Using on-camera Flash Yongnuo 568EX II and Focus point and recompose question

I have a question with regards to using my new Yongnuo 568EX II Flash on my Canon T4i which has E-TTL II. I'm new to flash photography and am looking for some help.

I use my center focus point when I shoot and recompose my shot most of the time. I press the shutter half way to lock exposure/focus and recompose; If I use this method when using ETTL is the flash going to use my original subject exposure settings or is it going to recalculate with a preflash?

The reason for asking is that when I take a picture of 2 subjects standing apart I will put my center focus point on the face of one and recompose , that now puts my center point between the subjects pointing out into oblivion, I do not want my flash exposing for that. Does the ETTL II in my T4i allow me to use my center focus point, recompose and then still get the proper flash. Also, should I be using evaluative mode of spot metering mode.

Thanks

I don't have that flash, so can't say...maybe ask in the "Small Flash and Studio Lighting" section?:

https://photography-on-the.net/forum/forumdis​play.php?f=35

cc1995 wrote in post #16530023
I have a question with regards to using my new Yongnuo 568EX II Flash on my Canon T4i which has E-TTL II. I'm new to flash photography and am looking for some help.

I use my center focus point when I shoot and recompose my shot most of the time. I press the shutter half way to lock exposure/focus and recompose; If I use this method when using ETTL is the flash going to use my original subject exposure settings or is it going to recalculate with a preflash?

The reason for asking is that when I take a picture of 2 subjects standing apart I will put my center focus point on the face of one and recompose , that now puts my center point between the subjects pointing out into oblivion, I do not want my flash exposing for that. Does the ETTL II in my T4i allow me to use my center focus point, recompose and then still get the proper flash. Also, should I be using evaluative mode of spot metering mode.

Thanks

I would say yes to both (the flash only 'calculates' when it fires the preflash with the shutter fully depressed) but I agree with the previous poster, you're better off asking in the flash section

Thanks guys. I'll post there. Didn't even see that section.

Look at these videos, particularly "ETTL II metering". It explains the difference between ETTL and ETTL II. ETTL is focus point linked and ETTL II is not. This of course has nothing to do with your flash. ETTL or ETTL II is based on the vintage of the camera.

http://cpn.canon-europe.com …asterclass/cano​n_flash.do

If your Canon T4i allows for back button focusing you might want to give it a try. I'm another focus/recompose shooter and love the clear separation of functions in all settings.

AZGeorge wrote in post #16534101
If your Canon T4i allows for back button focusing you might want to give it a try. I'm another focus/recompose shooter and love the clear separation of functions in all settings.

This, if you are doing focus recompose learn how to use back button focusing and you will find it much easier after a short learning curve.

Even when using BBF, it (ETTL) still meters based off the pre-flash.

I'm going to try the BBF. It seems like it has many benefits from what I have read. Thanks for the helpful answers everyone.