LSAT 110 – Section 2 – Question 16

LSAT 110 - Section 2 - Question 16

June 2001

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT110 S2 Q16
+LR
Necessary assumption +NA
A
8%
164
B
63%
168
C
9%
161
D
1%
153
E
19%
162
150
160
171
 +Hardest 145.606 +SubsectionMedium

Camera manufacturers typically advertise their products by citing the resolution of their cameras’ lenses, the resolution of a lens being the degree of detail the lens is capable of reproducing in the image it projects onto the film. Differences between cameras in this respect are irrelevant for practical photography, however, since all modern lenses are so excellent that they project far more detail onto the film than any photographic film is capable of reproducing in a developed image.

Summary
The author concludes that differences in camera lens resolution are irrelevant for practical photography. Why? Because all modern lenses project far more detail onto film than any photographic film can reproduce in a developed image.

Notable Assumptions
What if differences in resolution could be important to some aspect of practical photography besides the amount of detail projected onto film? The author assumes that there’s no other way in which differences in resolution could be relevant to practical photography.
This isn’t a question where I’d go in with a specific prediction about what the author assumes. Let’s keep an open mind.

A
The definition of the term “resolution” does not capture an important determinant of the quality of photographic instruments and materials.
The author could very well agree that “resolution” captures something important about the quality of photographic instruments and materials, such as camera lens and film. The point, however, is that the differences in resolution of camera lens aren’t practically relevant. “Resolution” is still an important feature, but the differences in camera lens resolution don’t have to be.
B
In determining the amount of detail reproduced in the developed photographic image, differences in the resolutions of available lenses do not compound the deficiencies of available film.
(B) is necessary because if it were not true — if differences in lens resolution DO compound (in other words, make worse) the deficiencies of film, then this is a reason lens resolution might make a practical difference. So the author must assume that differences in lens resolution do NOT make worse the deficiencies of film in order to conclude that there’s no practical difference between different lens resolutions.
C
Variations in the method used to process the film do not have any significant effect on the film’s resolution.
(C) doesn’t say anything about camera lens resolution. The author doesn’t have to assume anything about film resolution except as it relates to camera lens resolution. If variations in processing film do have large effects on film’s resolution, that doesn’t undermine the author’s point, which is that camera lens project more detail than any film can capture in an image, and that this is why lens resolution differences don’t matter.
D
Flawless photographic technique is needed to achieve the maximum image resolution possible with the materials and equipment being used.
The author asserts that modern lenses project far more detail onto film than any film can reproduce. But there’s no indication the author believes we “need” to use “flawless” technique achieve this level of detail or any other level of detail.
E
The only factors important in determining the degree of detail reproduced in the final photographic print are the resolution of the camera’s lens and the resolution of the film.
(E) isn’t necessary, because even if there are other factors important to the level of detail in the final print (such as the quality of a printer, perhaps), the author’s reasoning involves only the relationship between lens resolution and the detail reproducible on a developed image. After we get the image, there might be further factors that affect the detail of a printed image, but the author’s argument doesn’t relate to this stage.

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LSAT PrepTest 110 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Reading Comprehension

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