rture’s periphery and thereby ex- and also the bulb lever and is unlocked by a second the plate and underexpose others. When the speeds action of the release mechanism. Slow, instantaneous, posing the corners of the plate more than the center. are higher than 1/150 of a second, the imperfect illum-… … value for portrait of the slit, higher or Exposure :7o5 seconds; f. 5 and landscape stud- lower speeds are ob- ies, when instead of tained. Because the a sharp-cut effect a plate is exposed by speeds, large plates, and wide-angle lenses. Because nniform softness is desired. Objects quite indistinct…
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