Introduction
Thank you for choosing Vello and congratulations on
your new BG-S1 battery grip purchase. Enjoy the many
benefits that a battery grip offers, such as extended
shooting time and more control and comfort when
shooting in a vertical (portrait) orientation.
The Vello BG-S1 is compatible with the Sony Alpha
SLT-A77, A77 II, and A99 II DSLR cameras. The BG-S1
accepts two Sony NP-FM500H rechargeable batteries.
The BG-S1 is equipped with an alternate shutter-
release button, AF start button, smart teleconverter/
focus magnifier, Fn/image rotation, AEL/slow sync/image
index, AF/MF/enlarge, and exposure compensation
buttons, a Multi selector, and a main dial for shooting in
a vertical position.
Please read through this entire manual before using
the BG-S1 battery grip.
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