Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
10-06-2010, 05:40 AM   #1

Join Date: Jun 2010
Photos: Gallery | Albums
Posts: 190
Green button


i use a lot M mode, however in order to take some fast photos i some times press the Green button in order to get auto settings...

The thing i dont understand, is how the camera selects the automatic settings?
It changes both shutter and exposure? One of them?

I shot so many photos with Green button and i still dont know 100% how it derives the settings. It just selects the settings as if it was on AUTO MODE?


10-06-2010, 05:56 AM   #2
Fogel70's Avatar

Join Date: Sep 2009
Location: Stockholm, Sweden
Photos: Albums
Posts: 2,530
AFAIK on most Pentax DSLR you can choose if the camera should control both or only aperture or shutter speed when you press green button i manual mode (by default it changes both).
If camera change both it set the same exposure as it would in P-mode.
I usually have my cameras set so I select aperture and the camera set shutter speed.

Edit: There is also a "sticky" thread about this.

Last edited by Fogel70; 10-06-2010 at 06:17 AM.
10-06-2010, 09:29 AM   #3

Join Date: Jun 2010
Photos: Gallery | Albums
Posts: 190
Original Poster
ok thanks.

that's what i wanted; to select aperture and the camera to select shutter speed.
10-06-2010, 03:13 PM   #4
Site Supporter
Site Supporter
DAZ's Avatar

Join Date: Sep 2006
Location: Everett, WA USA
Photos: Gallery
Posts: 734
It will change both but will bias to what you have set in the program line. For example if the program line is set to MTF and you have a lens that gives the info to the camera it will try to set the lens aperture to what give the best MTF.


10-06-2010, 03:33 PM   #5
Inactive Account

Join Date: Mar 2009
Location: Coral Springs, FL
Photos: Gallery | Albums
Posts: 5,216
QuoteOriginally posted by fekish Quote
ok thanks.

that's what i wanted; to select aperture and the camera to select shutter speed.
That's how I shoot, but with old manual lenses where the Green button is the only way.

But if you're using a modern auto lens though, what's the point of the Green button? Just shoot in Av and it does the same thing.

  • 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!
auto, button, camera, dont, mode, pentax help, photography, photos, settings
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Green button - who really uses it? jpzk Troubleshooting and Beginner Help 45 01-07-2011 01:59 PM
SR and green button slow2focus Troubleshooting and Beginner Help 7 12-12-2009 11:56 AM
That Green Button - Useful! photog Pentax DSLR Discussion 0 07-03-2009 02:07 AM
Green Button res3567 Pentax DSLR Discussion 16 04-07-2009 11:41 PM
The green button desldan Pentax DSLR Discussion 5 12-23-2008 08:13 PM

All times are GMT -7. The time now is 10:24 PM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]