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hi000033 · 03-19-2014, 10:26 PM

when I turn to m mode, the screen shows Tav mode but not the m mode.
I can only use u1 mode to set it as m mode now. But it is troublesome that I have to set all the setting when I restarted my camera.

please help me how to fix it
thank a lot

Adam · 03-19-2014, 10:42 PM

Tav is basically m mode with auto iso. Disable auto iso and the display will show m

schnitzer79 · 03-20-2014, 02:58 AM

^ what adam said. happened to me some time ago and thought something was wrong with the camera

**felixkh** · 03-20-2014, 08:55 AM

Same with me. disable auto iso and all will be fine

ziscwg · 03-20-2014, 10:42 AM

OK,
So auto ISO in M is Tav. Instead of just looking like the camera is broken, the M and ISO auto range should flash. This perplexed me for a good 20 min as I tested things. I also reset to factory defaults.

This is just on of those small things they should fix in a firmware update.

stevebrot · 03-20-2014, 10:52 AM

Originally posted by ziscwg

This is just on of those small things they should fix in a firmware update.

Think of it as an undocumented feature. IMHO, auto-ISO is a thing of the devil and should be turned off by default. It causes more problems than it solves.

Steve

adwb · 03-21-2014, 12:16 AM

Auto iso is a thing of the devil?

I like that so what is green mode??

**crewl1** · 03-21-2014, 12:32 AM

Originally posted by stevebrot

IMHO, auto-ISO is a thing of the devil and should be turned off by default. It causes more problems than it solves.

IMO Auto ISO is a gift from Pentax heaven

(as long as you use a newer body and keep the ISO in a controlled range)

stevebrot · 03-21-2014, 08:09 AM

Originally posted by crewl1

IMO Auto ISO is a gift from Pentax heaven

(as long as you use a newer body and keep the ISO in a controlled range)

Granted, it is useful, but count the number of technical issue threads regarding this feature on the newer cameras and you may change your mind. Behavior is unpredictable in other than green or P modes.

Steve

**crewl1** · 03-21-2014, 09:52 AM - **1 Like**

I find it very helpful for kids sports and street shooting, where either the subjects or myself are moving and going from sunshine to shadow.
I want to control the aperture and shutter speed and the camera takes care of the overall exposure by varying the ISO.
With K-5 and K-3 my results are very good and the auto ISO lets me concentrate on focus and framing where a full manual setting would require more attention to exposure settings.

IchabodCrane · 03-21-2014, 04:07 PM

Originally posted by stevebrot

Think of it as an undocumented feature. IMHO, auto-ISO is a thing of the devil and should be turned off by default. It causes more problems than it solves.

Steve

I remember a thread where it was debated whether M mode should automatically fix the ISO, most likely to the last used value. Beyond the obvious solution for getting TAv mode when you want M mode, I can't remember the other pros and cons.

Sv mode is another option for those who don't like the ISO floating around.

stevebrot · 03-23-2014, 10:13 AM

Originally posted by crewl1

I want to control the aperture and shutter speed and the camera takes care of the overall exposure by varying the ISO.

I believe that is called TAv mode...auto-ISO when you want it and only when you want it.

Steve

ziscwg · 03-24-2014, 08:23 AM

Originally posted by IchabodCrane

I remember a thread where it was debated whether M mode should automatically fix the ISO, most likely to the last used value. Beyond the obvious solution for getting TAv mode when you want M mode, I can't remember the other pros and cons.

Sv mode is another option for those who don't like the ISO floating around.

To me M means everything manually set. What's the point otherwise? I like the Tav mode, but not for shooting indoor volleyball.

stevebrot · 03-24-2014, 12:36 PM

Originally posted by ziscwg

To me M means everything manually set.

What he said.

Steve

03-19-2014, 10:26 PM	#1
hi000033 New Member Join Date: Nov 2013 Posts: 2	K50 cannot turn to m mode when I turn to m mode, the screen shows Tav mode but not the m mode. I can only use u1 mode to set it as m mode now. But it is troublesome that I have to set all the setting when I restarted my camera. please help me how to fix it thank a lot

03-19-2014, 10:42 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,609	Tav is basically m mode with auto iso. Disable auto iso and the display will show m 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:

03-21-2014, 08:09 AM	#9
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by crewl1 IMO Auto ISO is a gift from Pentax heaven (as long as you use a newer body and keep the ISO in a controlled range) Granted, it is useful, but count the number of technical issue threads regarding this feature on the newer cameras and you may change your mind. Behavior is unpredictable in other than green or P modes. Steve Last edited by stevebrot; 03-23-2014 at 10:11 AM.

03-23-2014, 10:13 AM	#12
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by crewl1 I want to control the aperture and shutter speed and the camera takes care of the overall exposure by varying the ISO. I believe that is called TAv mode...auto-ISO when you want it and only when you want it. Steve Last edited by stevebrot; 03-23-2014 at 12:11 PM.

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03-20-2014, 02:58 AM	#3
schnitzer79 Pentaxian Join Date: Jul 2013 Photos: Albums Posts: 1,248	^ what adam said. happened to me some time ago and thought something was wrong with the camera

03-20-2014, 08:55 AM	#4
felixkh Site Supporter Join Date: Nov 2008 Location: Singapore Photos: Gallery Posts: 1,201	Same with me. disable auto iso and all will be fine

03-20-2014, 10:42 AM	#5
ziscwg Senior Member Join Date: Mar 2010 Posts: 110	OK, So auto ISO in M is Tav. Instead of just looking like the camera is broken, the M and ISO auto range should flash. This perplexed me for a good 20 min as I tested things. I also reset to factory defaults. This is just on of those small things they should fix in a firmware update.

03-20-2014, 10:52 AM	#6
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by ziscwg This is just on of those small things they should fix in a firmware update. Think of it as an undocumented feature. IMHO, auto-ISO is a thing of the devil and should be turned off by default. It causes more problems than it solves. Steve

03-21-2014, 12:16 AM	#7
adwb Veteran Member Join Date: Sep 2009 Location: Bristol UK Photos: Gallery Posts: 1,636	Auto iso is a thing of the devil? I like that so what is green mode??

03-21-2014, 12:32 AM	#8
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807	Originally posted by stevebrot IMHO, auto-ISO is a thing of the devil and should be turned off by default. It causes more problems than it solves. IMO Auto ISO is a gift from Pentax heaven (as long as you use a newer body and keep the ISO in a controlled range)

03-21-2014, 09:52 AM - 1 Like	#10
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807	I find it very helpful for kids sports and street shooting, where either the subjects or myself are moving and going from sunshine to shadow. I want to control the aperture and shutter speed and the camera takes care of the overall exposure by varying the ISO. With K-5 and K-3 my results are very good and the auto ISO lets me concentrate on focus and framing where a full manual setting would require more attention to exposure settings.

03-21-2014, 04:07 PM	#11
IchabodCrane Veteran Member Join Date: Sep 2012 Photos: Gallery \| Albums Posts: 1,728	Originally posted by stevebrot Think of it as an undocumented feature. IMHO, auto-ISO is a thing of the devil and should be turned off by default. It causes more problems than it solves. Steve I remember a thread where it was debated whether M mode should automatically fix the ISO, most likely to the last used value. Beyond the obvious solution for getting TAv mode when you want M mode, I can't remember the other pros and cons. Sv mode is another option for those who don't like the ISO floating around.

03-24-2014, 08:23 AM	#13
ziscwg Senior Member Join Date: Mar 2010 Posts: 110	Originally posted by IchabodCrane I remember a thread where it was debated whether M mode should automatically fix the ISO, most likely to the last used value. Beyond the obvious solution for getting TAv mode when you want M mode, I can't remember the other pros and cons. Sv mode is another option for those who don't like the ISO floating around. To me M means everything manually set. What's the point otherwise? I like the Tav mode, but not for shooting indoor volleyball.

03-24-2014, 12:36 PM	#14
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by ziscwg To me M means everything manually set. What he said. Steve

K50 cannot turn to m mode

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