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<blockquote data-quote="WayneF" data-source="post: 126498" data-attributes="member: 12496">No, the strobes simply flash or provide modeling lights, there is no extra mechanism for focus.&nbsp;&nbsp; Yours must be some unusual situation, because the modeling lights are more than plenty for focusing with my Alienbees.&nbsp; No notion of a problem ever occurred to me.&nbsp; <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" />&nbsp;&nbsp; &nbsp;&nbsp; If ISO 100 or 200, and around f/8, and max shutter sync speed, the picture is black with 150 watt modeling lights alone (safe, no problem with them on).Are you sure it is not a focus sensor problem, not being aligned on the subject?If modeling light intensity is a real problem for focus (which frankly I can't imagine), you could put a speedlight in the hot shoe, aimed up at lowest possible power level, and its red focus assist light should be sufficient.&nbsp;&nbsp; It is even less light than the modeling light though?</blockquote>

[QUOTE="WayneF, post: 126498, member: 12496"] No, the strobes simply flash or provide modeling lights, there is no extra mechanism for focus. Yours must be some unusual situation, because the modeling lights are more than plenty for focusing with my Alienbees. No notion of a problem ever occurred to me. :) If ISO 100 or 200, and around f/8, and max shutter sync speed, the picture is black with 150 watt modeling lights alone (safe, no problem with them on). Are you sure it is not a focus sensor problem, not being aligned on the subject? If modeling light intensity is a real problem for focus (which frankly I can't imagine), you could put a speedlight in the hot shoe, aimed up at lowest possible power level, and its red focus assist light should be sufficient. It is even less light than the modeling light though? [/QUOTE]

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