fw1 Posted September 27, 1999 Share Posted September 27, 1999 I have an older version of the Nikkor 300mm f/9, which has a switch which can toggle between "X" and "M". What is the meaning of the settings - I assume they are to do with flash sync?, and what is the correct setting for normal daylight photography? Does the setting affect the shutter speed in any way? Link to comment Share on other sites More sharing options...
pat_j._krentz_29_palms__ca Posted September 27, 1999 Share Posted September 27, 1999 X is for electronic flash, M is for flash bulbs. Pat Link to comment Share on other sites More sharing options...
tony_brent Posted October 1, 1999 Share Posted October 1, 1999 To amplify a bit more, X sync, as mentioned, is for electronic flash. The flash is fired when the shutter blades are all the way open. M sync first fires the flash bulb, and lets it reach its maximum brightness, then about 20 milliseconds later opens the shutter. Link to comment Share on other sites More sharing options...
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