An image is created onto photographic paper because of light conditions and exposure timings. The brighter the area is that you are capturing the image from, the shorter length of time you are going to need to exposure your pinhole for. Therefore the darker the area you are using, the longer you will have to leave the camera to expose for. This is because of the photographic paper takes longer to capture the when it is darker, therefore it take a short exposure time to capture the image when in a bright area. So if you were to capture an image outside it would take a short time due to the brightness being very bright. My images took about 30 seconds when capturing outside. But when capturing images it took a lot longer, some took about 20 minutes.
To calculate our F.stop distance we had to do a calculation
Focus length 72
------------- = F.stop --------- = 90
aperture 0.8
Therefore interier shots should be about 30 minutes and outerier should be about 30 seconds
Wednesday, 21 October 2009
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment