Abstract

For a number of typical outdoor photographic scenes on cloudless days, a statistical study has been made of logarithmic brightnesses and of differences of log brightnesses on adjacent pieces of fine detail, as they would be seen by a representative camera. Values were obtained photographically on Super XX film and also by means of a photoelectric telephotometer corrected to Super XX spectral response. The results do not disagree seriously with accepted values for the photographic brightness range. However the uncertainty in the meaning of “brightness range” is illustrated and a definition is proposed for a “99% range.” For difference of log brightness on fine detail, low values are found to predominate, with two-thirds of the differences below the average value of 0.15.

© 1959 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Brightnesses of Fine Detail in Air Photography*

P. D. Carman and R. A. F. Carruthers
J. Opt. Soc. Am. 41(5) 305-310 (1951)

The Brightness Scale of Exterior Scenes and the Computation of Correct Photographic Exposure*

Loyd A. Jones and H. R. Condit
J. Opt. Soc. Am. 31(11) 651-678 (1941)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription