Pentax Flash Settings

[wakaka90]

Hold the 'Light' button lets u access the Slave mode where u can set to SL1 or SL2.
But when you press the mode button, there is other to modes. one is PP(the other 1 i cant remember. What uses those 2 modes are?

btw i using 540FGZ

 

[VSonic06]

You mean P-TTL, M, A and SB?

M = you manually set the level of flash power output

A = 'auto' thyristor mode, doesn't communicate with the camera like P-TTL does, instead you set the ISO and aperture and the flash adjusts power output based on the scene brightness

SB = only use the AF assist lamp on the flash.

IMHO A-mode is more reliable. P-TTL tend to meter under by 1-2 stops especially when the flash gets reflected somewhere in the scene. Also there is no pre-flashing in A-mode so you don't get shots with sleepy half-closed eyes among people whose eyes are more sensitive.

 

[wakaka90]

PP
SL
PH

SL i know. slave mode, 1 is intelligent, 2 is optical slave mode.
whatabout PP and PH?

 

[VSonic06]

PP is only useful if you have the TR-3 external power pack

PH 1/2 enables/disables auto power off after x minutes

 

[wakaka90]

thanks for d reply.
Hows the PP setting affects d flash unit?