1 / 8

Estimating Power Consumption: Olympus E-1

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

lewis-glass
Download Presentation

Estimating Power Consumption: Olympus E-1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

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.

More Related