2. The dark cloth covering the photographer and the box
body of the camera blocks out undesirable light, which
might otherwise interfere with the picture
5. •A simple camera can be built by making a
pinhole in a box. Light passes through the
hole and forms an inverted, backwards
image of the subject on the back of the
box. The image will be somewhat dim, but
the detail sharp enough that properly
placed film will produce a good
photograph. However, this kind of
photography only works if the film receives
absolutely no other light.
6.
7. A parts of Cameras
Lens
• The lens is the eye of the camera. Its
function is to bring light from the subject
into focus on the film
Film
Aperture
• The lens diaphragm controls the size of
the aperture, or lens opening, and thus the
amount of light that passes through the
lens.
10. •The photographer, or an automatic
mechanism in some cameras, must
adjust the distance between the lens
and the film so that the plane of focus
falls exactly where the film lies,
making the resulting image appear in
focus.
14. Persamaan antara mata dan kamera
Mata
• Lensa mata
• Iris
• Pupil
• Retina
• Sifat bayangan
Kamera
•Lensa
•Diafragma
•Aperture
•Film
•Sifat bayangan
15. Perbedaan Kacamata dan Kamera
mata
•Jarak bayangan
tetap
•Untuk menempatkan
bayangan agar jatuh
di retina dilakukan
dengan mengubah
jarak fokus lensa
Kamera
•Jarak bayangan
berubah
•Untuk menempatkan
bayangan agar jatuh
di film dilakukan
dengan menggeser
lensa
17. Bagaimana Lup digunakan
• Alat untuk memperbesar bayangan
• Bayangan yang terbentuk adalah maya
• Benda diletakkan di ruang 1
• Ada dua cara pengamatan dengan lup
– Mata berakomodasi
– Mata tidak berakomodasi
21. Bagaimana Mikroskop bekerja
• Terdiri dari susunan dua buah lensa positif
• Lensa obyektif memiliki fokus lebih kecil
dibanding lensa okuler
• Prinsip kerja mikroskop adalah
membentuk bayangan nyata yang selalu
diperbesar
• Benda harus diletakkan di ruang 2 lensa
obyektif
