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08-04-2013, 11:51 AM   #1
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X-Sync on KM (not K-M)

Super basic probably dumb question: I have a KM film SLR. The X-sync for this camera is 1/60 sec, but can I use slower speeds for flash, or does the X-sync only fire at 1/60?

08-04-2013, 12:06 PM   #2
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All manual mode Pentax will fire the flash at all speeds and not just at the designated sync speed.
08-04-2013, 05:44 PM   #3
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QuoteOriginally posted by LesDMess Quote
All manual mode Pentax will fire the flash at all speeds and not just at the designated sync speed.
...but you should shoot at 1/60s or slower if you want the full frame to be exposed.


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08-04-2013, 06:48 PM   #4
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Any faster than 1/60 and the second shutter curtain is starting to close, which means that when the flash fires, not all the film will be exposed. As for slower speeds, they will work, but in the end it is the speed of the flash that freezes the picture.

08-05-2013, 07:25 AM   #5
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Yes you can use any speed below 60.

If you use speeds above 60 you will get 1/2 frame exposed or less....
08-05-2013, 11:16 AM   #6
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Yep, just checking, I wanted to be sure I could go to slower speeds without trouble.
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