double image

macd · 04-11-2020, 08:10 AM

Hi you all, I have a 645Z and once in a while I get an image that appears as if it was double exposed, very strange. I'm attaching a photo so you can see. Any ideas, suggestions, etc... This happens with any lens by the way. Thank you for the help in advance.

Attached Images

View Picture EXIF

Not a Number · 04-11-2020, 08:58 AM

Perhaps the Shake Reduction mechanism is failing?

photoptimist · 04-11-2020, 09:47 AM

Whoa! That'a really weird artifact.

It looks like the blue channel data is being misplaced relative to the green and red (= yellow) channels.

If this artifact is visible in the digital review image right after the shot, the problem is probably in the camera.

If this artifact is only visible after saving and recalling an image on the camera, then it might be a problem in your memory card.

If this artifact is only visible on your computer (not on the camera's display), then it might be a problem is in your software.

Exactly when and where does the image show with artifact?

macd · 04-11-2020, 11:56 AM

Thank you for the feedback and yes, this is visible in the digital review right after the shot. This has happened about two or three times and it's been when I've had live view on. Very strange and I don't know what could be causing this. I bought this camera used from the original owner, he took care of his stuff like mint and this camera has very few actuations, it's in mint condition. Anyway, regarding shake, it's mounted on a tripod so the shake has been turned off.

---------- Post added 04-11-20 at 11:58 AM ----------

FYI, I'm shooting simultaneously to two cards, both are fast and brand new, the image is on both cards.

stevebrot · 04-11-2020, 02:04 PM

Originally posted by macd

it's been when I've had live view on.

Electronic shutter?

Steve

**UncleVanya** · 04-11-2020, 10:14 PM

Originally posted by macd

Thank you for the feedback and yes, this is visible in the digital review right after the shot. This has happened about two or three times and it's been when I've had live view on. Very strange and I don't know what could be causing this. I bought this camera used from the original owner, he took care of his stuff like mint and this camera has very few actuations, it's in mint condition. Anyway, regarding shake, it's mounted on a tripod so the shake has been turned off.

Could the SR be malfunctioning even when disabled? What's the shutter speed?

macd · 04-12-2020, 01:00 PM

Flash set up with shutter at 125th at F11

stevebrot · 04-12-2020, 06:35 PM

Originally posted by UncleVanya

Could the SR be malfunctioning even when disabled? What's the shutter speed?

No in-body SR on 645Z. EXIF says shutter was 1/125s.

Steve

stevebrot · 04-12-2020, 07:07 PM

Originally posted by macd

Flash set up with shutter at 125th at F11

Could you describe your lighting setup? (Grasping at straws here...)

Steve

macd · 04-12-2020, 07:19 PM

Hi Stevebrot, simple setup, studio setup with one large Octobox with a Godox AD600. I have to use a cable release because I'm photographing animals so the camera is about six feed away, flash above. Shutter at 1/125s, f11 aperture and ISO 100. Shooting with two cards and camera is writing to both of them, both are Lexmarks 150s 64GB cards.

stevebrot · 04-12-2020, 08:38 PM

Originally posted by macd

Hi Stevebrot, simple setup, studio setup with one large Octobox with a Godox AD600. I have to use a cable release because I'm photographing animals so the camera is about six feed away, flash above. Shutter at 1/125s, f11 aperture and ISO 100. Shooting with two cards and camera is writing to both of them, both are Lexmarks 150s 64GB cards.

How is the AD600 triggered?

Steve

**UncleVanya** · 04-13-2020, 02:57 AM

Originally posted by stevebrot

No in-body SR on 645Z. EXIF says shutter was 1/125s.

Steve

I thought so but there was a post - now deleted - that seemed to suggest otherwise. Silly of me to not verify.

**UncleVanya** · 04-13-2020, 03:02 AM

Does this happen in natural light outdoors or is this limited to the correct lightning setup?

macd · 04-13-2020, 05:19 AM - **1 Like**

SteveBrot, it's remotely triggered by the Goddox remote. FYI, I'm responding to UngleVanya's post in a separate post but this has also happened in natural light so I don't think it's strobe specific.

---------- Post added 04-13-20 at 05:19 AM ----------

UncleVanya, yes this has happened in natural light as well so I don't think it's strobe specific.

stevebrot · 04-13-2020, 07:43 AM

Originally posted by macd

SteveBrot, it's remotely triggered by the Goddox remote. FYI, I'm responding to UngleVanya's post in a separate post but this has also happened in natural light so I don't think it's strobe specific.

---------- Post added 04-13-20 at 05:19 AM ----------

UncleVanya, yes this has happened in natural light as well so I don't think it's strobe specific.

Well...as noted in an earlier comment, there is an apparent displacement of the color channels in the camera's working memory. Since there are no obvious exposure time causes (e.g. camera motion wjth light-source phasing) and the same image was written to both cards, the culprit is likely an issue with internal processing. A service facility may be able to do a diagnostic to determine the module at fault.

Out of curiosity, is the red stripe across the top a feature of all the bad frames?

Steve

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04-11-2020, 08:58 AM	#2
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	Perhaps the Shake Reduction mechanism is failing?

04-11-2020, 09:47 AM	#3
photoptimist Pentaxian Join Date: Jul 2016 Photos: Albums Posts: 5,129	Whoa! That'a really weird artifact. It looks like the blue channel data is being misplaced relative to the green and red (= yellow) channels. If this artifact is visible in the digital review image right after the shot, the problem is probably in the camera. If this artifact is only visible after saving and recalling an image on the camera, then it might be a problem in your memory card. If this artifact is only visible on your computer (not on the camera's display), then it might be a problem is in your software. Exactly when and where does the image show with artifact?

04-11-2020, 11:56 AM	#4
macd Junior Member Join Date: Sep 2019 Location: Riverside, CA Posts: 27 Original Poster	Thank you for the feedback and yes, this is visible in the digital review right after the shot. This has happened about two or three times and it's been when I've had live view on. Very strange and I don't know what could be causing this. I bought this camera used from the original owner, he took care of his stuff like mint and this camera has very few actuations, it's in mint condition. Anyway, regarding shake, it's mounted on a tripod so the shake has been turned off. ---------- Post added 04-11-20 at 11:58 AM ---------- FYI, I'm shooting simultaneously to two cards, both are fast and brand new, the image is on both cards.

04-11-2020, 02:04 PM	#5
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by macd it's been when I've had live view on. Electronic shutter? Steve

04-11-2020, 10:14 PM	#6
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,472	Originally posted by macd Thank you for the feedback and yes, this is visible in the digital review right after the shot. This has happened about two or three times and it's been when I've had live view on. Very strange and I don't know what could be causing this. I bought this camera used from the original owner, he took care of his stuff like mint and this camera has very few actuations, it's in mint condition. Anyway, regarding shake, it's mounted on a tripod so the shake has been turned off. Could the SR be malfunctioning even when disabled? What's the shutter speed?

04-12-2020, 01:00 PM	#7
macd Junior Member Join Date: Sep 2019 Location: Riverside, CA Posts: 27 Original Poster	Flash set up with shutter at 125th at F11

04-12-2020, 06:35 PM	#8
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by UncleVanya Could the SR be malfunctioning even when disabled? What's the shutter speed? No in-body SR on 645Z. EXIF says shutter was 1/125s. Steve

04-12-2020, 07:07 PM	#9
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by macd Flash set up with shutter at 125th at F11 Could you describe your lighting setup? (Grasping at straws here...) Steve

04-12-2020, 07:19 PM	#10
macd Junior Member Join Date: Sep 2019 Location: Riverside, CA Posts: 27 Original Poster	Hi Stevebrot, simple setup, studio setup with one large Octobox with a Godox AD600. I have to use a cable release because I'm photographing animals so the camera is about six feed away, flash above. Shutter at 1/125s, f11 aperture and ISO 100. Shooting with two cards and camera is writing to both of them, both are Lexmarks 150s 64GB cards.

04-12-2020, 08:38 PM	#11
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by macd Hi Stevebrot, simple setup, studio setup with one large Octobox with a Godox AD600. I have to use a cable release because I'm photographing animals so the camera is about six feed away, flash above. Shutter at 1/125s, f11 aperture and ISO 100. Shooting with two cards and camera is writing to both of them, both are Lexmarks 150s 64GB cards. How is the AD600 triggered? Steve

04-13-2020, 02:57 AM	#12
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,472	Originally posted by stevebrot No in-body SR on 645Z. EXIF says shutter was 1/125s. Steve I thought so but there was a post - now deleted - that seemed to suggest otherwise. Silly of me to not verify.

04-13-2020, 03:02 AM	#13
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,472	Does this happen in natural light outdoors or is this limited to the correct lightning setup?

04-13-2020, 05:19 AM - 1 Like	#14
macd Junior Member Join Date: Sep 2019 Location: Riverside, CA Posts: 27 Original Poster	SteveBrot, it's remotely triggered by the Goddox remote. FYI, I'm responding to UngleVanya's post in a separate post but this has also happened in natural light so I don't think it's strobe specific. ---------- Post added 04-13-20 at 05:19 AM ---------- UncleVanya, yes this has happened in natural light as well so I don't think it's strobe specific.

04-13-2020, 07:43 AM	#15
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by macd SteveBrot, it's remotely triggered by the Goddox remote. FYI, I'm responding to UngleVanya's post in a separate post but this has also happened in natural light so I don't think it's strobe specific. ---------- Post added 04-13-20 at 05:19 AM ---------- UncleVanya, yes this has happened in natural light as well so I don't think it's strobe specific. Well...as noted in an earlier comment, there is an apparent displacement of the color channels in the camera's working memory. Since there are no obvious exposure time causes (e.g. camera motion wjth light-source phasing) and the same image was written to both cards, the culprit is likely an issue with internal processing. A service facility may be able to do a diagnostic to determine the module at fault. Out of curiosity, is the red stripe across the top a feature of all the bad frames? Steve