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Understanding Power Consumption of Olympus E-1: Key Components and Effective Battery Use

This article explores the various components contributing to the power consumption of the Olympus E-1 camera, including the imager, compression ASIC, DSP, memory management, and more. It details methods for maximizing the number of pictures per battery charge and offers suggestions for measuring power usage, including using external power supplies. Key features such as manual operation, various quality output choices, and standby power options are discussed to help photographers optimize their camera's performance and efficiency.

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Understanding Power Consumption of Olympus E-1: Key Components and Effective Battery Use

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Presentation Transcript

  1. Estimating Power Consumption:Olympus E-1 Scott Kirkpatrick

  2. Where does the power go? • Major components • Imager (analog + A2D), compression asic, DSP, memory and memory management, USB • LCD for viewing pictures, histogram, etc. • Lens controls – autofocus, autoexposure • Shutter • Startup stuff – e.g., the dust-buster • Controls available to the photographer • Manual operation • Use of standby power-down • The “half-press” • Choice of Tif, RAW, JPG and quality level of output • Emphasise maximizing the number of pictures per battery charge

  3. How to measure this • Use a computerized external power supply • Operate with battery out of camera • (does this make it operate differently • For example, it won’t go into standby state • Fix voltage at 9V, monitor current used on a PC through GPIB card, connection to power supply

  4. Startup, half-press, shutdown (AE,AF)

  5. Startup, focus, shutdown (MF)

  6. Taking and saving picturesof various sizes From left: TIFF, SHQ, HQ, SQ, Raw file

  7. Focusing my heaviest lens (200 mm)

  8. Effect of most available controls • Matter less than the basic cost of operation • Battery is 1.5 A-hr (4X what a cellphone has). This covers 7.5 hr of operation with no pictures taken. Basic cost of operation is 0.2 A. • Taking a picture, focusing the lens, momentarily increases workload to .25 or .3 A. Still 5 to 7.5 hrs of operation.

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