Burst rate
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Burst rate

The G9 is just a hair faster when using continuous autofocus – 20 fps with e-shutter / 9 fps mechanical shutter to the E-M1 II's 18 fps with e-shutter / 10 fps mechanical. But perhaps more impressive is the G9's near-infinite buffer depth: it will carry on shooting at 9 fps with mechanical shutter for over 600 frames. The E-M1 II is no slouch in terms of buffer depth, but we did find ourselves irritated with the camera locking us out of playback while the buffer cleared.

Both cameras also offer a very handy pre-recording burst shooting feature, which records full resolution JPEG and Raw frames captured before you fully push the shutter. Once you half-press the shutter, each camera begins saving images to its buffer, and will record a certain number once the shutter is fully pressed.

Olympus calls it Pro Capture mode, and it will record 14 pre-captured frames – but requires an Olympus Micro Four Thirds lens to be attached. Panasonic's mode is called Pre-Burst, and is separate from the 6K/4K pre-capture stills-from-video that's also available on the G9. It starts recording 0.4sec before the shutter's fully pressed, which means either 8 or 24 frames depending on your burst mode.

If you have a particular use case that demands a nearly bottomless buffer depth, we'd suggest leaning toward the G9. Otherwise, this category is basically a wash.