There are many factors which could have contributed to the differences between the original and replicate figure. The clear difference in lighting could have multiple factors. The time of day could be different which would lead to differences in light color, intensity, and the direction of the rays on the plant in the pictures. If the replicate was taken later in the day or early in the morning, that could explain the low light intensity. Weather could also be causing these differences, as the original was taken on a day clear enough for the sun to brightly illuminate everything, the replicate could have been taken on an overcast day which limits light intensity. A difference in camera would also lead to the variation in light, color, focus, and quality of the two figures. A combination of these factors could have also been affecting the different outcomes of the photographs. Unspecific directions in the methods section could have led to different subjects being examined as in panels B, C, and D. Since there was no specifications of the angle the pictures should be taken at, or the distance from the subject this could account for the differences in those features.
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