Reply to thread

Message

<blockquote data-quote="paul_b" data-source="post: 376435" data-attributes="member: 15676">Can 2 AF assist lamps be used at the same time? (on camera &amp; off camera ext' flash)HiI have a Nikon D3100. I am going to use an external flash (Yongnuo YN468-ii). I have also bought a Yongnuo wireless i-ttl flash trigger transceiver (YN-622N). I have yet to unbox the wireless transceiver or external flash.My plan is to use the external flash wirelessly (any advice on which camera and flash settings to use would be great too).My question is this: The D3100 has a built in AF assist lamp (white light I think). I assume the external flash has an AF assist lamp too (&amp; I assume it must be infrared). Can the 2 AF assist lamps be used together at the same time? Do they simply increase illumination to help the auto focus system or is there some kind of critical distance being measured by the beams themselves and thus they will interfere with each others measurement (ie do the beams measure distance by calculating how long it takes the beam to reflect back off the subject back to the source)?Any advice on the subject would be great as it something I know nothing about. Thanks</blockquote>

[QUOTE="paul_b, post: 376435, member: 15676"] [b]Can 2 AF assist lamps be used at the same time? (on camera & off camera ext' flash)[/b] Hi I have a Nikon D3100. I am going to use an external flash (Yongnuo YN468-ii). I have also bought a Yongnuo wireless i-ttl flash trigger transceiver (YN-622N). I have yet to unbox the wireless transceiver or external flash. My plan is to use the external flash wirelessly (any advice on which camera and flash settings to use would be great too). My question is this: The D3100 has a built in AF assist lamp (white light I think). I assume the external flash has an AF assist lamp too (& I assume it must be infrared). Can the 2 AF assist lamps be used together at the same time? Do they simply increase illumination to help the auto focus system or is there some kind of critical distance being measured by the beams themselves and thus they will interfere with each others measurement (ie do the beams measure distance by calculating how long it takes the beam to reflect back off the subject back to the source)? Any advice on the subject would be great as it something I know nothing about. Thanks [/QUOTE]

Verification