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<blockquote data-quote="WayneF" data-source="post: 221462" data-attributes="member: 12496">Fantastic, the experience can only be helpful.Yes, SB-400 and SB-700 are TTL BL by default.&nbsp;&nbsp; Selecting Spot Metering mode is what switches them to TTL mode (flash systems dont ever do actual Spot metering on the flash).I'd choose Center metering.&nbsp; With all those lights everywhere, Matrix can only try to take them into account, and do something dumb.&nbsp; Center is probably where your important subject is.You did not actually say what the shutter speed and aperture was?&nbsp; That is what is important.&nbsp; It is rhetoric to me, but you ought to always know.&nbsp; <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" />Slow Sync seems debatable.&nbsp; It allows the shutter speed that the dim ambient actually meters, and bypasses the 1/60 second Minimum Shutter Speed With Flash that would otherwise kick in.&nbsp; &nbsp;&nbsp; However, 1) like Christmas tree lights, you probably need slow shutter to capture the lights well enough, and 2) any Scene mode probably ignores much of that and does its own thing.SB-400 will always be TTL-BL unless set to Spot metering.</blockquote>

[QUOTE="WayneF, post: 221462, member: 12496"] Fantastic, the experience can only be helpful. Yes, SB-400 and SB-700 are TTL BL by default. Selecting Spot Metering mode is what switches them to TTL mode (flash systems dont ever do actual Spot metering on the flash). I'd choose Center metering. With all those lights everywhere, Matrix can only try to take them into account, and do something dumb. Center is probably where your important subject is. You did not actually say what the shutter speed and aperture was? That is what is important. It is rhetoric to me, but you ought to always know. :) Slow Sync seems debatable. It allows the shutter speed that the dim ambient actually meters, and bypasses the 1/60 second Minimum Shutter Speed With Flash that would otherwise kick in. However, 1) like Christmas tree lights, you probably need slow shutter to capture the lights well enough, and 2) any Scene mode probably ignores much of that and does its own thing. SB-400 will always be TTL-BL unless set to Spot metering. [/QUOTE]

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