Camera Pinhole
August 15th, 2010
Why pinhole camera is impractical as a photographic tool?
Explain why, in relation to camera and optics and film, a pinhole camera is impractical as a photographic tool.
I can think of some answers but for my revision i need to think of 5 points worth of answers! Please could someone help!
Thanks
Well a pinhole has a number of shortcomings due to the physical restrictions, it doesn't mean that it's useless but is very limited.
The aperture is very small this means that you start observing diffraction effects, this produces rather undesirable rings.
Also such small apertures requires high ISO or a slower shutter speed. And the depth of field is effectively infinite.
Because there are no lenses, to achieve longer focal lengths the construction must be very very long, and neither can you get wider angles.
The main problem however is that the final image isn't really sharp so it's really not very good compared to our modern systems using lenses.
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