Web Pinhole Calculator 3
v3.00  6/11/2004 [more error correction as time permits][Simple version here]
[Calculators]

PINHOLE CALCULATION

1) choose calculation direction:
Get Pinhole Size (mm) OR
Get Focal Length (mm)

2) Input here -> mm

3a) Choose light source:
Daylight Tungsten

3b) Filtered light?
no filter Red Green Blue
  other wavelength = mm

4) Choose magnification:
Landscape (infinity)
Closeup (1/3X) Macro (1X)
Micro (10X) Extreme Micro (100X)
  other magnification =

5) ASA/ISO of film used:

6) Sky conditions: clear bright high overcast or hazy overcast

     OR F16 exposure reads seconds

ANSWERS:


Distance from pinhole to subject is mm

1st exposure estimate is seconds

Pinhole size is mm
Focal Length is mm

If you change either pinhole or focal length above click

F-Stop is <- or manually change this value


INFORMATION FOR EXPOSURE CALCULATION
(calculate or change information in above section)

Filter used to achieve color wanted none 25 58 47 or filter factor

Type of Film: Tri-X or Plus-X T-Max 400 T-Max 100 Ilford B&W


CALCULATED EXPOSURE TIME IN SECONDS IS:

RECIPROCITY CORRECTED EXPOSURE TIME IN SECONDS IS:

See equations
Worked out with Paul Prober