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<blockquote data-quote="alaios" data-source="post: 580704" data-attributes="member: 41911">First of all I like your answers and thanks.I have spent a whole evening training and this is what I found.(My flash guns when mounted on camera they suppport TTL and TTL-BL flash, there is a mode button to switch over those. I do not know though if this &quot;holds&quot; in reality, i.e it was corrected implemented)When my flash guns work in remote mode, so camera's flash is the master and the other is remote it looks like that system supports only TTL and not TTL-BL (the display writes TTL).A. Now when I am with one flash (on body) and TTL mode the way to shoot fast and get the results I like (like here is defined flash lifting shadows and giving a slight pop where is not clear that flash was even used) is tobe at manual mode and pick an iso that underexposes the scenes around -1 stop and then set my camera flash to FEC -3.B. When I then use two flashes (one at the body as main fill and one at a light stick) the second light should be at -2 (with the camera flash at -3). For a reason I do not know is that my ISO has to be two full stops or bit more of what I had in scenario A, assuming same light. If I have no prior information for a scene I should go around -3 stops in iso scale.What I do not understand is the maths behind those combos that I have tested thoroughlyAlex</blockquote>

[QUOTE="alaios, post: 580704, member: 41911"] First of all I like your answers and thanks. I have spent a whole evening training and this is what I found. (My flash guns when mounted on camera they suppport TTL and TTL-BL flash, there is a mode button to switch over those. I do not know though if this "holds" in reality, i.e it was corrected implemented) When my flash guns work in remote mode, so camera's flash is the master and the other is remote it looks like that system supports only TTL and not TTL-BL (the display writes TTL). A. Now when I am with one flash (on body) and TTL mode the way to shoot fast and get the results I like (like here is defined flash lifting shadows and giving a slight pop where is not clear that flash was even used) is to be at manual mode and pick an iso that underexposes the scenes around -1 stop and then set my camera flash to FEC -3. B. When I then use two flashes (one at the body as main fill and one at a light stick) the second light should be at -2 (with the camera flash at -3). For a reason I do not know is that my ISO has to be two full stops or bit more of what I had in scenario A, assuming same light. If I have no prior information for a scene I should go around -3 stops in iso scale. What I do not understand is the maths behind those combos that I have tested thoroughly Alex [/QUOTE]

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