I've decided I want to get into photography and purchased a G1X as my first camera. I'm a bit unsure however of how exactly the on-camera flash works and how E-TTL works in general.
I realise that without CHDK the camera is limited to manual flash in manual mode and that E-TTL works by default on all other modes.
Hopefully somebody may be able to clear up a few uncertainties that I have.
- Does E-TTL only affect the flash power? For instance will it increase theif the flash is unable to output enough power. Basically I want to know if by using ETTL its going to mess with the either I have determined or the camera has determined without flash being on.
- I notice that generally theis limited to 1/60 second when the flash is open in Av and other mode, however in Tv and M I can lower this even further. Is this due to the sync speed of the flash? If so what are the downfalls of using quicker speeds?
- When using manual flash mode in manualmode the flash is adjusted through power, rather than flash compensation. If i expose the photo for the background (leaving the foreground underexposed) and then open the flash the entire photo lowers in . I can see a jump in the on the right. Why is this happening and is it normal for manual flash mode? Its rather annoying if Im trying to expose for a particular part of the photo and rasing the flash changes the reading. Usually in manual mode I set the with the flash down and then open it up and adjust the power for the foreground .
Cheers in advance for any help.