Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-13-2011, 02:52 AM   #1
New Member




Join Date: May 2010
Posts: 5
Using Av mode on K-x

I think I have missed something somewhere! I mostly shoot in Auto Pict but when I shoot in Av images come out in mono. Probably staring me in the face but I can't see why. Any simple explanation will be appreciated. Thanks.

06-13-2011, 03:08 AM   #2
Pentaxian
aurele's Avatar

Join Date: Jan 2011
Location: Paris, France
Photos: Albums
Posts: 2,967
QuoteOriginally posted by oldphil Quote
I mostly shoot in Auto Pict but when I shoot in Av images come out in mono.
Can you explain what you mean by "come out in mono" ?
06-13-2011, 03:17 AM   #3
Veteran Member
Northern Soul's Avatar

Join Date: Feb 2008
Location: The North of England
Photos: Albums
Posts: 491
I guess he means the come out black and white - does the K-x remember specific picture settings for each mode?
06-13-2011, 03:42 AM   #4
Forum Member




Join Date: Apr 2011
Photos: Albums
Posts: 92
If black and white it sounds very much like the picture type in "custom image" has been switched to monochrome. In auto it always defaults to 'bright' but once you go into other semi manual modes you have a choice of settings. And these settings are remembered by default even when you power down.
So, turn your camera on in av mode, press info and enter "custom image" (First menu button in the top left of the display) you can then scroll left and right through a number of picture options including black and white. I personally like 'natural' on the Kx.

And whilst I'm here, what is the difference in control between Av and P mode ? Both let you adjust aperture size via the scroll wheel then the Kx alters iso and exposure accordingly to deliver a correctly exposed photograph. So as far as I can tell, and I'm no doubt wrong, they do the same thing .......

06-13-2011, 03:48 AM   #5
Veteran Member
Northern Soul's Avatar

Join Date: Feb 2008
Location: The North of England
Photos: Albums
Posts: 491
In AV mode you set the aperture and the camera changes shutter speed (and ISO) to get a 'correct' exposure.

In P mode the camera changes all three to get the correct exposure, with a bias toward whatever preset you have (sport, shallow DoF etc.)

It's a subtle difference because all three exposure variables rely on each other, but it's a difference nonetheless.

Taken me three years to get my head around TAv mode, mind you!
06-13-2011, 04:13 AM   #6
New Member




Join Date: May 2010
Posts: 5
Original Poster
Many thanks London Rob, spot on.
06-13-2011, 11:38 AM   #7
Pentaxian
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 4,858
QuoteOriginally posted by Northern Soul Quote
In AV mode you set the aperture and the camera changes shutter speed (and ISO) to get a 'correct' exposure.

In P mode the camera changes all three to get the correct exposure, with a bias toward whatever preset you have (sport, shallow DoF etc.)

It's a subtle difference because all three exposure variables rely on each other, but it's a difference nonetheless.

Taken me three years to get my head around TAv mode, mind you!
Splitting hairs, but:

With the K-x, there isn't any difference, because there's no option to alter the Program Line. With the upper level cameras like the K-5, K-7 etc., the different Program Line options will bias the settings that the camera uses. Newer cameras have more choices for the Program Line bias. The Program Line setting affects P and Sv modes directly, and TAv and M modes when the green button is pressed, but not Av mode.
06-17-2011, 09:04 AM   #8
New Member




Join Date: Jun 2011
Location: London
Posts: 6
Interesting - as new to DSLR (last slr experience 20+ years ago) I have spent ages trying to work out advantages of P mode on the Kx and assumed that (as usual) I was missing something. Still have problems with the green button...

06-17-2011, 09:59 AM   #9
Site Supporter
royden's Avatar

Join Date: Jun 2010
Location: Atlanta, Ga
Photos: Gallery
Posts: 281
QuoteOriginally posted by Just1MoreDave Quote
Splitting hairs, but:

With the K-x, there isn't any difference, because there's no option to alter the Program Line. With the upper level cameras like the K-5, K-7 etc., the different Program Line options will bias the settings that the camera uses. Newer cameras have more choices for the Program Line bias. The Program Line setting affects P and Sv modes directly, and TAv and M modes when the green button is pressed, but not Av mode.
Thank you Just1MoreDave. I have a K-x and had given up on understanding "Program Line". The manual should have been clearer on this issue. I mostly use Av and M, also the +/- button for manual lens not the green button as some have said on the forum. I guess the green button can be used with manual lens for certain cameras.
06-18-2011, 07:55 PM   #10
MSM
Veteran Member
MSM's Avatar

Join Date: Dec 2007
Location: Alabama
Photos: Gallery
Posts: 994
On the Kx it is easier to use the Av mode. What ever aperture you set is locked and only the shutter speed changes as the lighting changes. This is when you fix the ISO. If using the auto ISO then it too will change. In the program mode, however, the aperture will also vary in ways that I can't explain other than as the lighting reaches a certain amount the aperture starts to close down. This is a big distinction between the modes. I much prefer to set my aperture and not worry the camera is going to change it.
06-18-2011, 08:03 PM   #11
MSM
Veteran Member
MSM's Avatar

Join Date: Dec 2007
Location: Alabama
Photos: Gallery
Posts: 994
@tkossally the green button and the exp comp. button can be used on the Kx with manual k mount lenses. I set the green button to optical preview and let exp comp button set shutter speed to the aperture I selected.
06-19-2011, 05:55 AM   #12
Site Supporter
royden's Avatar

Join Date: Jun 2010
Location: Atlanta, Ga
Photos: Gallery
Posts: 281
QuoteOriginally posted by MSM Quote
@tkossally the green button and the exp comp. button can be used on the Kx with manual k mount lenses. I set the green button to optical preview and let exp comp button set shutter speed to the aperture I selected.
Thanks MSM,

I'm with you. When I got my first manual lens I used the green button as I was advised by the first post I stumbled on regarding using the M50/1.7. I later read another post to use the +/- button instead on a K-x. They both work(I think the shutter speed was always different but not by much) So like you, I use the green button for something else.
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!
av, av mode, camera, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
X-mode ...? Alizarine Troubleshooting and Beginner Help 4 05-12-2011 06:19 AM
K-5 uses mode SoulAsylum Pentax K-5 3 04-06-2011 10:29 AM
Sv mode - why? SpecialK Photographic Technique 7 03-16-2011 05:44 PM
Picture mode and Scene mode espanola Troubleshooting and Beginner Help 4 12-18-2009 08:59 AM
What is your shooting mode? RonMexico Pentax DSLR Discussion 46 07-02-2009 05:00 PM



All times are GMT -7. The time now is 04:00 PM. | 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