ADI or TTL (and HSS)

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GoNz0

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As a newbie who did not find searching for ADI and TTL resulting in the answer I have created a thread, I have a Sony a450 and HVL-F42AM flash.

whats better for general use, ADI or pre flash TTL and do i have HSS set on or off while the flash is pointing forward ?

TIA.
 
ADI is part of Sony's auto-TTL flash system, rather than a separate mode (I think) - 'auto distance integration' or something like that, helps to make the flash exposure more reliable.

HSS is High Speed Sync which allows you to use flash at shutter speeds above the normal x-sync max - 1/160sec on the a450 - which is a separate issue. Another guess here, but with some cameras you can leave HSS switched on permanently and the camera enables it automatically when the shutter speed needs to go above x-sync, and then automatically disables it when not needed.

I would use the full auto mode, with pre-flash, which is generally the best option by far. If necessary, adjust the exposure level by checking the LCD/histogram/blinkies and moderate with the compensation controls. See handbook - I don't know how Sony does this and they're all a bit different with flash management.
 
so stick with ADI over the pre ttl then ?
 
GoNz0 said:
so stick with ADI over the pre ttl then ?
Click to expand...

As I said above, I thought ADI was part of the pre-flashing TTL auto mode, not a separate function.

Not familar with Sony but whatever the options are, "pre TTL" or whatever you're calling it is the one to go for - the full auto TTL flash option.
 
yes i now understand ADI is the way to go, i read the manual a little to fast to take it in the 1st time :)
 
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