During these summers, he would conduct photographic experiments, working with different lenses, filters, and prisms in natural light.

Determination and recognition of processes operating to produce the lunar surface features also were among the objectives of this photographic experiment.

He adopted Duchenne's procedure of photographic experiments and also believed that it was possible to attain the "truth" through direct observation.

Some of Mr. Penn's photographic experiments on view are interesting but contrived.

He produced many portraits of the painter, and their relationship evolved into the realization of a work together, hundreds of images based on photographic experiments.

He launched into a series of creative photographic experiments in which he both manipulated and combined multiple images to create "new pictorial realities".

After retiring as a designer in the 1980s, he continued to make his own photographic experiments.

But aside from allowing a few photographic experiments, the justices show no willingness to respond.

The inspiration, albeit calculated, comes from the movement analysis and early photographic experiments of two pioneers with the same initials and the same life span (1830-1904).