645 SMC-A 135 LS

rodneysan · 02-26-2010, 12:25 AM

I just picked this lens up. The optics and body are immaculate. But I noticed when I cock the leaf shutter, there is a springy resistance that I don't feel on a large format camera shutter. Is this normal?

D W · 02-26-2010, 07:08 AM

Yes there is more of a resistance when you turn the shutter cocking ring. It is stronger than the feel of the lever.
It could be due to the coking action of turning a ring vs pushing/pulling a lever and the mechanisms use to trigger the shutter which are connected to the aperture stop down lever

rodneysan · 02-26-2010, 09:25 AM

That makes sense. It seemed inconsistent to me that something would be broken without any outward signs of damage or abuse.

You've allowed me to sleep easier now. Thank you!

D W · 03-02-2010, 08:11 AM

Good night! Sleep tight!

02-26-2010, 12:25 AM	#1
rodneysan New Member Join Date: Feb 2010 Location: San Francisco, CA Posts: 23	645 SMC-A 135 LS I just picked this lens up. The optics and body are immaculate. But I noticed when I cock the leaf shutter, there is a springy resistance that I don't feel on a large format camera shutter. Is this normal?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale - Sold: SMC 85mm f/2.2 Soft, SMC-M 50mm f/4 Macro, SMC-M 135 3.5, SMC-M 85mm 2, SMC-M	jgmankos	Sold Items	3	06-14-2010 06:48 PM
LS A 645 75 and 135 lenses	Matus	Pentax Medium Format	6	05-06-2010 02:27 PM

02-26-2010, 07:08 AM	#2
D W Veteran Member Join Date: Mar 2008 Location: Hogtown, ON, Canada Posts: 329	Yes there is more of a resistance when you turn the shutter cocking ring. It is stronger than the feel of the lever. It could be due to the coking action of turning a ring vs pushing/pulling a lever and the mechanisms use to trigger the shutter which are connected to the aperture stop down lever

02-26-2010, 09:25 AM	#3
rodneysan New Member Join Date: Feb 2010 Location: San Francisco, CA Posts: 23 Original Poster	That makes sense. It seemed inconsistent to me that something would be broken without any outward signs of damage or abuse. You've allowed me to sleep easier now. Thank you!

03-02-2010, 08:11 AM	#4
D W Veteran Member Join Date: Mar 2008 Location: Hogtown, ON, Canada Posts: 329	Good night! Sleep tight!

Thread Tools	Search this Thread
	Search this Thread: Advanced Search