Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Light metering system with user reference preselection capability










Image Number 2 for United States Patent #4751542.

A light metering system which allows the user to select a color or gray scale reference for the system prior to operation of the apparatus (e.g. camera) with which the light metering system functions. The preselected reference chosen by the user takes into account values which will be recorded on an image recording element by the apparatus. The system is to be used on apparatus where shutter speed and diaphragm aperture settings are determined on the basis of the luminous power of the subject to be photographed taking into account the behavior of an element (e.g. film) on which the image is to be reproduced. The system includes a color selector mechanically associated with a color scale which, in turn, is directly related to a gray scale having a light intensity indicator. The light indicator is connected to a diaphragm aperture control device and to a shutter speed selector mechanism. The output of a light response curve selector of the element on which the image is to be reproduced is also connected to the diaphragm aperture control device. A preferred form of the diaphragm aperture control device is a microprocessor.








 
 
  Recently Added Patents
Wound dressing with a discontinuous contact layer surface
Tri-material dual-species neutron spectrometer
Method to prevent hyper frame number de-synchronization in a wireless communication system
System for alarming upon occurrence of secession of smart key for vehicles
Apparatus and method for adapted deblocking filtering strength
Systems and methods for dynamically modifying subcriber service profile stored in home location register while roaming in wireless telecommunication networks
Method of generating integrated circuit model
  Randomly Featured Patents
Production of pellets and pellet-containing fertilizer composition
Coring blade for produce
Thermal printhead with heater element and nozzle sharing common plane of symmetry
Antenna
Acoustic transducer
Handle for container
Paper roll dispenser
Fluid injector with thermal load control
Motion data generation apparatus, motion data generation method, and motion data generation program storage medium
Method and apparatus for simplified access to online services