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ZombieArmy · 09-12-2019, 09:42 PM

Seems like the camera is trying to wake the dead whenever I change the aperture in M mode on a normal autofocus lens. I notice it seems to actually stop the lens down for focusing as well?

Anyone else experience this?

Tomorrow I'll try to get a sound recording of it, it's almost comical.

Last edited by ZombieArmy; 09-12-2019 at 09:47 PM.

hcc · 09-13-2019, 03:13 AM

Only in M mode?

With any lens, or only a few lens(s)?

I have never experience this and would be interested to read the discussion.

ZombieArmy · 09-13-2019, 03:17 AM

Originally posted by hcc

Only in M mode?

With any lens, or only a few lens(s)?

I have never experience this and would be interested to read the discussion.

Only in M mode, and it does it with any lens that changes the aperture in camera.

**rogerstg** · 09-13-2019, 05:26 AM

Originally posted by ZombieArmy

Anyone else experience this?

I just checked with a 55-300 plm. M Mode, dialed changes of aperture; no noticeable sound.

selfnoise · 09-13-2019, 06:44 AM

My KP periodically makes a clicking noise when changing aperture. This noise would not manifest on the above mentioned 55-300 PLM since that lens doesn't have a mechanical aperture lever.

In general the KP aperture motor appears to be somewhat noisy. There's a thread elsewhere in the forum IIRC about the startup sound it makes.

**luftfluss** · 09-13-2019, 07:57 AM

Originally posted by selfnoise

My KP periodically makes a clicking noise when changing aperture. This noise would not manifest on the above mentioned 55-300 PLM since that lens doesn't have a mechanical aperture lever.

In general the KP aperture motor appears to be somewhat noisy. There's a thread elsewhere in the forum IIRC about the startup sound it makes.

This?

KP aperture lever twitching on startup - PentaxForums.com

There's also this: https://www.pentaxforums.com/forums/203-pentax-kp/387517-lens-noise-kp.html

OP may have already seen these threads, though.

stevebrot · 09-13-2019, 08:36 AM

Originally posted by ZombieArmy

Seems like the camera is trying to wake the dead whenever I change the aperture in M mode on a normal autofocus lens. I notice it seems to actually stop the lens down for focusing as well?

Is this happening in live view? Which lens?

Steve

**UncleVanya** · 09-13-2019, 09:08 AM

I've never experienced that with my k3.

ZombieArmy · 09-13-2019, 09:31 AM

Originally posted by stevebrot

Is this happening in live view? Which lens?

Steve

Yah it's live view, lenses used are the tamron 90mm macro and the DA 40 xs.

ZombieArmy · 09-13-2019, 10:35 AM

I need to figure out what is causing this because it makes M mode basically unusuable. It makes it almost impossible to focus in liveview when stopped down.

Edit: I think it's live view trying to compensate for how bright it is, except that even when exposure is spot on it's royally screwing up. I don't know why this is only happening in M mode.

stevebrot · 09-13-2019, 10:56 AM

Originally posted by ZombieArmy

I need to figure out what is causing this because it makes M mode basically unusuable. It makes it almost impossible to focus in liveview when stopped down.

This is all very strange. The aperture actuator motor "homing" on startup is well-known as is mild protective stop-down in bright conditions (live view, all modes) with associated noises, but actual stop-down with change of aperture setting is something new. Is the lens actually stopping down or is the display just getting lighter/darker with change of set EV?* One can tell the difference by seeing if it does it with change of shutter speed as well as change of aperture.

Steve

* The exposure simulation feature in live view will lighten/darken the display in response to change in set EV.

ZombieArmy · 09-13-2019, 11:01 AM

Originally posted by stevebrot

Is the lens actually stopping down or is the display just getting lighter/darker with change of set EV?* One can tell the difference by seeing if it does it with change of shutter speed as well as change of aperture.

Lens is actually stopping down. Yah that was the first thing I had checked.

kevinWE · 09-13-2019, 11:01 AM

Mine was making loud noises when I would switch over to view files. Then the camera had an attack while using the onboard flash unit.I sent it back.

ZombieArmy · 09-13-2019, 11:03 AM

Originally posted by kevinWE

Mine was making loud noises when I would switch over to view files. Then the camera had an attack while using the onboard flash unit.I sent it back.

Mine doesn't seem hardware in nature, mine seems like software is screwing up. I need to make sure I have the latest firmware after my batteries are done charging.

stevebrot · 09-13-2019, 11:47 AM

Originally posted by ZombieArmy

Mine doesn't seem hardware in nature, mine seems like software is screwing up. I need to make sure I have the latest firmware after my batteries are done charging.

Something is definitely wrong. It is as if the DOF preview is engaged full time.

Steve

09-12-2019, 09:42 PM	#1
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210	KP ridiculously loud while changing aperture in M mode? Seems like the camera is trying to wake the dead whenever I change the aperture in M mode on a normal autofocus lens. I notice it seems to actually stop the lens down for focusing as well? Anyone else experience this? Tomorrow I'll try to get a sound recording of it, it's almost comical. Last edited by ZombieArmy; 09-12-2019 at 09:47 PM.

09-13-2019, 10:35 AM	#10
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	I need to figure out what is causing this because it makes M mode basically unusuable. It makes it almost impossible to focus in liveview when stopped down. Edit: I think it's live view trying to compensate for how bright it is, except that even when exposure is spot on it's royally screwing up. I don't know why this is only happening in M mode. Last edited by ZombieArmy; 09-13-2019 at 10:51 AM.

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09-13-2019, 03:13 AM	#2
hcc Pentaxian Join Date: Nov 2009 Location: Brisbane, Australia Photos: Gallery \| Albums Posts: 4,005	Only in M mode? With any lens, or only a few lens(s)? I have never experience this and would be interested to read the discussion.

09-13-2019, 03:17 AM	#3
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	Originally posted by hcc Only in M mode? With any lens, or only a few lens(s)? I have never experience this and would be interested to read the discussion. Only in M mode, and it does it with any lens that changes the aperture in camera.

09-13-2019, 05:26 AM	#4
rogerstg Loyal Site Supporter Join Date: Oct 2007 Location: Rhode Island Photos: Albums Posts: 1,168	Originally posted by ZombieArmy Anyone else experience this? I just checked with a 55-300 plm. M Mode, dialed changes of aperture; no noticeable sound.

09-13-2019, 06:44 AM	#5
selfnoise Senior Member Join Date: Apr 2008 Location: Westbrook, ME, USA Photos: Gallery Posts: 288	My KP periodically makes a clicking noise when changing aperture. This noise would not manifest on the above mentioned 55-300 PLM since that lens doesn't have a mechanical aperture lever. In general the KP aperture motor appears to be somewhat noisy. There's a thread elsewhere in the forum IIRC about the startup sound it makes.

09-13-2019, 07:57 AM	#6
luftfluss Site Supporter Join Date: Jun 2011 Location: NJ Photos: Gallery \| Albums Posts: 11,629	Originally posted by selfnoise My KP periodically makes a clicking noise when changing aperture. This noise would not manifest on the above mentioned 55-300 PLM since that lens doesn't have a mechanical aperture lever. In general the KP aperture motor appears to be somewhat noisy. There's a thread elsewhere in the forum IIRC about the startup sound it makes. This? KP aperture lever twitching on startup - PentaxForums.com There's also this: https://www.pentaxforums.com/forums/203-pentax-kp/387517-lens-noise-kp.html OP may have already seen these threads, though.

09-13-2019, 08:36 AM	#7
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by ZombieArmy Seems like the camera is trying to wake the dead whenever I change the aperture in M mode on a normal autofocus lens. I notice it seems to actually stop the lens down for focusing as well? Is this happening in live view? Which lens? Steve

09-13-2019, 09:08 AM	#8
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,472	I've never experienced that with my k3.

09-13-2019, 09:31 AM	#9
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	Originally posted by stevebrot Is this happening in live view? Which lens? Steve Yah it's live view, lenses used are the tamron 90mm macro and the DA 40 xs.

09-13-2019, 10:56 AM	#11
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by ZombieArmy I need to figure out what is causing this because it makes M mode basically unusuable. It makes it almost impossible to focus in liveview when stopped down. This is all very strange. The aperture actuator motor "homing" on startup is well-known as is mild protective stop-down in bright conditions (live view, all modes) with associated noises, but actual stop-down with change of aperture setting is something new. Is the lens actually stopping down or is the display just getting lighter/darker with change of set EV?* One can tell the difference by seeing if it does it with change of shutter speed as well as change of aperture. Steve * The exposure simulation feature in live view will lighten/darken the display in response to change in set EV.

09-13-2019, 11:01 AM	#12
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	Originally posted by stevebrot Is the lens actually stopping down or is the display just getting lighter/darker with change of set EV?* One can tell the difference by seeing if it does it with change of shutter speed as well as change of aperture. Lens is actually stopping down. Yah that was the first thing I had checked.

09-13-2019, 11:01 AM	#13
kevinWE Veteran Member Join Date: Aug 2017 Location: Illinois, USA Posts: 497	Mine was making loud noises when I would switch over to view files. Then the camera had an attack while using the onboard flash unit.I sent it back.

09-13-2019, 11:03 AM	#14
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	Originally posted by kevinWE Mine was making loud noises when I would switch over to view files. Then the camera had an attack while using the onboard flash unit.I sent it back. Mine doesn't seem hardware in nature, mine seems like software is screwing up. I need to make sure I have the latest firmware after my batteries are done charging.

09-13-2019, 11:47 AM	#15
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by ZombieArmy Mine doesn't seem hardware in nature, mine seems like software is screwing up. I need to make sure I have the latest firmware after my batteries are done charging. Something is definitely wrong. It is as if the DOF preview is engaged full time. Steve

KP ridiculously loud while changing aperture in M mode?

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