LS lens to Pentax digital body.

rlatjsrud · 04-27-2016, 06:10 PM

Does anyone using any medium format LS lens to Pentax or other digital body? I'm thinking to buy the adapter from 67 to K mount for using the LS lens in order to sync more than 1/250.

**pentaxus** · 04-27-2016, 09:02 PM

I have used the Pentax leaf shutter lenses (67 and 645) on the film 645. You have to set the focal plane shutter at 1/8 of a second. The mechanism that stops the lens down also fires the shutter. The 67 to K mount adapter does not have a mechanism to close down the aperture so it can't be used for leaf shutter use.

04-27-2016, 06:10 PM	#1
rlatjsrud Guest	LS lens to Pentax digital body. Does anyone using any medium format LS lens to Pentax or other digital body? I'm thinking to buy the adapter from 67 to K mount for using the LS lens in order to sync more than 1/250.

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04-27-2016, 09:02 PM	#2
pentaxus Site Supporter Join Date: Jun 2010 Location: Central Coast, CA Posts: 1,320	I have used the Pentax leaf shutter lenses (67 and 645) on the film 645. You have to set the focal plane shutter at 1/8 of a second. The mechanism that stops the lens down also fires the shutter. The 67 to K mount adapter does not have a mechanism to close down the aperture so it can't be used for leaf shutter use.