Faster Flash Sync

**BigDave** · 06-12-2012, 07:12 PM

Originally posted by jogiba

My Pentax 67 90mm F2.8 LS lens has 1/500 sec sync.

See, they could do it if they REALLY wanted to!

regards,

Blue · 06-12-2012, 09:47 PM

Originally posted by BigDave

See, they could do it if they REALLY wanted to!

regards,

That particular 90mm lens has a leaf shutter built into it. That is what makes it possible on the 67. The native sync speed on the 67 is pretty damn slow at 1/30. In addition to the 90mm LS, there is a 165mm/4 LS that syncs to 1/500 due to its incorporated leaf shutter. There is also a 90/2.8 and 165/2.8 that don't have a leaf shutter.

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06-12-2012, 07:12 PM	#16
BigDave Site Supporter Join Date: Sep 2010 Location: Hudson Valley, NY Photos: Gallery \| Albums Posts: 2,626	Originally posted by jogiba My Pentax 67 90mm F2.8 LS lens has 1/500 sec sync. See, they could do it if they REALLY wanted to! regards,

06-12-2012, 09:47 PM	#17
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by BigDave See, they could do it if they REALLY wanted to! regards, That particular 90mm lens has a leaf shutter built into it. That is what makes it possible on the 67. The native sync speed on the 67 is pretty damn slow at 1/30. In addition to the 90mm LS, there is a 165mm/4 LS that syncs to 1/500 due to its incorporated leaf shutter. There is also a 90/2.8 and 165/2.8 that don't have a leaf shutter.