Pinhole Photography
what are the only things you NEED in a pinhole camera?
(light-tight)
aperture
body
(hole)
shutter
(and something light-sensitive if you want to make a permanent image)
how does it work?
I want to take ta ke a photograph of this awesome thing
sun
photo paper
your pinhole camera doesn’ doesn’tt hav have e “settings”...
but what can you control?
aperture size
exposure time
(how long is the shutter open?)
focal length
(aperture to paper)
FOCAL LENGTH - affects how zoomed in the image is
How did the size of the hole in our room window affect the image? Moving the focal plane (tracing paper or photo paper) changes the size and focus of the image.
How did the size of the hole in our room window affect the image? Moving the focal plane (tracing paper or photo paper) changes the size and focus of the image.
ALSO - you can control how far away your camera is from what you are photographing
Focal Length X wavelength of light
Aperture Diameter = 1.9
Wavelength (usually the wavelength for yellow/green light 0.00055 mm is used)
Aperture Diameter = 1.9
0.446mm = 1.9
101.6mm (4”) X 0.00055mm
101.6mm (4”) X 0.00055mm
0.017” = Aperture/Pinhole
The f-number of the camera may be calculated by dividing the distance from the pinhole to the imaging plane (the focal length) length) by the diameter of the pinhole. For example, a camera with a 0.02 inch (0.5 mm) diameter pinhole, and a 2 inch (50 mm) focal length would have an f-number of 2/0.02 (50/0.5), or 100 ( f / / 100 in conventional conventional notation).
ƒ-number =
ƒ-number =
Focal Length Aperture Diameter 4 inch 0.017” (0.45mm)
ƒ/235 = 13
3” = .015
14”
6”
shutter 9.5” aperture
bottom
side and lid
water what do I do?
cleans the print (washes off all the chemicals)
how long? I should be replaced when...
sink
5 minutes N/A
fixer
stop bath
developer
stabilizes the image
stops the developing
develops the paper (oxidizes silver)
(removes unexposed silver from the paper)
(low pH = acid, neutralizes the developer)
(pH 11 or 12 = base)
5 minutes if I get cloudy when you drip hypo check in
30 sec
1 1/2 minutes (90 sec)
if I am a dark purple color
if I am a brown color
Keep tongs organized & drip off prints
YES
Check to see if chemistry chemistr y is exhausted . . . Hypo Chek turns cloudy when dripped into FIXER
DEVELOPER turns brown STOP BATH turns purple
If so, developer and stop go down the drain, fixer goes in the bucket
Pinhole Photography
Name:
OBJECTIVE: Complete Complete a pinhole photograph considering the composition! light source! focal distance! exposure! and subject matter" Issues related to pinhole photography concerning contrast ! camera steadiness! subject size and distortion should be considered "
Tape them together as shown !
Photographs. What was the most rewarding part of taking photos and making positives with your camera and the darkroom $ digital digital lab?
What was the most challenging part?
How did you overcome this di %culty?
What would you do di & erently erently or do more of with pinhole photography?
Camera . What surprised you most about the construction and use of your camera?
How well did your camera perform in taking photos?
Did you have to solve any problems related to your camera ! if so! what were they and how did you solve the problem?
NEGATIVE time
POSITIVE aperture setting
distance
time
weather
Self # Assessment
Presentation:
Design:
Studio Skills:
Objective:
Prints are cut or cropped neatly! Photos are taped together!
Photos show consideration of subject matter" light source" proximity of camera camera to your subjects" and composition!
Photograph is developed" and printed properly" using correct darkroom procedures !
Completed a pinhole photograph " labeling exposure" light conditions" and subject distance as well as positive exposure times! Issues related to pinhole photography concerning contrast" camera steadiness " and subject size and distortion are understood ! $%&
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Total:
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Teacher Assessment
$%&
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Starting Time for sunny
2 minutes 2 minutes 1 " minutes 1 " minutes 1 minute 1 minute 30 seconds
Problem: Experiment with different exposure times informed by the amount of light and the focal distance of your camera to create a successful pinhole negative. Document everything! In your sketchbook, sketchbook , tape in every single pinhole exposure you make, and write down the exposure time (seconds), the quality of the light, and a description of what you can do to improve your exposure the next time.
(40 points total)
The Pinhole Camera
(10 points) Function 1) Your pinhole camera is light-tight, all visible light leaks have been sealed. 2) Your camera has a working aperture, apert ure, shutter, shutter, and paper loading mechanism (flat wall to place photographic paper upon). It has been carefully painted black inside of the body. body.
(40 points)
The Pinhole Camera
(10 points) Design 1) Your camera can close to seal the interior space from light without requiring lots of tape. 2) The material or object you are making your camera from has been clearly considered to enable the camera to function easily.
(40 points)
The Pinhole Camera
(20 points) Craft 1) You have demonstrated careful and efficient use of scissors, scissor s, knives, tape (black ( black and masking maskin g tape), tape ), spray paint, paint , and other building materials to make your pinhole camera. 2) Your pinhole p inhole camera has been b een built to be b e strong, durable, durabl e, and sturdy stu rdy.. You have addressed any structura st ructurall weaknesses weakne sses as best as possible. 3) Your camera demonstrates care and craft in its construction. constru ction. You have invested time in the t he camera’ came ra’ss overall appearance.
