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<blockquote data-quote="Revet" data-source="post: 416041" data-attributes="member: 17612">Thanks for the very clear response and sorry about mixing up the Nikon and Canon on the E4 option.&nbsp; It seems you were able to follow my reasoning without confusion.&nbsp; After I posted the above thread, I went back and looked at my camera settings when I was playing with Camera P mode.&nbsp; I realized then that the camera was not considering any ambient at all as you suggest because I was indoors at night in low light (there just was no ambient at the settings it was using).&nbsp; I will try it outdoors (as soon as I get some Sun in Cleveland) so I can try shooting someone in shade or with a bright background behind them so I will need some fill flash.&nbsp; That might take until April!!!&nbsp;&nbsp; It sounds like I need to practice that with the new camera anyhow to see how EC and FC changes affect the overall exposure using camera P mode with TTL-BL flash.At the same time, I also figured out that the camera must be adjusting Flash levels to keep the flash level constant when Aperture is changed thus allowing a change in ambient in Camera S mode without changing the effective Flash output.&nbsp; Thinking it out for myself I hope provides long term retention so thanks for putting my brain into gear (not always easy for me outside of work!!!)</blockquote>

[QUOTE="Revet, post: 416041, member: 17612"] Thanks for the very clear response and sorry about mixing up the Nikon and Canon on the E4 option. It seems you were able to follow my reasoning without confusion. After I posted the above thread, I went back and looked at my camera settings when I was playing with Camera P mode. I realized then that the camera was not considering any ambient at all as you suggest because I was indoors at night in low light (there just was no ambient at the settings it was using). I will try it outdoors (as soon as I get some Sun in Cleveland) so I can try shooting someone in shade or with a bright background behind them so I will need some fill flash. That might take until April!!! It sounds like I need to practice that with the new camera anyhow to see how EC and FC changes affect the overall exposure using camera P mode with TTL-BL flash. At the same time, I also figured out that the camera must be adjusting Flash levels to keep the flash level constant when Aperture is changed thus allowing a change in ambient in Camera S mode without changing the effective Flash output. Thinking it out for myself I hope provides long term retention so thanks for putting my brain into gear (not always easy for me outside of work!!!) [/QUOTE]

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