Inon D2000w and Heinrich Weikamp iTTL Converter

[wolf 0]

HI, I was wondering if anyone here has tried Flash Exposure Compensation with the above combination with a D200 camera. Do you compensate via the camera or the flash?

[mikedive 0]

Hi ,

in combination with the TTL Konverter your strobe is at TTL so you only may compensate via the camera or/and via the Konverter.

If you want to compensate via the Strobe you should change to manual mode by switching to rear curtain so no preflashes are triggert and the strobe is flashing with the adjusted power .

 

Mixing manual power and TTL form camera you will get also good results but only below -1 f stop the TTL cirquit is switched off and the strobe flashes twice ( pre and main flash with both 1/2 power -1f stop) and if the situation is matching with -1 f stop and the cam ist set to A or S mode, in M mode you will get problems.

 

The auto modus of the strobe is also useful in very low f-stop situations always based upon ISO100 the strobe will fire twice with both power set the same based on the view of the front sensor oft the strobe. so you will be able to shot F2 ISO 100 up to F11 if you want to get up to f16 you have to swith cam to a higher ISO level to match with the strobe power steps .

 

The next problem is, different strobes have different electronics some are quick some are slow I noticed a differenz between the old INON z220 and the new z240 the Z220 has a burntime of about 5500 my sec the Z240 only of about 3500 both triggert manualy full power ..... this is a problem for the TTL konverter cause the regulation is based on burntime ..... and additionaly the Z240 is adding more the duble of burntime as it is switched by the converter ......... So the Z240 has 2 Tubes seperately connected and the z220 tubes are connected in line ..... so the Z240 sucks the power out of the capacitator mouch faster then the z220 the summary Power ( watt/ sec ) is the same so the burning curve inside the converter could not match with both strobes.

 

Michael