k-r lock up under specific condition

Michael Piziak · 04-14-2014, 07:13 PM

Hi,

I have 3 lenses, two of them are digital and no problem. However, with my manual Asahi Pentax Macro F4 100mm lens it will lock up sometimes under this condition: I push the green button to get the camera to set the shutter speed and 'sometimes' it makes a double mirror flap sound and 'sometimes' after that when I push the button to take a photo it will simply lock the mirror up.

I can put my ear up to the camera and hear a faint sizzling noise inside. The only way to get the camera back is to take the battery out and put it back in - then immediately the camera releases the mirror back down.

My camera is out of warranty and I don't think it's economical to have it repaired. As long as it only does this occasionally I can live with it, but I do wonder what it is about the manual lens that causes this.

Additional info: firmware is up to date. Occurs with both my lithium batteries - haven't tried AA batteries. I have considered just manually selecting my shutter speed to completely avoid this.

Last edited by Michael Piziak; 04-14-2014 at 07:18 PM.

leamlr · 04-17-2014, 01:32 PM

The same happens to me a 50mm 1.4f. my goal is metallic body and I think that might make connection with pins. Yours is also metal? to see if anyone can help. Once "hooked" every time I give to shoot up and down the mirror without photography, sometimes even freezes up and down constantly.

d1pr3d · 04-29-2014, 11:27 PM - **1 Like**

stop using lens causing this, you will kill your camera. read my comment on this thread https://www.pentaxforums.com/forums/116-pentax-k-r/245179-mirror-flop-shutter...ibrations.html

Michael Piziak · 05-01-2014, 05:28 PM

Originally posted by leamlr

The same happens to me a 50mm 1.4f. my goal is metallic body and I think that might make connection with pins. Yours is also metal? to see if anyone can help. Once "hooked" every time I give to shoot up and down the mirror without photography, sometimes even freezes up and down constantly.

What do you mean by "my goal is metallic body and I think that might make connection with pins." ?

04-14-2014, 07:13 PM	#1
Michael Piziak Closed Account Join Date: Dec 2013 Location: West Virginia Posts: 2,815	k-r lock up under specific condition Hi, I have 3 lenses, two of them are digital and no problem. However, with my manual Asahi Pentax Macro F4 100mm lens it will lock up sometimes under this condition: I push the green button to get the camera to set the shutter speed and 'sometimes' it makes a double mirror flap sound and 'sometimes' after that when I push the button to take a photo it will simply lock the mirror up. I can put my ear up to the camera and hear a faint sizzling noise inside. The only way to get the camera back is to take the battery out and put it back in - then immediately the camera releases the mirror back down. My camera is out of warranty and I don't think it's economical to have it repaired. As long as it only does this occasionally I can live with it, but I do wonder what it is about the manual lens that causes this. Additional info: firmware is up to date. Occurs with both my lithium batteries - haven't tried AA batteries. I have considered just manually selecting my shutter speed to completely avoid this. Last edited by Michael Piziak; 04-14-2014 at 07:18 PM.

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04-17-2014, 01:32 PM	#2
leamlr New Member Join Date: Apr 2014 Posts: 7	The same happens to me a 50mm 1.4f. my goal is metallic body and I think that might make connection with pins. Yours is also metal? to see if anyone can help. Once "hooked" every time I give to shoot up and down the mirror without photography, sometimes even freezes up and down constantly.

04-29-2014, 11:27 PM - 1 Like	#3
d1pr3d Junior Member Join Date: Apr 2013 Photos: Albums Posts: 38	stop using lens causing this, you will kill your camera. read my comment on this thread https://www.pentaxforums.com/forums/116-pentax-k-r/245179-mirror-flop-shutter...ibrations.html

05-01-2014, 05:28 PM	#4
Michael Piziak Closed Account Join Date: Dec 2013 Location: West Virginia Posts: 2,815 Original Poster	Originally posted by leamlr The same happens to me a 50mm 1.4f. my goal is metallic body and I think that might make connection with pins. Yours is also metal? to see if anyone can help. Once "hooked" every time I give to shoot up and down the mirror without photography, sometimes even freezes up and down constantly. What do you mean by "my goal is metallic body and I think that might make connection with pins." ?