SC-29

[randy_kayle]

<p>I use CLS and mutible lighting successfully, with my D90, and Sb-800, and Sb-600.</p>

<p>With a SC-29 Extension cable, and the SB-800 pointed into the umbrella, and the focus assit on the camera to the subject, will the exposure be correct with ITTL?</p>

<p>It works wirelesly was wondering if it will work with the SC-29 extension?</p>

[lornesunley]

<p>Yes, it will</p>

[randy_kayle]

<p>Dose the flash and the sc-29 have to be at the camera distance to subject for correct exposeure?</p>

[lornesunley]

<p>No, CLS calculates the proper exposure from what the camera sees of the pre-flash put out by the flash units. The focus assist light on the sc-29 cable has nothing to do with the exposure calculations done by the camera.</p>

[randy_kayle]

<p>I thought the Extension SC-29 was an extension of the hot shoe on the camera.</p>

<p>If the camera is 10 feet from the subject, and you have the sc-29 and sb-800 4 feet on a tripod from the subject, it will ittl corect?</p>

[lornesunley]

<p>Yes, the sc-29 is an extension of the hot shoe. When you have the flash in iTTL mode, exposure is calculated by the camera when it sees the pre-flash from the SB-800. The flash is given instructions on what power level to use based on the pre-flash exposure calculation. The same thing happens when the flash is set off through remote CLS commands using iTTL.</p>

[randy_kayle]

<p>Thank you for your responses..</p>