Those settings appear to be just parameters for the system, it's telling the camera (in auto or aperture priority mode)(with auto FP enabled) to use up to a 1/320 speed.
Read This: Nikon CLS Practical Guide: 10. Auto FP High Speed Sync Explained
Andrew Rodgers
Perfected Perspectives -- Photography by Andrew Rodgers | Andrew Rodgers (acedrew) on Twitter | Login | Facebook
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Canon 50D 24mm, 50mm, 100-400mm, 28-135mm
Panasonic Lumix TZ-3 Yeah, I have optical image stabilization and a 10X lens, it also fits in my pocket.
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