KP metering...

Geophotoguy · 05-19-2020, 06:44 AM

I have ordered a new Pentax KP. I have a Pentax K-70. The K-70 consistently overexposes when using the 77-segment metering modes. I currently use the center-weighted mode to overcome the overexposure problem. I tried underexposing by 1/3 stop but didn't like the results. Jpeg only...no raw.
Can anyone advise whether the KP suffers from a similar overexposure malade when using the 77-segment metering modes?
Research/reading didn't seem to answer my query...

cport · 05-19-2020, 07:55 AM

Do not be afraid of this. With K-5II and KP I usually took -0,5EV ...

kypfer · 05-19-2020, 08:12 AM

My K-70 gives me no problems ... neither does my KP. Are you sure you haven't got some exposure compensation dialed in with the camera set to remember the exposure compensation setting? Presumably the problem occurs with a variety of lenses and it's not just a sticky/sluggish aperture?

stevebrot · 05-19-2020, 08:55 AM

Originally posted by Geophotoguy

I tried underexposing by 1/3 stop but didn't like the results. Jpeg only...no raw.

If you can tell the difference of 1/3 stop and the overexposure is less than that, I suggest shooting in DNG or PEF and adjusting the curves in post.

Originally posted by Geophotoguy

Can anyone advise whether the KP suffers from a similar overexposure malade when using the 77-segment metering modes?

The KP does not have a 77-segment meter mode. It has a completely different metering system (shared with the K-3/K3-II and K-1) that uses an 87Kpx RGB sensor that allows for complex scene analysis. Whether that "overexposes" is hard to say. I have been satisfied with its performance on my K-3 and freely override (sometimes with hand-held meter) if needed. Again, shooting DNG or PEF might give the degree of control you desire.

Steve

**mikesbike** · 05-19-2020, 04:47 PM

I don't have the K-70. But my experience is, my K-5 IIs tends to underexpose slightly, about 1/3 stop, while my KP is right on. This of course is for ordinary scenes not likely to fool the meter. I don't necessarily keep my exposure comp active for the K-5 IIs, as it is close enough for most scenes, if conditions are bright or if using flash. The metering system of the KP is different from that of the K-70. I also have a K-S2, which seems to meter very well. I am speaking all JPEG images right out of the camera.

My KP is my all-time favorite for right out of the camera results. As with all, I set up "Fine Sharpening" in the Custom Image menus for "Bright", "Natural" and "Landscape" categories.

With prior models, my K-r metered very well, with a slight tendency towards overexposure. My K20D tends to underexpose by about 2/3 stop (maybe more), while my K200D tends to underexpose by about 1/2 stop (maybe more).

One other consideration- viewing with a backlit screen (the usual way these days) tends to over-brighten the image, especially the rear screen of the camera. And yes, the problem could be with the lens.

It would be helpful if you could post some examples, complete with exif.

thazooo · 05-19-2020, 05:27 PM

I always considered my KP to ETTR. I dial in -.5ev or drop it in post.

05-19-2020, 06:44 AM	#1
Geophotoguy New Member Join Date: May 2020 Posts: 10	KP metering... I have ordered a new Pentax KP. I have a Pentax K-70. The K-70 consistently overexposes when using the 77-segment metering modes. I currently use the center-weighted mode to overcome the overexposure problem. I tried underexposing by 1/3 stop but didn't like the results. Jpeg only...no raw. Can anyone advise whether the KP suffers from a similar overexposure malade when using the 77-segment metering modes? Research/reading didn't seem to answer my query...

05-19-2020, 07:55 AM	#2
cport Pentaxian Join Date: Jan 2013 Posts: 428	... Do not be afraid of this. With K-5II and KP I usually took -0,5EV ...

05-19-2020, 04:47 PM	#5
mikesbike Site Supporter Join Date: Dec 2016 Location: Southeastern Michigan Posts: 4,549	I don't have the K-70. But my experience is, my K-5 IIs tends to underexpose slightly, about 1/3 stop, while my KP is right on. This of course is for ordinary scenes not likely to fool the meter. I don't necessarily keep my exposure comp active for the K-5 IIs, as it is close enough for most scenes, if conditions are bright or if using flash. The metering system of the KP is different from that of the K-70. I also have a K-S2, which seems to meter very well. I am speaking all JPEG images right out of the camera. My KP is my all-time favorite for right out of the camera results. As with all, I set up "Fine Sharpening" in the Custom Image menus for "Bright", "Natural" and "Landscape" categories. With prior models, my K-r metered very well, with a slight tendency towards overexposure. My K20D tends to underexpose by about 2/3 stop (maybe more), while my K200D tends to underexpose by about 1/2 stop (maybe more). One other consideration- viewing with a backlit screen (the usual way these days) tends to over-brighten the image, especially the rear screen of the camera. And yes, the problem could be with the lens. It would be helpful if you could post some examples, complete with exif. Last edited by mikesbike; 05-21-2020 at 10:10 PM.

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05-19-2020, 08:12 AM	#3
kypfer Pentaxian Join Date: Jan 2018 Location: Jersey C.I. Posts: 3,592	My K-70 gives me no problems ... neither does my KP. Are you sure you haven't got some exposure compensation dialed in with the camera set to remember the exposure compensation setting? Presumably the problem occurs with a variety of lenses and it's not just a sticky/sluggish aperture?

05-19-2020, 08:55 AM	#4
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by Geophotoguy I tried underexposing by 1/3 stop but didn't like the results. Jpeg only...no raw. If you can tell the difference of 1/3 stop and the overexposure is less than that, I suggest shooting in DNG or PEF and adjusting the curves in post. Originally posted by Geophotoguy Can anyone advise whether the KP suffers from a similar overexposure malade when using the 77-segment metering modes? The KP does not have a 77-segment meter mode. It has a completely different metering system (shared with the K-3/K3-II and K-1) that uses an 87Kpx RGB sensor that allows for complex scene analysis. Whether that "overexposes" is hard to say. I have been satisfied with its performance on my K-3 and freely override (sometimes with hand-held meter) if needed. Again, shooting DNG or PEF might give the degree of control you desire. Steve

05-19-2020, 05:27 PM	#6
thazooo Pentaxian Join Date: Sep 2006 Location: Mississippi, USA Photos: Gallery Posts: 854	I always considered my KP to ETTR. I dial in -.5ev or drop it in post.