BTZS ExpoDev 1.1.7

BTZS ExpoDev is the companion app for BTZS Plotter for Windows, designed to enhance the precision of exposing traditional B&W films by utilizing film test data from BTZS film tests.

"BTZS meets the iPhone. It's the perfect match of Phil Davis' BTZS with the same device that the rest of my life is on." - Robert Levittan

"It has liberated me from having to worry about my negatives, so that I can direct my attention to the important process of making a photograph." - Laura Campbell

"Liberation for the traditional film photographer." - Bill Waldron

BTZS ExpoDev represents the latest iteration of ExpoDev tailored for Apple iOS devices. This application empowers users to employ their BTZS test Film Profiles for precise B&W film exposures in real-world settings, leading to consistently exposed negatives conducive to darkroom printing. ExpoDev caters to large-format film photographers engaged in conventional or alternative processes, including hybrid methodologies like film scanning.

Key features of BTZS ExpoDev include:

• An exposure record-keeping system for monitoring all film exposures, facilitating easy review of exposure specifics and subsequent development requirements upon returning from the field.
• List management capabilities for Film Profiles, lenses, and filters, streamlining selections during exposure sessions.
• Support for both BZTS Incident and traditional Zone System metering methods.
• Interactive calculation of SBR, Average Gradient, and EFS per scene during metering.
• Customizable filter factors and Large Format bellows extension compensation.
• A robust Depth of Field calculator with adjustable Circle of Confusion supporting 3 DOF calculation modes.
• Metric and imperial measurement modes in the DOF calculator.
• Exposure calculation flexibility between Aperture or Shutter speed selection.
• Extensive range support: Apertures down to f/2048 and Shutter speeds up to 6 hours.
• An integrated exposure timer capable of managing exposures up to 12 hours.
• Sophisticated reciprocity failure adjustments based on lab-produced data for over 90 film and developer combinations.

Note: Sample Film Profiles are accessible for experimentation purposes, although they do not serve as a substitute for personalized film testing.