K-3 Uneven exposure on consecutive photos

dcpropilot · 03-04-2016, 06:11 PM

Have an odd problem. When taking consecutive photos, my K-3 seems to expose differently in the top half and then the bottom half of the frame. I am trying to figure out what's going on.....

Unregistered User 8 · 03-04-2016, 06:30 PM

Hi dcpropilot. Can you post the exif data from each shot.

**jatrax** · 03-04-2016, 06:35 PM - **1 Like**

Yep.. Kinda hard to say anything without the EXIF. And the Flicker page is restricted.

But to be honest I don't see any difference in those. What am I missing?

Unregistered User 8 · 03-04-2016, 06:39 PM

Originally posted by jatrax

But to be honest I don't see any difference in those. What am I missing?

On my computer, 2 and 4 seem to have less over-exposure of the light itself.

**jatrax** · 03-04-2016, 07:00 PM

Originally posted by pjv

On my computer, 2 and 4 seem to have less over-exposure of the light itself.

Not really seeing that on my monitor, but even so it cannot be much. Were these taken on a tripod? In that shot even a tiny bit of movement might force a different reading from the exposure meter. Depending on what metering mode is being used.

Unregistered User 8 · 03-04-2016, 07:04 PM

Originally posted by jatrax

Not really seeing that on my monitor, but even so it cannot be much. Were these taken on a tripod? In that shot even a tiny bit of movement might force a different reading from the exposure meter. Depending on what metering mode is being used.

Hi jatrax. I'm not the OP. I posted the waiting for EXIF post. Hope we get some information soon.

**jatrax** · 03-04-2016, 07:06 PM

Originally posted by pjv

Hi jatrax. I'm not the OP.

Ya, I know. I was just saying on my monitor I still see no difference even in the lights. Since you can I trust there is some difference but as you say without the EXIF, nothing to see.

dcpropilot · 03-04-2016, 07:18 PM

Thanks everyone! Here's some more photos...I made them public so the Flickr exif can be viewed. I think by using the wall, it's now more visible:

**jatrax** · 03-04-2016, 07:22 PM

Hand held or on tripod?

dcpropilot · 03-04-2016, 07:31 PM

Hand held. I had a heck of a time taking photos at my daughter's gymnastics meet today. It was like there was a flash angled going from one part of photo to the other. But it wasn't a flash, it was areas of very uneven exposure. I think the best way to see what I am trying to explain is to flip through the photos in flickr.

**jatrax** · 03-04-2016, 07:33 PM

What metering mode?

dcpropilot · 03-04-2016, 07:36 PM

Metering Mode - Multi-segment

stevebrot · 03-04-2016, 07:43 PM

Originally posted by jatrax

Yep.. Kinda hard to say anything without the EXIF. And the Flicker page is restricted.

But to be honest I don't see any difference in those. What am I missing?

What he said...both points.

If there is a difference, it is not evident on my monitor.

Is there any chance that the uneveness is a result of viewing angle?

Steve

stevebrot · 03-04-2016, 07:45 PM

Originally posted by dcpropilot

Thanks everyone! Here's some more photos...I made them public so the Flickr exif can be viewed. I think by using the wall, it's now more visible:

Compact fluorescents or LED? I suspect cyclic brightness variation (forget the technical term). Do you get the same results with longer exposures, say 1/30s?

Steve

stevebrot · 03-04-2016, 07:56 PM

Originally posted by stevebrot

Compact fluorescents or LED? I suspect cyclic brightness variation (forget the technical term). Do you get the same results with longer exposures, say 1/30s?

Steve

https://photographylife.com/light-frequency-issue

http://johnbdigital.com/lenses/fluorescent/fluorescent_lighting.php

Steve

03-04-2016, 06:11 PM	#1
dcpropilot Veteran Member Join Date: Mar 2010 Location: Vermont Photos: Gallery \| Albums Posts: 941	K-3 Uneven exposure on consecutive photos Have an odd problem. When taking consecutive photos, my K-3 seems to expose differently in the top half and then the bottom half of the frame. I am trying to figure out what's going on.....

03-04-2016, 07:18 PM	#8
dcpropilot Veteran Member Join Date: Mar 2010 Location: Vermont Photos: Gallery \| Albums Posts: 941 Original Poster	Thanks everyone! Here's some more photos...I made them public so the Flickr exif can be viewed. I think by using the wall, it's now more visible: Last edited by dcpropilot; 03-04-2016 at 07:24 PM.

03-04-2016, 07:45 PM	#14
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by dcpropilot Thanks everyone! Here's some more photos...I made them public so the Flickr exif can be viewed. I think by using the wall, it's now more visible: Compact fluorescents or LED? I suspect cyclic brightness variation (forget the technical term). Do you get the same results with longer exposures, say 1/30s? Steve Last edited by stevebrot; 03-04-2016 at 07:52 PM.

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03-04-2016, 06:30 PM	#2
Unregistered User 8 Closed Account Join Date: Mar 2015 Photos: Gallery Posts: 8,694	Hi dcpropilot. Can you post the exif data from each shot.

03-04-2016, 06:35 PM - 1 Like	#3
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Yep.. Kinda hard to say anything without the EXIF. And the Flicker page is restricted. But to be honest I don't see any difference in those. What am I missing?

03-04-2016, 06:39 PM	#4
Unregistered User 8 Closed Account Join Date: Mar 2015 Photos: Gallery Posts: 8,694	Originally posted by jatrax But to be honest I don't see any difference in those. What am I missing? On my computer, 2 and 4 seem to have less over-exposure of the light itself.

03-04-2016, 07:00 PM	#5
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Originally posted by pjv On my computer, 2 and 4 seem to have less over-exposure of the light itself. Not really seeing that on my monitor, but even so it cannot be much. Were these taken on a tripod? In that shot even a tiny bit of movement might force a different reading from the exposure meter. Depending on what metering mode is being used.

03-04-2016, 07:04 PM	#6
Unregistered User 8 Closed Account Join Date: Mar 2015 Photos: Gallery Posts: 8,694	Originally posted by jatrax Not really seeing that on my monitor, but even so it cannot be much. Were these taken on a tripod? In that shot even a tiny bit of movement might force a different reading from the exposure meter. Depending on what metering mode is being used. Hi jatrax. I'm not the OP. I posted the waiting for EXIF post. Hope we get some information soon.

03-04-2016, 07:06 PM	#7
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Originally posted by pjv Hi jatrax. I'm not the OP. Ya, I know. I was just saying on my monitor I still see no difference even in the lights. Since you can I trust there is some difference but as you say without the EXIF, nothing to see.

03-04-2016, 07:22 PM	#9
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Hand held or on tripod?

03-04-2016, 07:31 PM	#10
dcpropilot Veteran Member Join Date: Mar 2010 Location: Vermont Photos: Gallery \| Albums Posts: 941 Original Poster	Hand held. I had a heck of a time taking photos at my daughter's gymnastics meet today. It was like there was a flash angled going from one part of photo to the other. But it wasn't a flash, it was areas of very uneven exposure. I think the best way to see what I am trying to explain is to flip through the photos in flickr.

03-04-2016, 07:33 PM	#11
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	What metering mode?

03-04-2016, 07:36 PM	#12
dcpropilot Veteran Member Join Date: Mar 2010 Location: Vermont Photos: Gallery \| Albums Posts: 941 Original Poster	Metering Mode - Multi-segment

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03-04-2016, 07:43 PM	#13
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by jatrax Yep.. Kinda hard to say anything without the EXIF. And the Flicker page is restricted. But to be honest I don't see any difference in those. What am I missing? What he said...both points. If there is a difference, it is not evident on my monitor. Is there any chance that the uneveness is a result of viewing angle? Steve

03-04-2016, 07:56 PM	#15
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by stevebrot Compact fluorescents or LED? I suspect cyclic brightness variation (forget the technical term). Do you get the same results with longer exposures, say 1/30s? Steve https://photographylife.com/light-frequency-issue http://johnbdigital.com/lenses/fluorescent/fluorescent_lighting.php Steve