Question about FP flash mode

[Pradipta Dutta]

DCSteve wrote:
So then how do I set the shutter speed to faster than 1/250 in FP
mode? The manual is unclear.

You change the shutter speed the same way on the camera. As a matter of fact unless your camera is set to Auto FP, you will not be able to set a shutter speed higher than 1/250. However, as you change the camera to Auto FP, that constraint is lifted and you are now allowed to set any shutterspeed on the camera.

--
Speed is significant and interesting but accuracy is downright fascinating
http://www.pbase.com/pradipta

 

[Norwen]

wondering why does the flash then
continues to say "FP"?

I think it's just a matter of being on the safe side and telling you "you can" go further up if you wish... I think it's a great idea to continue to show FP, even if one is at 250 or below.

 

[jean bernier]

--
Jean Bernier

All photographs are only more or less credible illusions

 

[Duncan C]

In addition to reducing the guide number, High speed (FP) sync also isn't nearly as good as regular sync at freezing fast motion. It isn't normally an issue, but with some times of photography it is.

Here is a link showing examples:

http://webs.lanset.com/rcochran/flash/hss.html
--
dpreview and PBase supporter.



http://www.pbase.com/duncanc

 

[Thom Hogan]

Actually, the light loss is much more than the 100% I had
carelessly thrown in.

Actually, if you lost 100% of the light, you'd have NO light.

FP cuts the Speedlight down to about 1/8 power as the max. A GN of 100 would be cut to about 36. Maximum distance is therefore going to be about (((FULL_GN_DISTANCE / 1.4) / 1.4) / 1.4).

--
Thom Hogan
author, Nikon Field Guide & Nikon Flash Guide
editor, Nikon DSLR Report
author, Complete Guides: D50, D70, D100, D1 series, D2h, D2x, S2 Pro
http://www.bythom.com

 

[seany]

--Tom is it your opinion that apart from the reduced distance and power at auto fp there is no detramental consequences to the sb800 by keeping the camera permantly set to auto fp?
seany