Auto FP High-Speed Sync

What is Auto FP Speed Sync?

Auto FP High Speed Sync is a flash mode used for fill-flash photography under brightly lit conditions. It will fill in and open up shadowed areas in order to portray the greatest detail in subjects. It's also ideal when using wide aperture lenses, and because it allows fast shutter speeds—up to fastest shutter speeds on compatible Nikon D-SLRs—it is often used for action-stopping sports photography. And for portraits, you can open up your lenses to their full aperture in order to isolate your subject against a blurred background without overexposing the image.

When Auto FP High Speed Sync is selected, the flash will fire for the duration of the shutter curtain's travel, thus syncing with the camera's shutter speed when that speed is set higher than the camera's normal sync speed.

Flash sync speed

Congratulation!  You have bought the Nikon D5100 (recently); this was your first DSLR, you were really happy about the camera and the quality of the photographs. One day you noticed something about your camera, when you are into manual (M) or shutter priority (S) mode with a shutter speed more than (>) 200th of a second to capture a beautiful moment in bright day light which requires a flash. So you popup the on-camera flash and realized something going weird about your camera setting, the shutter speed comes down to 1/200 second. When you close down the flash the shutter speed goes back to >200th of a second.

Wondering? whats going wrong? Is there something wrong with the camera? 
The answer is know NO :)

The Nikon D5100 supports flash synchronization at up to 1/200s or slower.  The D5100 does not support Auto FP High Speed Sync, which means 1/200 is the highest sync speed officially supported. The built-in flash or an external speed light will sync only up to 1/200 second.

Is there a way to make the D5100 support Auto FP High Speed Sync flash? 
Again the answer is NO.

The Nikon D5100 is a camera targeted towards the budget-minded/amateur market also most of the users might not be troubled by lack of inbuilt control over this type of feature and as a result the Auto FP feature is missing.

Even with an external Auto FP compatible flash, such as the SB-600/700/800/900, the D5100 cannot perform Auto FP high speed flash sync.

You might have not noticed the below image when you have bought the D5100 camera.

Congratulations again :) You have improved your Photography skills. 

You have grown to next level.

Happy shooting!

Nikon D5100 Flash sync speed  Shutter Speed 1/200 D5100 200  Fastest Shutter Speed with Flash Nikon D5100  sync speed