Image Enlargement Limits
The practical amount of enlargement (irrespective of the enlarger structure) will depend upon the grain size of the negative, the sharpness (accuracy) of both the camera and projector lenses, blur in the image due to subject motion and camera shake during the exposure, and the intended viewing distance of the final product.
For example, a 5 by 7 inch print intended for viewing in a scrapbook at 18 inches may be unsuitable for enlargement as an 8 by 10 inch print to be hung on a hallway wall to be viewed at the same distance, but usable at a larger 5 by 7 feet (twelve times larger) on a billboard to be viewed no closer than eighteen feet (twelve times more distant).
Read more about this topic: Enlarger
Famous quotes containing the words image, enlargement and/or limits:
“The brawling of a sparrow in the eaves,
The brilliant moon and all the milky sky,
And all that famous harmony of leaves,
Had blotted out man’s image and his cry.”
—William Butler Yeats (1865–1939)
“... when I exclaim against novels, I mean when contrasted with those works which exercise the understanding and regulate the imagination.—For any kind of reading I think better than leaving a blank still a blank, because the mind must receive a degree of enlargement and obtain a little strength by a slight exertion of its thinking powers ...”
—Mary Wollstonecraft (1759–1797)
“This teaching is not practical in the sense in which the New Testament is. It is not always sound sense in practice. The Brahman never proposes courageously to assault evil, but patiently to starve it out. His active faculties are paralyzed by the idea of caste, of impassable limits of destiny and the tyranny of time.”
—Henry David Thoreau (1817–1862)