Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
10-17-2008, 10:28 AM   #1
Junior Member




Join Date: Sep 2008
Posts: 42
Metering issues?

I was talking to an avid Pentax user and he said he tested several K20d's and had consistent metering problems with each one. Has anyone noticed the metering system being off on this camera? Thanks.

10-17-2008, 10:38 AM   #2
Pentaxian
Moderator Emeritus




Join Date: May 2007
Location: Edmonton Alberta, Canada
Photos: Gallery | Albums
Posts: 10,648
Nope, I would say it's as good or better than my other 3 cameras. I'd like to know what he's doing and how he's "testing". I hear these hints of Pentax metering issues once in awhile and put them down to user error 98% of the time.
10-17-2008, 11:56 AM   #3
Veteran Member
rburgoss's Avatar

Join Date: May 2008
Location: San Jose, Costa Rica
Photos: Gallery | Albums
Posts: 972
In six months i'VE HAD MY k20d, there was only one instance that the camera refused to properly expose a flash picture (with AF540FGZ). And it was ONLY on one particular situation. Other pictures (also with the flash) shot same day were perfectly exposed.

RB
10-17-2008, 12:00 PM   #4
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
QuoteOriginally posted by mchud Quote
I was talking to an avid Pentax user and he said he tested several K20d's and had consistent metering problems with each one. Has anyone noticed the metering system being off on this camera? Thanks.
In some specific situations, the metering is all over the place, but generally I can pin it down to what i am doing operationally and adjust accordingly. Overall, the metering is pretty accurate.
The exceptions are manual metering with pre A series lenses, which can be problematic.

10-17-2008, 12:49 PM   #5
Veteran Member
soccerjoe5's Avatar

Join Date: May 2008
Location: Philippines
Photos: Gallery
Posts: 1,354
I don't understand how people say "this camera meters bad". Isn't metering all about "18% gray"?
10-17-2008, 01:02 PM   #6
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
QuoteOriginally posted by soccerjoe5 Quote
I don't understand how people say "this camera meters bad". Isn't metering all about "18% gray"?
The world isn't 18% gray.
10-20-2008, 06:08 AM   #7
Veteran Member
soccerjoe5's Avatar

Join Date: May 2008
Location: Philippines
Photos: Gallery
Posts: 1,354
QuoteOriginally posted by Wheatfield Quote
The world isn't 18% gray.
That is pretty obvious but I'm saying that all metering does is looking for 18% gray. So you have to learn how to use it and identify the times when overriding is necessary for attaining the exposure YOU want
10-20-2008, 09:43 AM   #8
Veteran Member




Join Date: Dec 2006
Location: Outside of Philly
Posts: 1,564
I've been down this discussion before. For any high contrast scenes, Pentax user complains "It's too dark" while Canonite moans "it blew the highlights"

Hint - For THAT scene, if Pentax ups the exposure, highlights will get blown, and if Canon bumps it down, the shadows will become more "shadowy....."

ALL cameras have their little quirks. I just got an Xsi as a backup to my 40D, and it seems to favor blowing highlights (compared to my 40D and my Pentax gear)....You just learn to understand how each camera reads various scenes and compensate (with "exposure compensation" )

10-20-2008, 05:20 PM   #9
Senior Member




Join Date: Jul 2007
Photos: Gallery
Posts: 124
What went wrong with this metering

I recently took some pictures with my K10 and kit lens. In the first photo I metered for the sky and in the second I just pointed straight and took the picture. It seems that if I am metering for the sky I am consistently getting underexposed shots? Why meter for the sky? I was trying out some tips from Understanding Exposure by Peterson and he mentions to meter for the sky as it gives best results. Any help would be appreciated. TIA
Attached Images
   
10-20-2008, 06:04 PM   #10
Ole
Administrator
Ole's Avatar

Join Date: Sep 2006
Location: Copenhagen, Denmark
Photos: Gallery | Albums
Posts: 3,881
Metering for the sky doesn't work in backlit situations like you have here. Most of the scene is in the shade and need a longer exposure than the sky.

When in doubt: Bracket and/or check the histogram and dial in some exposure compensation, then reshoot!
10-20-2008, 06:25 PM   #11
Site Supporter
SpecialK's Avatar

Join Date: Dec 2006
Location: So California
Photos: Gallery
Posts: 14,903
White clouds are not blue sky.

Meter clear blue sky pointed away from the sun. This will give the correct exposure for front-lit subjects.
10-20-2008, 06:45 PM   #12
Veteran Member
soccerjoe5's Avatar

Join Date: May 2008
Location: Philippines
Photos: Gallery
Posts: 1,354
weaponx525 > there are a lot of clouds in the sky you metered from and that's a lot of white stuff. in general, meters will darken the scene if there is a lot of white/bright stuff and the vice versa applies so if there are is a lot of black/dark stuff in the scene the meter will try to brighten the exposure.

this of course depends on what metering method you choose. if you choose matrix the camera will weigh out the whole scene and try to "average" it out, center-weighted will weigh out only the area nearer the center and same applies for spot metering. that "averaging out" is the so-called looking for 18% gray which is a "neutral" color.

each camera has its own characteristics though, because each one puts more/less weight in different areas of the area being measured/metered. for example, some cameras have different metering weight/sensitivity in the upper areas because they designed it to be the area for skies.

another example, my old nikon D80 would lean towards exposing for the dark areas more, and then people would always complain that "the D80 metering is bad, it overexposes". once i practiced and learned it, it didn't give me problems.

as for the K20D i find it to expose a little bit more to exposing/saving highlights. so in scenes where there is a lot of highlights it will try to save those highlights more than my D80.

after a bit of patience and practice, i learn to identify the situations where i need/want to use exposure compensation

hope that helps!

p.s. i always shoot center-weighted or spot
10-20-2008, 07:03 PM   #13
Senior Member




Join Date: Jul 2007
Photos: Gallery
Posts: 124
Thank you for the responses

All the responses are very much appreciated. I really hope that I am not flogging such an old topic. I will definitely try and experiment more with the K10 and metering different areas. I am a little disappointed I guess in the sense that Peterson states that "brother blue sky" will always be the most reliable spot to meter. In his pics even where there is a dusky, front lit or back lit sky, he recommends metering for the sky.

The reason that I am trying hard in learning metering is that I first and foremost do not have a lot of PP experience and would prefer to get it right the first time.

I have to say that for all the times that I did expose for a blue sky the main subjects that I do end up taking the actual picture of end up being on the underexposed end. If I EV compensate I run the potential of blowing out the sky.
10-21-2008, 12:06 AM   #14
Veteran Member




Join Date: Nov 2006
Location: Hong Kong
Posts: 1,934
Yes.

QuoteOriginally posted by mchud Quote
I was talking to an avid Pentax user and he said he tested several K20d's and had consistent metering problems with each one. Has anyone noticed the metering system being off on this camera? Thanks.
RiceHigh's Pentax Blog: K20D Exposure Inaccuracy and Inconsistency
10-21-2008, 12:16 AM   #15
Junior Member




Join Date: Jun 2008
Location: Los Angeles
Posts: 49
QuoteOriginally posted by weaponx525 Quote
I recently took some pictures with my K10 and kit lens. In the first photo I metered for the sky and in the second I just pointed straight and took the picture. It seems that if I am metering for the sky I am consistently getting underexposed shots? Why meter for the sky? I was trying out some tips from Understanding Exposure by Peterson and he mentions to meter for the sky as it gives best results. Any help would be appreciated. TIA
I have the same issues as you are with my K10. If still have to try what has been suggested here in this thread.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, dslr, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Metering on the K7 milesy Pentax DSLR Discussion 12 08-01-2010 07:22 PM
Metering in K-x realguard Pentax DSLR Discussion 5 08-01-2010 09:03 AM
K-X vs K-7 metering yusuf Pentax DSLR Discussion 1 08-01-2010 08:09 AM
Metering issues with MF lenses PentHassyKon Pentax SLR Lens Discussion 36 05-01-2009 04:16 PM
Me Super - Metering Issues unixrevolution Pentax Film SLR Discussion 20 04-23-2009 06:50 AM



All times are GMT -7. The time now is 09:18 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top