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Flashes
OCF, Settings on flash and camera, etc. ???
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<blockquote data-quote="cwgrizz" data-source="post: 586042" data-attributes="member: 27017"><p>Thanks Charlie for your feedback. </p><p></p><p>Really, I am scratching my head which now has more cleared areas than it has hair. Ha!</p><p></p><p>If the camera is set to CMD mode for the built in flash, the options that exist are:</p><p>1. Set to -- means that it will send a signal to the OCF but it will be very, very low power.</p><p>2. Set to M the built in flash power can be changed and still trigger the OCF (Optically)</p><p>3. Set to TTL the built in flash's power will be adjust according to what the camera reads for exposure and will trigger the OCF (Optically)</p><p></p><p>Group A</p><p>1. Set to -- means any OCF set to Grp A will not be fired</p><p>2. Set to M means that the OCF will...................... I'm not sure but I assumed it would vary the power on the OCF by what ever was set on the camera ie 1/1 - 1/128</p><p>3. Set to TTL means that the OCF will have the power adjusted by what the camera decides needs to be done exposure wise</p><p></p><p>Group B--Ditto to Group A only the flashes set to Grp B will be the ones affected.</p><p></p><p>Now for the flash.</p><p>If the mode is set on the OCF to iTTL, (matching the group A or B) then when the camera also set to TTL for Group A, it will flash with the power determined by the camera.</p><p>If the mode is set on the OCF to Sn1 or Sn2 does the camera settings ever change the power output of the flash or is it all done at the flash?</p><p></p><p></p><p>I'm trying to get this straight because the shot that I submitted in the weekly challenge, Leaves, was a disaster using the flash. Nothing seemed to increase the power much. I ended up using an LED work light and light from a dining room over the table light to get what I was looking for.</p><p></p><p>I hope this gives some better insight into my confusion. Ha!</p></blockquote><p></p>
[QUOTE="cwgrizz, post: 586042, member: 27017"] Thanks Charlie for your feedback. Really, I am scratching my head which now has more cleared areas than it has hair. Ha! If the camera is set to CMD mode for the built in flash, the options that exist are: 1. Set to -- means that it will send a signal to the OCF but it will be very, very low power. 2. Set to M the built in flash power can be changed and still trigger the OCF (Optically) 3. Set to TTL the built in flash's power will be adjust according to what the camera reads for exposure and will trigger the OCF (Optically) Group A 1. Set to -- means any OCF set to Grp A will not be fired 2. Set to M means that the OCF will...................... I'm not sure but I assumed it would vary the power on the OCF by what ever was set on the camera ie 1/1 - 1/128 3. Set to TTL means that the OCF will have the power adjusted by what the camera decides needs to be done exposure wise Group B--Ditto to Group A only the flashes set to Grp B will be the ones affected. Now for the flash. If the mode is set on the OCF to iTTL, (matching the group A or B) then when the camera also set to TTL for Group A, it will flash with the power determined by the camera. If the mode is set on the OCF to Sn1 or Sn2 does the camera settings ever change the power output of the flash or is it all done at the flash? I'm trying to get this straight because the shot that I submitted in the weekly challenge, Leaves, was a disaster using the flash. Nothing seemed to increase the power much. I ended up using an LED work light and light from a dining room over the table light to get what I was looking for. I hope this gives some better insight into my confusion. Ha! [/QUOTE]
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OCF, Settings on flash and camera, etc. ???
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