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p.1 #10 · EOS-3 frame adavnce and mirroor balckout with PB-E2 | |
the 8 batteries are conected into 2 parallel strings of 4 batteries in series. giving a higher poweroutput at the same voltage
Not sure this is true or not, but I don't think it has anything to do with how the PB-E2 increases the film advance rate.
The PB-E2 incorporates an additional motor and gear train which take over some of the work from the camera's built-in motors, which allows each function (mirror cocking, shutter priming, and film advance) to operate faster.
Without the PB-E2, the camera has one small motor that performs the film rewind, shutter priming, and mirror cocking functions. When the PB-E2 is attached, its motor takes over the shutter and mirror operations, speeding up these operations, while the low-speed planetary gear set in the booster increases the camera's film advance rate from 4.3 FPS to 6 FPS with the 8xAA battery pack.
Installing the NP-E2 battery pack switches the booster from the low-speed gear to the high-speed gear, which boostes film advance to 7 FPS.
It's all explained in the sales brochure for the EOS 3.
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