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Worksheetsphotography 2nd exam
Total questions: 25
Worksheet time: 15mins
Characterized by the fact that it is thinner at the center and thicker at the side and forms the virtual image on the same side of the lens. (ZOOM OUT)
Negative or Concave Lens (diverging lens)
Positive or Convex Lens (converging lens)
First to introduce the use of lens in the camera
(a)
A medium or system which converge or diverge light rays passing through it to form an image.
Apperture
Shutter
Lens
An essential part of the camera which is used to focus the light coming from the subject, it is mainly responsible for the sharpness of the image formed through which light passes during exposure
Shutter
Lens
Aperture
Characterized by the fact that it is thicker at the center and thinner at the side which is capable of bending the light together and forms the image inversely.
(ZOOM IN)
Positive or Convex Lens (converging lens)
Negative or convex lens (diverging lens)
Inability of the lens to focus light passing the side of the lens producing an image that is sharp in the center and blurred at the side.
Spherical aberration
COMA
A kind of lens coma results in a star image near the outer edges of the viewing filed seeming to have comet - style tail scattering radially towards its optical axis (center)
Negative coma
Positive coma
Is the failure of light rays to focus properly after they pass through a lens or reflect from a mirror. Proper focus occurs when the light rays cross one another at single point.
(a)
Scattering radially away from its optical axis
Negative coma
Positive coma
The term Coma was coined 1733 by French mathematician ______
Alexis Clairaut
daniel barbaro
Inability of the lens to focus light that travels straight or lateral, thus making it blurred while the light reaching the lens oblique is the one the is transmitted sharp. it is a lens defect in which the rays enter the lens obliquely
Lateral aberration
Spherical aberration
The inability of the lens to produce images sizes of object with different color.
Astigmatism
CHROMATIC DIFFERENCE OF MAGNIFICATION
Inability of the lens to bring photographic rays of different wave lengths to the same focus.
Chromatic aberration
Astigmatism
Condition of the lens producing multiple images.
Flares
astigmatism
Is a defect in shape not in sharpness. It can either be Pincushion or BarrelDistortion
Field of curvature
Distortion
straight lines near the edges of the frame bow outward from the center. The curvina is outward
Pincushion
Barrel
Is the failure of different colored light rays to focus after passing through a lens, focusing of light of different colors at different points resulting in a blurred image. This is the most difficult lens aberration to correct.
Chromatic aberration
Flares
The relation of the images of the different point are incorrect with respect to one another. (Circular dome like image)
Curvature of field
Barrel
there is straight lines near the edges of the frame bow toward the center of frame. The curving is inward
Pincushion
Barrel
a form of lens defects in which the horizontal and vertical axis are not equally magnified. Inability of the lens to focus both horizontal and vertical lines.
Astigmatism
Flares
RAPID RECTILINEAR LENS(AKA APLANAT) was introduced by _____
John Henry dallmeyer
Daniel barbaro
Lens that has no corrections
(a)
A super-corrected lens for astigmatism. It has a better color correction and has the ability to produce the best definition of image in the photographs.
(a)
Lens corrected of distortion
RAPID RECTILINEAR LENS(AKA APLANAT)
Fixed focus lens
Correcting both astigmatism and chromatic aberration
APOCHROMATIC/APOCHROMAT LENS
Achromatic/achromat lens
