Go Back   Steve's Digicams Forums > Digicam Help > What Camera Should I Buy?

Reply
 
Thread Tools Search this Thread
Old Sep 28, 2010, 5:34 PM   #11
Senior Member
 
shoturtle's Avatar
 
Join Date: Dec 2009
Location: Frankfurt AM
Posts: 11,348
Default

Okay,

I was chatting with Hard80, who figured it out. The liveview of the k-x meters off the sensor, and the ovf meters off a prism. So that accounts for the 1/3 difference.
__________________
Super Frequent Flyer, no joke. Ex Patriot and loving it.
Canon Eos 60D, T1i/500D, Eos1, Eos 630, Olympus EPL-1, and a part time Pentax K-X shooter.
shoturtle is offline   Reply With Quote
Old Sep 28, 2010, 5:44 PM   #12
Member
 
Join Date: Aug 2010
Posts: 70
Default

Quote:
Originally Posted by shoturtle View Post
The liveview seems to need a bit more light with the contrast base system, vs the ovf and the phase detect system.
Then wouldn't the LV picture be the darker one?

The Viewfinder shot is alway the darker of the two
Braciola is offline   Reply With Quote
Old Sep 28, 2010, 5:47 PM   #13
Senior Member
 
shoturtle's Avatar
 
Join Date: Dec 2009
Location: Frankfurt AM
Posts: 11,348
Default

no, liveview would be brighter, it will be closer to the available light. While the prism the with the ovf, will cause the camera to think it is a bit darker then it actually is. Which is pretty much what I have notice with the k-x in low light. Shooting at +1/3 EV resolves that issue.
__________________
Super Frequent Flyer, no joke. Ex Patriot and loving it.
Canon Eos 60D, T1i/500D, Eos1, Eos 630, Olympus EPL-1, and a part time Pentax K-X shooter.
shoturtle is offline   Reply With Quote
Old Sep 28, 2010, 5:50 PM   #14
Super Moderator
 
Hards80's Avatar
 
Join Date: Nov 2004
Location: Cleveland, OH
Posts: 9,046
Default

if you do not cover the viewfinder during the ovf shots, stray light can come in tricking the meter into thinking its getting more light than it is, thus choosing a shorter exposure and getting a darker image. insofar as i can surmise.
__________________
MyFlickr
Hards80 is offline   Reply With Quote
Old Sep 28, 2010, 5:53 PM   #15
Senior Member
 
shoturtle's Avatar
 
Join Date: Dec 2009
Location: Frankfurt AM
Posts: 11,348
Default

Hards, that makes allot of sense, if you consider that those shots are shooting down, and the light source is from the top
__________________
Super Frequent Flyer, no joke. Ex Patriot and loving it.
Canon Eos 60D, T1i/500D, Eos1, Eos 630, Olympus EPL-1, and a part time Pentax K-X shooter.
shoturtle is offline   Reply With Quote
Old Sep 28, 2010, 6:27 PM   #16
Senior Member
 
TCav's Avatar
 
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,572
Default

Good call! It never occurred to me that Braciola might not have had his eye to the OVF when taking the shot.

BTW, the difference between shutter speeds of 1/3 and 1/6 is 1 EV, not 1/3 EV.
__________________
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.
TCav is offline   Reply With Quote
Old Sep 28, 2010, 6:31 PM   #17
Senior Member
 
shoturtle's Avatar
 
Join Date: Dec 2009
Location: Frankfurt AM
Posts: 11,348
Default

it is less, but the camera will only compensate by 1/3 or 1/2
__________________
Super Frequent Flyer, no joke. Ex Patriot and loving it.
Canon Eos 60D, T1i/500D, Eos1, Eos 630, Olympus EPL-1, and a part time Pentax K-X shooter.
shoturtle is offline   Reply With Quote
Old Sep 28, 2010, 6:33 PM   #18
Member
 
Join Date: Jul 2010
Location: Clifton Forge, Va
Posts: 31
Default

You are correct !. I once owned a Minolta film SLR and shot a fair number of pictures at an outdoor wedding reception. The camera was on auto exposure and on a tripod - the sun behind me. As you can guess all the shots were under exposed because the sunlight through the viewfinder fooled the auto exposure sensor.. The shots taken off the tripod and the viewfinder at eve level were perfect --- only too few and too late. All of the best shots were ruined.
Ex-Clerk is offline   Reply With Quote
Old Sep 29, 2010, 12:39 AM   #19
Member
 
Join Date: Aug 2010
Posts: 70
Default

Thanks guys, but I get the same results in any lighting, and with me eye on or off the viewfinder.

I'll give more examples tomorrow when I can shoot outside.

My gut feeling is that there is something wrong.
The daylight photos I was taking in AV mode were all too dark until I switched over to LV, then they looked correct.
Braciola is offline   Reply With Quote
Old Sep 29, 2010, 12:42 AM   #20
Senior Member
 
shoturtle's Avatar
 
Join Date: Dec 2009
Location: Frankfurt AM
Posts: 11,348
Default

how much longer do you have in the exchange period? If it is short, I would just exchange it.
__________________
Super Frequent Flyer, no joke. Ex Patriot and loving it.
Canon Eos 60D, T1i/500D, Eos1, Eos 630, Olympus EPL-1, and a part time Pentax K-X shooter.

Last edited by shoturtle; Sep 29, 2010 at 1:12 PM.
shoturtle is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 12:52 AM.