Tv mode question on K3

oldstoat · 07-08-2016, 11:57 AM

I set my K3 to Tv mode and move the wheel to set my shutter speed. I then press the shutter button halfway and the shutter speed changes. Why? it seems to drop to 1/125 sec no matter what i am pointing at

Adam · 07-08-2016, 12:04 PM

That shouldn't be happening. Are you shooting with a flash?

oldstoat · 07-08-2016, 12:15 PM

there is a af360fgz2 on the hotshoe but it is turned off. also just noticed on the top plate the speed is shown as I have set and stays like it as I half press the shutter, but in the viewfinder the speed drops

have taken the flash off the camera. still having same issue

stevebrot · 07-08-2016, 02:41 PM

Is Auto EV Compensation turned on by any chance?

Steve

oldstoat · 07-08-2016, 10:39 PM

Originally posted by stevebrot

Is Auto EV Compensation turned on by any chance?

Steve

Will check when I get home

mcgregni · 07-09-2016, 01:47 AM

Originally posted by stevebrot

Is Auto EV Compensation turned on by any chance?

Steve

Hmmm, yes, but in Tv mode wouldn't 'auto ev compensation' auto compensate with something other than shutter speed ... ? Unless the other parameters are at their limits already .. ?

stevebrot · 07-09-2016, 10:11 AM

Originally posted by mcgregni

Hmmm, yes, but in Tv mode wouldn't 'auto ev compensation' auto compensate with something other than shutter speed ... ? Unless the other parameters are at their limits already .. ?

I tried it before I posted. Yes, the other parameters (ISO and aperture) must be at their limits. The behavior is to shift to a longer exposure on half press. This feature has come up before on similar troubleshooting requests. I am not sure what the intended use might be, but I am very glad that the default is "off"!

Steve

oldstoat · 07-10-2016, 11:15 PM

checked and yes it was set to auto ev compensation. Thanks

stevebrot · 07-11-2016, 12:55 PM

Originally posted by oldstoat

checked and yes it was set to auto ev compensation. Thanks

Glad it got sorted out.

Steve

07-08-2016, 11:57 AM	#1
oldstoat New Member Join Date: Dec 2009 Posts: 20	Tv mode question on K3 I set my K3 to Tv mode and move the wheel to set my shutter speed. I then press the shutter button halfway and the shutter speed changes. Why? it seems to drop to 1/125 sec no matter what i am pointing at

07-08-2016, 12:04 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,594	That shouldn't be happening. Are you shooting with a flash? Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

07-08-2016, 12:15 PM	#3
oldstoat New Member Join Date: Dec 2009 Posts: 20 Original Poster	there is a af360fgz2 on the hotshoe but it is turned off. also just noticed on the top plate the speed is shown as I have set and stays like it as I half press the shutter, but in the viewfinder the speed drops have taken the flash off the camera. still having same issue Last edited by oldstoat; 07-08-2016 at 12:22 PM.

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07-08-2016, 02:41 PM	#4
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Is Auto EV Compensation turned on by any chance? Steve

07-08-2016, 10:39 PM	#5
oldstoat New Member Join Date: Dec 2009 Posts: 20 Original Poster	Originally posted by stevebrot Is Auto EV Compensation turned on by any chance? Steve Will check when I get home

07-09-2016, 01:47 AM	#6
mcgregni Veteran Member Join Date: Sep 2012 Location: Surrey, England Posts: 2,603	Originally posted by stevebrot Is Auto EV Compensation turned on by any chance? Steve Hmmm, yes, but in Tv mode wouldn't 'auto ev compensation' auto compensate with something other than shutter speed ... ? Unless the other parameters are at their limits already .. ?

07-09-2016, 10:11 AM	#7
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by mcgregni Hmmm, yes, but in Tv mode wouldn't 'auto ev compensation' auto compensate with something other than shutter speed ... ? Unless the other parameters are at their limits already .. ? I tried it before I posted. Yes, the other parameters (ISO and aperture) must be at their limits. The behavior is to shift to a longer exposure on half press. This feature has come up before on similar troubleshooting requests. I am not sure what the intended use might be, but I am very glad that the default is "off"! Steve

07-10-2016, 11:15 PM	#8
oldstoat New Member Join Date: Dec 2009 Posts: 20 Original Poster	checked and yes it was set to auto ev compensation. Thanks

07-11-2016, 12:55 PM	#9
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by oldstoat checked and yes it was set to auto ev compensation. Thanks Glad it got sorted out. Steve

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