foil over it, and puncture the foil with an ordinary pin. the smaller the hole, the sharper will be your image, but the longer will be your exposure time. I hope this helps.

Answer 2

I made a very large one by cutting 6 pieces of opaque wood composite material (thin plywood may not be enough).

4 pieces 8" x 10" (200mm x 250 mm) front, back + the two sides; 2 pieces 10"x10" (top and bottom).

Take front piece, drill a tiny hole dead centre. From the 'inside' side, open up the hole (One way is to take a very large drill bit but do not go all the way through). The idea is to have the 'thickness' of the hole the same as the width of the hole. The width of the hole (your aperture) should be around 2 mm (0.1 inch).

Assemble front, sides, top and bottom (glue and nails). The back side should be hinged. Then the back edges of the box should get a narrow ribbon of black velvet. The inside face of the back cover should also get velvet (at least where it will close on the edges). There should be a clasp of some sort that can keep the door tightly closed.

Cover the front hole with thick black tape, use a long piece and place it vertically.

In a portable dark room (large black bag where you can fit your arms through special sleeves), you take a sheet of 8 x 10 film (I used Ektachrome 64 ASA, same film used to make colour slides), place it emulsion towards the front. Close the camera and 'lock' it shut.
Don't forget to also close the film box...

I did not have a film holder because the box was a tiny bit too small for the film therefore it was held in place by the door itself.

Then you can take your camera outside the bag. Set it up for the picture.

If you have a 2 mm hole and a 250 mm 'focal length', then you'll need a one-second exposure for a daylight scene.

Pell back the tape to expose the hole (without removing the tape completely) and, after a mere second, close it again.

You must then go back to your dark room, remove the exposed film and put it in the 'exposed' portion of the film box; take a new un-exposed sheet and reload.

Keep going until you run out of sheets (ten to a box).

I made practice runs using 8 x 10 black & white photographic paper, equivalent to 6 ASA at best so I needed 10 second exposures. However, since B & W paper is only sensible to blue light, I was able to change the sheets (and process the exposed ones) in a real 'dark room' well lit up in red light. This way, I was able to see my results (negative B&W pictures) in minutes.

I do not know if they still make 8 x 10 film...

Answer 3

that's the main primative sort of digital camera. The digital camera obscura originated to disprove the Greek thought that mild got here out of your eyes which allowed one to make certain. in a protracted time the digital camera obscura grew to become into used as an painter's gadget to help the artist to get the perspectives real, and additionally as a victorian vacationer appeal. In present day-day a pinhole digital camera is used extra for experimental photos. regularly they're hom made, or a minimum of living house assembled, and characterize the very elementary of lo-fi photos. in line with hazard the pinhole image is now extra in basic terms a sprint artwork than it grew to become into interior the previous, being waiting to be an entity in that's own real.

Answer 4

http://www.wandascott.com/howtomake.html